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Text File | 1990-02-08 | 145.0 KB | 3,840 lines

Thu Feb  8 13:43:44 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

    * Version 3.58.

Sat Feb  3 22:06:55 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

    * Version 3.57.7.

    * make.texinfo (Implicit: Catalogue of Rules): For RCS, noted that
    working files are never overwritten by the default rule.

Thu Feb  1 17:27:54 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

    * rule.c (count_implicit_rule_limits): Redid loop control to not run
    twice on freed rules.

    * GNUmakefile: Made `.dep' files be architecture-specific too.

    * main.c (main, log_working_directory) [USG]: Block children around
    calls to `getwd' (actually `getcwd' on USG), because that function
    sometimes spawns a child running /bin/pwd on USG.

Tue Jan 30 14:02:50 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

    * function.c (subst_expand): Pay attention to SUFFIX_ONLY, putz.

Wed Jan 24 21:03:29 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

    * make.man: Fixed repeated word.

    * make.texinfo (Missing): Reworded a buggy sentence.

Mon Jan 22 12:39:22 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

    * main.c (print_version): Added 1990 to copyright notice.

    * Version 3.57.6.

Sat Jan 20 11:52:01 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

    * file.c (rename_file): Don't free the storage for the old name, since
    it might not have been malloc'd.

    * job.c (construct_command_argv): Call
    allocated_variable_expand_for_file instead of variable_expand_for_file
    to expand `$(SHELL)'.

    * make.texinfo (Bugs): Change address from [e-mail]
    to [e-mail].

Tue Jan 16 19:22:33 1990  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * Version 3.57.5.

Sun Jan 14 16:48:01 1990  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

    * job.c (start_job): Only call wait_to_start_job for the first command
    line in each sequence.

Thu Jan  4 14:27:20 1990  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

    * load.c [LDAV_BASED] (wait_to_start_job): Loop while job_slots_used >
    0, not > 1.

    * job.c (search_path): Don't return a pointer to local storage.
    Allocate data space for the pathname instead.

    * function.c (expand_function: `shell'): Don't write garbage if the
    child wrote no output.

Wed Jan  3 15:28:30 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.57.4.

    * file.h (struct file): New member `renamed', a `struct file *' that is
    the place this file has been renamed to (or nil).
    (check_renamed): Macro to check for a file having been renamed.
    Dereferences the renaming and sets the given variable.
    * file.c (rename_file): Completely rewritten.  Renames in place if
    possible, or moves FILE to a different hash bucket if there is no
    existing file with the new name.  If there is an existing file with the
    new name, FILE is merged into it and FILE->renamed is set to point to
    it.
    * variable.c (merge_variable_sets): New fn to merge two variable sets.
    (merge_variable_set_lists): New fn to merge two variable set lists.
    * variable.h: Declare merge_variable_set_lists.
    * remake.c (update_file_1, check_dep): Run `check_renamed' after
    calling file_mtime, check_dep.
    (update_file): Same after update_file_1.
    (update_goal_chain, update_file_1, check_dep): Same after update_file.

    * read.c (uniquize_deps): New fn, broken out of record_files, to remove
    duplicate deps from a chain.
    (record_files): Use it.
    * implicit.c (pattern_search): Use uniquize_deps.

    * file.h (file_mtime_1): New macro, like file_mtime, but take second
    arg, passed to f_mtime.
    (file_mtime): Implement as file_mtime_1 (file, 1).
    (file_mtime_no_search): New macro: file_mtime (file, 0).
    * remake.c (f_mtime): Take new arg SEARCH.  Only do VPATH and `-lNAME'
    searching if it is nonzero.
    * main.c (main): Use file_mtime_no_search for makefiles.
    * remake.c (update_goal_chain): Use file_mtime_no_search if MAKEFILES.

    * main.c (printed_version): New variable, init'd to zero.
    (print_version): Set it to nonzero before returning.
    (die): If -v and !printed_version, call print_version before clean up
    and death.

    * main.c (log_working_directory): Keep track of whether or not the
    "Entering" message has been printed, and return without printing the
    "Leaving" message if not.

    * main.c (decode_switches): Don't complain about missing args before
    checking for a noarg_value elt in the command_switch structure.

Tue Jan  2 15:41:08 1990  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * make.texinfo (Commands: Recursion: Options/Recursion): Document
    special case of -j.

    * make.texinfo, main.c, job.c: Changed copyright notices to include
    1990.

    * make.texinfo (Top): Fixed introductory paragraph, which said that
    `make' itself (instead of the manual) has various chapters.
    (Variables: Advanced: Substitution Refs): When pxref'ing about
    `patsubst', use node `Text Functions', not `Functions'.
    Add an xref about `patsubst' after description of $(var:a%b=c%d).
    (Functions: Syntax of Functions): Explain why mixing delimiters in
    function/var refs is unwise.  Clarify fn arg evaluation order.
    (Options): Reworded sentence about `-e'.
    (Implicit: Implicit Variables): Don't say `RM' is unused.
    Say the dflt values for the flag vars is empty unless otherwise noted,
    since some have defaults.
    (Implicit: Pattern Rules: Pattern Examples): Clarified use of $< and $@
    in first example.
    (Implicit: Last Resort): Don't say the .DEFAULT example creates files
    "silently".  It's automatic, but not silent.
    (Implicit: Search Algorithm): Fixed confusing ungrammatical sentence
    for item 5.1.
    (Archives: Archive Update): Added missing `next' pointer.
    (Archives: Archive Symbols): Note that GNU `ar' deals with this
    automatically.

    * job.c (search_path): New fn, to search for an executable file in a
    search path (broken out of exec_command).
    (exec_command): Take fourth arg, the shell program to use (if
    necessary).  Use search_path for the program, and the shell program.
    Pass args "file args ..." to shell program (with no -c), where FILE is
    the full pathname of the program (script) to be run.
    (child_execute_job): Pass shell program to exec_command.
    * main.c (main): Ditto.

    * main.c (main): Don't write a message if exec_command returns, because
    it will never return.

Fri Dec 22 16:19:58 1989  Roland McGrath  (mcgrath at hecuba.Berkeley.EDU)

    * default.c (default_variables: "LINK.cc"): Use $(C++FLAGS) instead of
    $(CFLAGS).

Wed Dec 20 09:58:48 1989  Roland McGrath  (mcgrath at hecuba.Berkeley.EDU)

    * job.c (new_job): If start_job set the child's `command_state' to
    `cs_finished', call notice_finished_file.

Sun Dec 17 19:45:41 1989  Roland McGrath  (mcgrath at hecuba.Berkeley.EDU)

    * Version 3.57.3.

Wed Dec 13 17:57:12 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * rule.c (convert_to_pattern): Accept files with dependencies as
    suffix rules.

Thu Nov 30 15:47:13 1989  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

    * Version 3.57.2.

    * function.c (expand_function: `shell'): Don't clobber BUFFER and then
    try to free it.

    * remake.c (update_file_1): Took code to force remake of nonexistent
    deps out of #if 0, and changed the test to nonexistent non-intermediate
    deps.  In version 4, I think removing this test completely will
    implement the new feature that if a: b and b: c and c is newer than a,
    b need not be remade.

Sun Nov 26 16:12:41 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * compatMakefile (load.o, remote.o): Use $*.c instead of explicit file
    names so that using VPATH works.

Tue Nov 21 14:57:18 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.57.1.

Fri Nov 10 03:28:40 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * remake.c (check_dep): Set *MUST_MAKE_PTR if FILE does not exist after
    being updated.  (The exact opposite test was here before; why???)
    (update_file_1): Set a dep's `changed' member after updating it if it
    is phony and has commands (because they will then always be executed).

Thu Nov  9 13:47:12 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * load.c [UMAX]: #ifdef UMAX_43 include different headers for the
    `inq_stats' call.
    * compatMakefile (LOAD_AVG): Document UMAX_43.

    * Version 3.57.0.

    * commands.c (chop_commands): New function to chop commands into lines.
    * job.c (new_job): Break that code out, and call chop_commands.
    * remake.c (remake_file): Call chop_commands before looking at
    FILE->cmds->any_recurse.

    * make.texinfo (Running: Goals): Don't say that the default target
    won't be taken from an included makefile.

    * remake.c (update_file_1): #if 0 out setting MUST_MAKE if a dep
    doesn't exist.

Fri Nov  3 15:53:03 1989  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * Version 3.57.

    * variable.c (try_variable_definition): Don't calculate useless value.

    * main.c (define_makeflags): Fixed -j propagation.

    * commands.c (execute_file_commands): Removed unused variable.

Sun Oct 29 11:11:15 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * commands.c (execute_file_commands): If the commands are empty, call
    notice_finished_file before returning.

Sat Oct 28 23:06:32 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * remake.c (update_file_1): Don't always update a target that has no
    deps.  Only do this for double-colon targets.

Wed Oct 25 16:36:16 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * main.c (main) [hpux]: hpux == HPUX.
    * compatMakefile (defines): Document that HPUX should be defined.

Tue Oct 24 19:19:48 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.56.8.

    * job.c (exec_command): Fixed what mode bits are checked.

    * remake.c (update_file_1): "No cmds and no deps actually changed"
    loses if ! FILE->is_target.

    * make.texinfo (Variables: Setting): Don't say that spaces after a
    variable definition are ignored (since they aren't).

Mon Oct 23 14:34:23 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.56.7.

    * remake.c (update_file_1): If, after being updated, any dependency
    does not exist, remake the target.

    * remake.c (update_file_1): Always update if FILE has commands but no
    deps.

    * commands.c (execute_file_commands): If we return early because there
    are no commands, set FILE->updated.

Thu Oct 19 18:47:37 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * arscan.c (ar_scan) [M_XENIX]: Don't run atoi or atol on the
    `struct ar_hdr' members that are int or long int on Xenix.

Sat Oct 14 10:43:03 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * arscan.c (ar_scan): Cosmetic clean ups.
    (ar_name_equal): New function to compare names, handling truncated
    member names and special `.o' truncation.
    (ar_member_pos): Use ar_name_equal.
    * ar.c (ar_member_date_1): Use ar_name_equal.

    * Version 3.56.6.

    * file.h (struct file): Made `update_status' a `short int', and moved
    it before `command_state' so the bitfields can be packed better.

    * remake.c (files_remade): Made global.
    (notice_finished_file): Don't increment files_remade.
    * job.c (new_job): Do.

    * job.c (start_job): Don't return a value.  Always set
    CHILD->file->command_state to either cs_running or cs_finished.
    (new_job, child_handler): Don't expect start_job to return a value.
    Instead, look at the file's command_state.

    * commands.c (chop_commands): Merged into job.c (new_job).
    * commands.h: Don't declare chop_commands.

    * job.c (start_job): Made static.
    (new_job): New function to create a `struct child' and call start_job.
    (free_child): New function to free a `struct child'.
    (child_handler, new_job): Call it.
    * job.h: Don't declare start_job.  Do declare new_job.
    * commands.c (execute_file_commands): Call new_job.

    * commands.c (execute_file_commands): Don't set FILE->update_status if
    start_job fails.

    * function.c (expand_function): Don't use `reading_filename' and
    `reading_lineno_ptr' if they're nil.

Fri Oct 13 18:16:00 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * read.c (find_semicolon): New function to look for an unquoted ; not
    preceded by an unquoted # in a string.
    (read_makefile): Call it before expanding the line.  If it finds a ;,
    cut the line short there before expanding it.  If not, call it again
    after expanding.

    * commands.c (execute_file_commands): Don't check FILE->command_state.
    We won't get called unless it's cs_not_started.

    * read.c (read_makefile): Call collapse_line on the variable-expanded
    rule line after checking for ; and #.

    * job.c (start_job): When there are no more commands, always return 0.
    * commands.c (execute_file_commands): Don't put the new child in the
    `children' chain unless FILE->command_state is cs_running.

    * read.c (read_makefile): Rewrote ;-handling to only do it once (why
    did I do it twice??) and to check for a # before the ;.

    * job.c (start_job): Set CHILD->file->update_status to 0 when we run
    out of commands.  Set it to 1 before returning failure.
    (child_handler): Don't set C->file->update_status to 0 when start_job
    returns success and commands are not running.

    * read.c (read_makefile): If there is a # before the ; for commands,
    forget the ; and commands.

Thu Oct 12 15:48:16 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * job.c (child_execute_job): Pass -c to the shell.

Wed Oct 11 18:41:10 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.56.5.

    * main.c (define_makeflags): Cleaned up to keep better track of dashes
    written, etc.

    * function.c (expand_function: `shell'): When converting newlines to
    spaces in output, search with `index' calls rather than a simple loop.

    * main.c (main): Make sure stdout is line-buffered.

    * main.c (decode_switches): Always check for missing switch arg.

Mon Oct  9 17:17:23 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.56.4.

Sat Oct  7 00:32:25 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * commands.c (set_file_variables): #ifdef NO_ARCHIVES, still set $@ and
    $%.

    * commands.c (set_file_variables): Include a trailing slash in the
    directory variables (@D, etc.).

    * job.c (child_handler): Call notice_finished_file after changing a
    child's state to `cs_finished'.
    * remake.c (update_file_1): Don't call notice_finished_file if
    FILE->command_state == cs_finished.

Wed Oct  4 16:09:33 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.56.3.

Tue Oct  3 21:09:51 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * read.c (read_all_makefiles): When setting elements of MAKEFILES from
    the contents of read_makefiles, make sure we're using the right
    element.

    * dir.c, glob.c [USGr3 || DIRENT]: Don't define d_ino as d_fileno.

    * Version 3.56.2.

    * remake.c (update_file_1): Return zero after calling remake_file if
    FILE->command_state != cs_finished.  Test update_status thoroughly.

    * commands.c (execute_file_commands): Don't call notice_finished_file.

    * remake.c (remake_file): Return immediately after calling
    execute_file_commands.

Sat Sep 30 14:57:05 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.56.1 (alpha).

    * file.h (struct file): Made `update_status' not be a bitfield, since
    some broken compilers don't handle it right.

    * function.c (expand_function: `join'): Don't clobber the pointers and
    then try to free them.

    * job.c (exec_command): Fixed & vs = precedence problem.

Thu Sep 28 17:29:56 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * remake.c (update_file_1): Fixed typo in debugging output.

    * remake.c (library_file_mtime): Search for /usr/local/lib/libLIB.a
    after /usr/lib/libLIB.a.

Tue Sep 26 16:07:58 1989  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

    * read.c (conditional_line): For `ifeq (a, b)', swallow space after the
    comma.

Sun Sep 24 13:25:32 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * function.c (patsubst_function): If BY_WORD and the match is not a
    full word, update the text pointer correctly.

    * function.c (expand_function: `word'): Don't lose track of the second
    arg's expansion and free something else instead.

Fri Sep 22 16:15:29 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.56.

Thu Sep 21 14:28:42 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * main.c (main): Make an array of the mtimes of the makefiles before
    updating them, and compare their file_mtimes against this later.  Don't
    re-exec if a makefile was successfully updated but didn't change.  If a
    makefile failed to be remade and no longer exists, die.  If a makefile
    failed to be remade, but changed anyway, re-exec.  If a makefile failed
    to be remade, but is unchanged, continue on.

Wed Sep 20 18:02:07 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.55.6.

    * implicit.c (pattern_search): Maintain an array CHECK_LASTSLASH of the
    CHECK_LASTSLASH flag values used to match each member of TRYRULES.
    When making FILE->stem, if CHECKED_LASTSLASH[FOUNDRULE], prepend the
    part of FILENAME before LASTSLASH.

Tue Sep 19 17:44:08 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * dir.c (dir_file_exists_p): Check for FILENAME being nil before
    checking for it being "".

    * main.c (define_makeflags): Fixed test for whether a flag/flag_off
    option was non-default.  Also changed to generate a string that Unix
    Make will grok (except for FP/int values and new flags).

    * job.c (child_execute_job): Don't use the shell's -c option.
    Also fixed an off-by-one bug in the ARGV -> shell arg list copying.

Mon Sep 18 15:17:31 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.55.5.

    * read.c (parse_file_seq): Check the beginning of the file name for a
    `./', not the two chars after the end of the name (Q rather than P).

    * job.c (child_execute_job): Include all of ARGV in the arg list for
    the shell.

    * main.c (define_makeflags): Don't include floating and positive_int
    options in !PF.

    * job.c (exec_command): Set the effective gid to the real gid before
    execing.

    * job.c (child_execute_job): Don't clobber the arg list when execing
    the shell.

Sun Sep 17 15:27:19 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * main.c (define_makeflags): Moved all the checking inside the switch.

    * load.c [LDAV_BASED] (load_average): When we can't get the load
    average, return zero instead of running off the end.

    * file.c: Include variables.h.
    * job.c: Declare dup2 and {block,unblock}_remote_children.
    * file.h: Declare f_mtime.
    * job.c: Don't declare construct_command_argv, since job.h does.
    * function.c, main.c, load.c, remake.c: Include job.h.
    * load.c [LDAV_BASED] (load_average): Declare nlist.
    * variable.h: Declare print_file_variables.
    * job.c [!USG]: Don't declare sigsetmask.
    [!USG]: Declare getdtablesize.
    Don't declare load_average.  Do declare wait_to_start_job.
    Declare vfork, gete[gu]id, execve.
    * commands.c: Declare remote_kill, getpid.
    * make.h: Declare kill, exit, sigblock, pipe, close, ctime, open,
    lseek, read.
    * make.h [not USG]: Declare sigsetmask.
    * job.h: Declare wait_for_children and {block,unblock}_children.

    * dir.c (dir_file_exists_p): If FILENAME is nil, read in the whole
    directory.
    (find_directory): When we want to read in the whole directory, call
    dir_file_exists_p with nil instead of "".

    * file.h (struct file), job.h (struct child),
      variable.h (struct variable): Use bitfields for flags.
    * make.h (ENUM_BITFIELD): If GCC or #ifdef ENUM_BITFIELDS, define as
    :BITS, else empty.
    * compatMakefile (defines): Document ENUM_BITFIELDS.

Sat Sep 16 12:38:58 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.55.4 (alpha).

    * GNUmakefile (dist): Depend on default and doc.

    * load.c [LDAV_BASED]: Include <nlist.h> rather than <a.out.h>; #ifdef
    NLIST_NAME_UNION, use n_un.n_name instead of n_name.
    * compatMakefile (LOAD_AVG): Document NLIST_NAME_UNION.

    * job.c [USG-ish]: Don't redefine WIF{SIGNALED,EXITED} if they're
    already defined.

Fri Sep 15 13:59:42 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * glob.c, dir.c [USGr3 or DIRENT]: If neither d_ino, nor d_fileno is
    defined, define d_ino as d_fileno.

Thu Sep 14 18:29:38 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * job.c: Don't declare exec_command static.

    * make.texinfo (Name Index): Changed title to include directives.

    * Version 3.55.3 (alpha).

    * make.texinfo (Running: Options): Document -e.

    * main.c (main): Always give imported environment variables origin
    `o_env'.
    * variable.c (define_variable_in_set): Under -e, if ORIGIN, or an
    existing variable's origin, is `o_env', make it `o_env_override'.

    * load.c: Use the symbol KERNEL_FILE_NAME instead of KERNEL_FILE.
    * compatMakefile: Changed the comment for `LOAD_AVG' accordinly.

Thu Sep  7 16:46:26 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.55.2 (alpha).

    * variable.c (print_variable_set), rule.c (print_rule_data_base),
    file.c (print_file_data_base): If NO_FLOAT is defined, don't use
    floating-point for printing statistics.
    * compatMakefile (defines): Document NO_FLOAT.

    * make.h (HASH): New macro to add the hashing value of one char to a
    variable.c.
    * file.c (lookup_file, enter_file, rename_file): Use it.
    * dir.c (find_directory, dir_file_exists_p, file_impossible_p): Ditto.
    * variable.c (define_variable_in_set, lookup_variable): Same here.

    * variable.c, file.c, dir.c: Don't define *_BUCKETS if they are already
    defined.

    * compatMakefile (defines): Added comment about defining NO_ARCHIVES.
    (ARCHIVES, ARCHIVES_SRC): New variables for {ar,arscan}.[oc].
    (objs, srcs): Use $(ARCHIVES) and $(ARCHIVES_SRC).
    * commands.c (set_file_variables), dir.c (file_exists_p),
    remake.c (touch_file, name_mtime), implicit.c (try_implicit_rule,
    pattern_search), make.h: If NO_ARCHIVES is #defined, don't do any
    archive stuff.

    * commands.c (set_file_variables): Don't kill the last char of
    directory names in $([@*<%?^]D).

Wed Sep  6 15:23:11 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * default.c (default_terminal_rules {%:: %,v}, {%:: RCS/%,v}): Don't
    run co if the target exists.

    * glob.c (glob_match): [!xyz], rather than [^xyz], means none of [xyz].

    * glob.c: Misc minor cosmetic changes.

Tue Sep  5 14:49:56 1989  Roland McGrath  (mcgrath at saffron.Berkeley.EDU)

    * load.c [LDAV_BASED] (load_average): Check for == -1, rather than < 0
    to see if lseek fails.  On some systems, `avenrun' is at an offset >
    (2**31)-1, and lseek succeeds, returning a negative value.

Mon Sep  4 11:07:58 1989  Roland McGrath  (mcgrath at saffron.Berkeley.EDU)

    * rule.c (new_pattern_rule): Return `int' instead of `void': nonzero if
    the passed rule was used, zero if not.
    (install_pattern_rule): Pay attention to the return from
    new_pattern_rule, and don't set the rule's `terminal' flag or give it
    commands unless it's used.
    (create_pattern_rule): Same idea.

    * dir.c (find_directory): Removed unused variable.

    * commands.c (execute_file_commands): Removed unused variable.

    * read.c (record_files): Don't use NAME after freeing it.

Sat Sep  2 00:33:19 1989  Roland McGrath  (mcgrath at saffron.Berkeley.EDU)

    * Version 3.55.1 (alpha).

    * function.c (string_glob): Don't add spaces after file names that
    aren't added.  (Also means don't add spaces without checking the size
    of the buffer.)

    * remake.c (update_goal_chain): Don't remove makefiles with cmds and no
    deps from the chain.
    * main.c (main): Do it here, before calling update_goal_chain.

    * remake.c (update_goal_chain): When updating fails, change STATUS even
    if MAKEFILES is set.  Also stop remaking when updating fails if not
    under -k and MAKEFILES is not set.

    * remake.c (remake_file, update_file_1, notice_finished_file),
    commands.c (execute_file_commands), make.h, commands.h: The functions
    remake_file, notice_finished_file, and execute_file_commands no longer
    return values, and their callers no longer expect values returned.

    * remake.c (notice_finished_file): Don't set FILE's modtime to now if
    it is a non-target with no commands.

Fri Sep  1 00:04:39 1989  Roland McGrath  (mcgrath at saffron.Berkeley.EDU)

    * read.c (read_all_makefiles): After freeing each element on MAKEFILES,
    replace it with the name stored in read_makefiles by read_makefile.

    * remake.c (update_file_1): Don't decide not to remake if FILE has no
    cmds and no deps actually changed if FILE doesn't have any deps.

    * file.c (remove_intermediate): Remove precious files that also have
    the `dontcare' flag set.

    * remake.c (update_file_1): Don't always remake if FILE has cmds but no
    deps; only if FILE is double-colon.  (I don't know why this should be
    done for double-colon targets, but that's what Unix make does.)

    * load.c [LDAV_BASED] (load_average): Write error messages if the
    various system calls fail.  Keep track of if we've failed before.
    The first time we fail, write a message saying -l won't be enforced.
    The first time we succeed after having failed, write a message saying
    -l will be enforced again.

    * remake.c [USG]: Don't #include <sys/file.h>

    * load.c [generic Unix LDAV_BASED]: #include <fcntl.h> #ifdef USG,
    else <sys/file.h> instead.

    * job.c [USG && !USGr3 && !HAVE_DUP2]: Remove redundant
    #include <errno.h> and declaration of `errno'.
    [...] (dup2): Fixed so it won't always lose.

    * default.c (default_suffix_rules: .texinfo.dvi): Copy, rather than
    move, the aux and index files, so the TeX run can use them.

    * compatMakefile: Remove redundant comment.

    * load.c [generic Unix LDAV_BASED]: Include <a.out.h> instead of
    <nlist.h>, since the `struct nlist' declaration in <nlist.h> varies
    more than the one in <a.out.h>.
    (load_average): Use the `n_un.n_name' field of the `struct nlist',
    since the <a.out.h> declaration uses the union.

    * main.c (main): For the temporary files made for stdin makefiles, set
    the `intermediate' and `dontcare' flags.
    * file.c (remove_intermediates): Don't print any messages for files
    whose `dontcare' flag is set.  (The only files that will be
    intermediate and `dontcare' will be the temporary files made for stdin
    makefiles.)

    * job.c (exec_command): Made global.
    * job.h: Declare it.
    * main.c (main): Use exec_command when re-execing.

    * make.h: Declare environ.
    * make.c: Don't.

    * job.c (child_execute_job): New function to perform everything done in
    the child side of a fork (for a job or `shell' function).
    (start_job): Call it.
    * job.h: Declare construct_command_argv and child_execute_job.
    * function.c (expand_function: `shell'): Use child_execute_job.

Thu Aug 31 18:42:51 1989  Roland McGrath  (mcgrath at saffron.Berkeley.EDU)

    * function.c (expand_function: `shell'): Remove a trailing newline
    instead of turning it into a space.

    * main.c (main): Do init_siglist #ifdef HAVE_SIGLIST.

    * job.c [WTERMSIG || (USG && !HAVE_SYS_WAIT)]: Test each W* macro
    separately and define all those that aren't defined.

Sat Aug 26 15:13:21 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * ar.c (ar_name): Return zero for `(foo)'.

    * Version 3.55.

    * make.texinfo (Rules: Multiple Targets): Make this node's `next'
    pointer point to `Static Pattern'.
    * make.texinfo (Makefiles: MAKEFILES Variable): Make this node's `prev'
    pointer point to `Makefile Names'.

    * make.1: Renamed to make.man.
    * compatMakefile: Define `mandir' and `manext'.
    (install): Depend on $(mandir)/make.$(manext).
    ($(mandir)/make.$(manext)): Depend on make.man and copy it to $@.
    ($(bindir)/make): Use `make' rather than $<; so Unix make can grok it.

Thu Aug 24 03:35:48 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * variable.c (target_environment): Allow variables that start with
    underscores.

Wed Aug 23 22:50:32 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * variable.c (target_environment): Reject variables that don't start
    with letters.

Tue Aug 22 04:14:29 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * GNUmakefile (make-$(version).tar.Z): Put make.1 (the Unix manual
    page) in the tar file.

    * variable.c (target_environment): Don't write variables with origin
    o_default (i.e., ones from default.c).
    * make.texinfo (Commands: Recursion: Variables/Recursion): Document
    that default variables are not put in the environment.

    * remake.c (update_file_1): Remake all targets with commands but no
    deps.

Sat Aug 19 06:03:16 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * remake.c (update_file_1): In the final loop, set the deps'
    `changed' members if they are newer than FILE.

    * remake.c (update_goal_chain): Under -d, print a message if we decide
    not to remake a makefile so as to avoid a possible infinite loop.

Fri Aug 18 20:30:14 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * remake.c (remake_file): Cleaned up.

    * commands.c (execute_file_commands): If the commands are empty, set
    FILE->update_status to zero before returning.

    * remake.c (notice_finished_file): Set `last_mtime' fields to zero
    instead of calling name_mtime; file_mtime will do that later if anybody
    cares.

Thu Aug 17 10:01:11 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * make.texinfo (Rules: Wildcards: Wildcard Examples): Give this node a
    `prev' pointer.

    * Version 3.54.9 (alpha).

    * make.texinfo: Fixed some @nodes.

    * remake.c (check_dep): Don't set *MUST_MAKE_PTR if FILE doesn't exist
    after running update_file.

    * remake.c (notice_finished_file): If FILE has no commands, pretend its
    modtime is now.

    * remake.c (update_file_1): In the loops that call update_file on the
    deps, compare modtimes before and after (unless deps are still being
    made) and set the deps' `changed' members.  Do not set the `changed'
    members in the loop that prints the newer/older debugging messages.
    * remake.c (update_file_1): If no deps changed and FILE has no
    commands, decide it doesn't need remaking.

    * remake.c (update_file_1): Print a debugging message if we take
    commands from default_file.

    * make.texinfo (Rules: Directory Search: Selective Search): Removed
    note about warning for `vpath' with a constant pathname, since it isn't
    warned about anymore.

    * remake.c (update_goal_chain): If MAKEFILES, remove makefiles which
    are targets and have no deps.
    * make.texinfo (Makefiles: Remaking Makefiles): Document that makefiles
    will not be remade if they are targets but have no dependencies.

Tue Aug 15 00:00:08 1989  Roland McGrath  (roland at apple-gunkies.ai.mit.edu)

    * remake.c (notice_finished_file): Increment files_remade for non-phony
    files if they didn't exist before (even if they still don't).

    * job.c: Include <errno.h> and declare errno.

    * job.c (exec_command): If the execve fails with ENOEXEC (Exec format
    error), return instead of exiting the child process.

    * job.c (start_job): In the child side, if exec_command fails, try
    using the shell.

    * job.c (start_job): In the child side, call unblock_children instead
    of sigsetmask.

    * remake.c (notice_finished_file): Under -n or -q, always increment
    files_remade for non-phony files.

    * rule.c (intall_pattern_rule): Use find_percent.

    * vpath.c (vpath_search): Pass the `percent' members to
    pattern_matches.

Mon Aug 14 23:30:24 1989  Roland McGrath  (roland at apple-gunkies.ai.mit.edu)

    * vpath.c (struct vpath): New member `percent', to hold a pointer into
    the pattern where the % is.
    (construct_vpath_list): Call find_percent on the pattern and set the
    new `percent' member.
    * read.c (read_makefile): Don't run find_percent on `vpath' directive
    patterns.

    * function.c (pattern_matches): Take new arg PERCENT, a pointer into
    PATTERN where the % is.  If PERCENT is nil, copy PATTERN into local
    space and run find_percent on it.
    (expand_function: `filter', `filter-out'): Pass new arg to
    pattern_matches.
    * read.c (record_files): Pass PATTERN_PERCENT to pattern_matches for
    static pattern rules.  Save the percent pointer into implicit rule
    targets, and pass them to create_pattern_rule.
    * rule.c (convert_to_pattern): Pass new arg to create_pattern_rule.
    (create_pattern_rule): Take new arg TARGET_PERCENTS, nil or an array of
    pointers into the corresponding elements of TARGETS, where the %s are.

Sun Aug 13 00:29:19 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * Version 3.54.8.

    * README.templatate, README-doc.template: New files, turned into README
    and README-doc to go into the two distribution tar files.
    * GNUmakefile: Added a rule to edit the version number in
    README.template and README-doc.template, producing README and
    README-doc.

    * remake.c (update_goal_chain): If -n or -q is in effect for a
    makefile, and it got updated, don't change STATUS, so we can still
    return -1 (meaning nothing was done).  This avoids an infinite loop on
    "make -n Makefile".

Sat Aug 12 23:14:24 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * remake.c (notice_finished_file): Treat -q the same as -n.

    * remake.c (update_goal_chain): Fixed handling of return from
    update_file.  If -n or -q is in effect, ignore it.

    * job.c (start_job): Don't test for -t.  We should never get called in
    that case.

Fri Aug 11 04:09:14 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * function.c (expand_function): Removed unused variables.
    (handle_function): Removed unused variable.

    * main.c (main): Removed unused variable.

Wed Aug  9 09:37:10 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * Version 3.54.7.

    * remake.c (notice_finished_file): If FILE's modtime actually changed,
    increment files_remade.
    (remake_file): Don't increment files_remade.

    * remake.c (update_file): Don't print "up to date" messages for
    phony files.

    * job.c (child_handler): Don't set C->file->update_status to 1 if
    start_job returns nonzero under -n or -t.

    * expand.c (variable_expand): Count parens in $(foo:a=b) refs.

    * main.c: Removed old declaration of `glob_tilde' (which hasn't existed
    for a few months).

Tue Aug  8 23:53:43 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * job.c (exec_command): Fixed to not ignore the last path component and
    to do the right thing with an empty path.

Fri Aug  4 15:58:19 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * remake.c (library_file_mtime): Look for libLIB.a, not /libLIB.a.
    Do VPATH search on libLIB.a, not /usr/lib/libLIB.a

Thu Aug  3 20:42:00 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * job.c [HAVE_SYS_WAIT or not USG]: If WIFSIGNALED is not defined by
    <sys/wait.h>, define it as (WTERMSIG != 0).

Tue Aug  1 19:25:34 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * remake.c (remake_file): If FILE has no commands and is a target,
    don't set its time to now.  The time gets reset by notice_finished_file
    anyway, and it isn't needed since check_dep checks for nonexistence.

    * Version 3.54.6.

    * read.c (read_makefile): Don't read off the end of the string after an
    `include'.

    * job.c (exec_command): New function to search the path for a file and
    execute it.
    (start_job): Use exec_command rather than execvp.

    * read.c (read_makefile): Expand `include' directive args before
    parsing them.  Allow trailing whitespace after filename.

    * variable.c (target_environment): Put makelevel + 1, rather than
    makelevel, in the `MAKELEVEL' envariable.

Sat Jul 29 10:27:04 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * remake.c (notice_finished_file): Don't get the new modtime of phony
    files.

    * remake.c (remake_file): Run commands instead of touching under -t if
    FILE->cmds->any_recurse is set.

    * commands.h (struct commands): Add new member `any_recurse', to be set
    nonzero if any `lines_recurse' element is nonzero.
    * commands.c (chop_commands): Set the `any_recurse' member.

    * commands.c (execute_file_commands): Split chopping of commands into
    lines into new function chop_commands.
    * commands.h: Declare chop_commands.

    * read.c (read_makefile): Test for a line beginning with a tab after
    checking for conditional lines, but before all other checks.

Fri Jul 28 18:10:29 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * read.c (read_makefile): Match directives against collapsed line
    and use that for their args.

    * read.c (read_makefile): Warn about extra text after `include'.

Tue Jul 25 14:34:25 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * make.texinfo (Rules: Directory Search: Selective Search): Fixed
    example to use correct `vpath' syntax.

Mon Jul 24 12:10:58 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * Version 3.54.5.

    * job.c (start_job): In the child side, unblock SIGCHLD.

Fri Jul 21 18:25:59 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * make.h: Don't include <sys/types.h> #ifdef sun.

Mon Jul 17 14:29:10 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * implicit.c (pattern_search): If ar_name (FILENAME), don't check for
    directory names.

    * job.c (wait_for_children): Changed "waiting for children" message to
    "waiting for unfinished jobs".

Fri Jul 14 13:17:13 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * load.c (load_average): Use an unsigned offset into kmem.

Thu Jul 13 18:44:49 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * variable.c (pop_variable_scope): Don't free the head of the chain of
    variables in each bucket twice.

Tue Jul 11 06:45:24 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * GNUmakefile: Include COPYING in the doc tar file.

    * variable.c, read.c, misc.c, job.c, function.c: Replace some identical
    "for" loops with next_token or end_of_token calls.

Mon Jul 10 16:55:08 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * Version 3.54.4.

    * compatMakefile: Documented new conditionals.

    * job.c: Don't define sys_siglist if HAVE_SIGLIST is defined.
    Don't define dup2 if HAVE_DUP2 is defined.

    * job.c (child_handler): Interpret the return from start_job correctly.

    * remake.c (update_file_1): Don't write "target not remade because of
    errors" message under -n or -q.

    * read.c: Declare getpwnam.

    * glob.c: Use <dirent.h> if DIRENT is defined.
    [USG]: Don't declare memcpy, since <memory.h> does.

Fri Jul  7 20:53:13 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * misc.c (collapse_line): Copy the line over in the right place.

Fri Jul  7 18:33:24 1989  Roland McGrath    (fsf at void.ai.mit.edu)

    * remake.c: Conditionalize inclusion of <sys/file.h> on not
    USG, since HP-UX defines a `struct file' there.

Fri Jul  7 12:11:30 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * job.c: If WTERMSIG is defined by <sys/wait.h>, define WAIT_T as int,
    and don't define other macros; this covers HP-UX.
    If WTERMSIG is not defined, use int or union wait based on USG and
    HAVE_SYS_WAIT; this covers BSD and SysV.

    * Version 3.54.3 (alpha).

    * job.c [USG and not USGr3]: Include <errno.h> and declare errno.

    * job.c (unblock_children [USG]): Declare child_handler.

    * job.c: Renamed WRETCODE to WEXITSTATUS.
    [HAVE_SYS_WAIT or not USG]: Undefine WTERMSIG, WCOREDUMP, and
    WEXITSTATUS before defining them.  The HP-UX <sys/wait.h> defines them.

    * main.c (main): If there are no goals, fatal AFTER printing the data
    base under -p.

Thu Jul  6 22:43:33 1989  Roland McGrath  (roland at apple-gunkies.ai.mit.edu)

    * glob.c [USG]: #define rindex as strrchr.

    * job.c [USG]: Include <sys/param.h> and #define getdtablesize() as
    NOFILE.

Wed Jul  5 09:36:00 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * Version 3.54.2 (alpha).

    * expand.c (variable_expand): When expanding recursive variable
    references (${${a}}), use the correct delimiters in the constructed
    variable reference.

Mon Jul  3 18:29:26 1989  Roland McGrath  (roland at apple-gunkies.ai.mit.edu)

    * compatMakefile: Clear out and redefine the .SUFFIXES list because
    silly Sun 4 make defines .cps.h.

    * compatMakefile: Fix comment about -DNO_MINUS_C_MINUS_O.

    * remake.c: Include <sys/file.h> for O_* on 4.2.

    * commands.c: Define sigmask if it's not defined.

Fri Jun 30 07:33:08 1989  Roland McGrath  (roland at apple-gunkies.ai.mit.edu)

    * remake.c (remake_file): Don't always increment files_remade.

    * variable.c (push_new_variable_scope): Zero the new variable hash
    table.

Thu Jun 29 17:14:32 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * expand.c (variable_expand): When terminating the variable expansion
    buffer, use variable_buffer_output instead of a simply zero store,
    because the buffer may need to be enlarged.

Wed Jun 28 16:53:47 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * Version 3.54.

    * default.c (default_suffixes): Added `.ln'.
    (default_suffix_rules): Changed lint rules to use -C.

Thu Jun 22 20:49:35 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * job.c (start_job): Set `environ' to CHILD->environment before execing
    in the child process!

Tue Jun 20 17:23:13 1989  Roland McGrath  (roland at spiff.ai.mit.edu)

    * compatMakefile: Put job.h and rule.h in `srcs'.

    * Version 3.53.

Mon Jun 19 16:25:18 1989  Roland McGrath  (roland at spiff.ai.mit.edu)

    * job.c (start_job): If there are no more commands, return nonzero
    under -n or -t.

    * compatMakefile (make): Pass `-f' to mv.

    * GNUmakefile: If `ARCH' or `machine' is defined, make $(ARCH)/*.o and
    $(ARCH)/make instead of *.o and make.

    * function.c (string_glob): Don't try to use freed storage!

    * read.c (readline): If there is only one byte of space in the buffer,
    enlarge the buffer before reading more.

    * arscan.c [M_XENIX]: Miscellaneous minor changes for Xenix.

Sun Jun 18 13:07:45 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * GNUmakefile (depend): Split commands into two lines so they won't be
    so long when variable-expanded.

    * compatMakefile: Documented MINUS_C_MINUS_O meaning.  The line
    describing it got removed when the USG/wait stuff was documented.

Sat Jun 17 22:56:54 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

    * Version 3.52.

Mon Jun 12 17:45:11 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * remake.c (check_dep): Drop circular dependencies instead of fataling.
    (update_file_1 already does this.)

    * default.c (default_suffix_rules): For .s -> .o, put the -o flag to
    the assembler before the source file name.

Sun Jun 11 12:00:52 1989  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

    * Version 3.51.

    * make.texinfo (Features): Noted 1003.2 requirement of `+' meaning.

    * file.c (remove_intermediates): If !SIG, write a single "rm" command
    line, listing all files.

    * read.c (read_makefile): Don't free the storage for the passed
    filename, since it might not be malloc'd.  When doing an included
    makefile, free the name's storage.
    (read_all_makefiles): Use variable_expand to find the value of
    `MAKEFILES'.  Free the storage for the names of -f makefiles.
    (read_makefile): Allocate storage for the makefile name in the
    `struct file' in read_makefiles.

    * make.texinfo (Running: Instead of Execution): Document the affect of
    + and $(MAKE)/${MAKE}.

    * make.texinfo (Functions: Foreach Function): Document that if the
    iteration variable was undefined before the `foreach' call, it will be
    undefined after the call.

    * commands.c: Split into commands.c, job.h, and job.c.

    * rule.c (try_implicit_rule, pattern_search): Moved to new file
    implicit.c.

    * rule.c: Split into rule.h, rule.c, and default.c.
    * default.c (install_default_pattern_rules): Renamed to
    install_default_implicit_rules.
    * make.h, main.c (main): Renamed uses.

    * make.c: Renamed to misc.c.

    * make.c (main, log_working_directory, decode_switches,
    decode_env_switches, define_makeflags, die, print_version,
    print_data_base): Moved to new file main.c.

    * commands.c (execute_file_commands): Don't collapse backslash-newlines
    here.  When chopping the commands up into lines, don't chop at
    backslash-newlines.
    (start_job): Collapse backslash-newlines after printing the line.

    * commands.c (start_job): Don't collapse backslash-newlines here.
    (execute_file_commands): Collapse backslash-newlines before chopping
    the commands up into lines.

    * commands.c (set_file_variables): Initialize the length counters for
    $^ and $? to zero!

    * commands.c (start_job): Use vfork instead of fork.  Someone else says
    the child and parent DO have separate file descriptors.

    * variable.c: Split internals into variable.c, function expansion into
    function.c, and variable expansion into expand.c.
    * function.c (handle_function): New function to check for a function
    invocation and expand it.
    * expand.c (variable_expand): Use handle_function.
    * variable.c (push_new_variable_scope): New function to push a new
    empty variable set onto the current setlist.
    (pop_variable_scope): New function to pop the topmost set from the
    current setlist and free its storage.
    * function.c (expand_function: `foreach'): Push a new variable scope
    for the iteration variable and pop the scope when finished.
    * variable.h: Declare new functions.
    * variable.c (initialize_variable_output): New function to return a
    pointer to the beginning of the output buffer.
    (save_variable_output): New function to save the variable output state.
    (restore_variable_output): New function to restore it.
    * expand.c (variable_expand): Use initialize_variable_output.
    (allocated_variable_expand): Use {save,restore}_variable_output.
    * variable.c (current_setlist): Renamed to current_variable_set_list
    and made global.

Sat Jun 10 00:11:25 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * remake.c (library_file_mtime): Check for libNAME.a in the current
    directory before doing VPATH search.

    * variable.c (print_variable_set): Don't write "# Variables", and write
    fewer blank lines.
    (print_variable_data_base): Precede the variables with "# Variables".

    * make.c (main): Print the data base under -p after doing everything
    else, just before exitting.  This way it gets info determined in
    updating the goal targets.

    * variable.c (print_variable_data_base): Split into print_variable,
    which prints one variable, and print_variable_set, which prints a set.
    Replaced with a call to print_variable_set for the global set.
    (print_file_variables): New function to print a given file's local
    variables.

    * file.c (print_file_data_base): Call print_file_variables to print
    each file's local variables.

    * commands.c (set_file_variables): Actually define the values for
    the $^ and $? variables!!!

    * make.texinfo (Implicit: Pattern Rules: Automatic): Document new D and
    F versions of $^ and $?.

    * commands.c (start_job): In the child fork, use getdtablesize and a
    loop to close all file descriptors other than 0, 1, and 2.  We need to
    do this since not only the bad stdin pipe, but also some directories,
    may be open.

    * commands.c (start_job): Use fork instead of vfork, because a vfork
    parent and child share file descriptors, and our child needs to diddle
    with stdin.

    * variable.c (initialize_file_variables): When created a new variable
    set, zero out the hash table.

    * variable.c (target_environment): Don't use variables whose names are
    not made up of alphanumerics and underscores.

    * remake.c (update_file_1): Set the `parent' member of each dependency
    to FILE before updating it.

    * file.h (struct file): Add `parent' member.

    * variable.c (initialize_file_variables): Don't take second arg PARENT.
    Use FILE->parent instead.  If FILE->parent->variables is nil, recurse
    to initialize it.

    * variable.h: Declare {allocated_}variable_expand_for_file.

    * variable.c (allocated_variable_expand): Now
    allocated_variable_expand_for_file, calling variable_expand_for_file,
    and taking second arg FILE.
    (allocated_variable_expand): New function, a wrapper around
    allocated_variable_expand_for_file, passing a nil second arg.

Fri Jun  9 12:11:45 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * commands.c (start_job): On the child side of the fork, always close
    the bad stdin file descriptor.

    * commands.c (struct child): New member `environment', to hold the
    environment for the child.
    (execute_file_commands): Set the new childs `environment' member to nil
    before calling start_job.
    (start_job): Set up CHILD->environment before running the commands if
    it is nil.

    * make.c (main): Don't call new_environ.  `shell' functions will now be
    run with the environment make was called with.

    * commands.c (child_handler): Don't check C->command_ptr before calling
    start_job since we now have to check C->file->cmds->command_lines and
    it's easier to let start_job handle all that.

    * commands.c (struct child): New member `command_line', to hold an
    index into file->cmds->command_lines.
    (execute_file_commands): Set the new child's `command_line' to 0 and
    its `commands' and `commands_ptr' to nil.
    (start_job): When CHILD->command_ptr runs out, increment
    CHILD->command_line and run the corresponding line from
    CHILD->file->cmds->command_lines.  Run it even under -t, -q, or -n if
    the CHILD->file->cmds->lines_recurse element for that line is set.

    * commands.c (execute_file_commands): Chop CMDS up into lines, setting
    its `command_lines' and `lines_recurse' members, if it wasn't already
    chopped.

    * commands.h (struct commands): New members `command_lines' and
    `lines_recurse'.  The first is an array of chopped-up lines; the second
    is an array of flags, each nonzero if the corresponding line is
    recursive.

    * variable.c (variable_expand_for_file): If FILE is nil, just do a
    vanilla variable_expand.
    (expand_function: `shell'): Pass second arg (as nil) to
    construct_command_argv.

    * commands.c (construct_command_argv): Use variable_expand_for_file on
    `$(SHELL)' and `$(IFS)' instead of lookup_variable to check those
    variables.  This handles file-local and recursive values correctly.
    To support this, take an additional argument FILE.

    * variable.c (initialize_file_variables): New function to initialize
    FILE's variable set list from PARENT's setlist.  PARENT is the
    immediate dependent that caused FILE to be remade, or nil if FILE is a
    goal.  (When user-level per-file variables are implemented, PARENT
    should be passed as nil when defining per-file variables.)

    * variable.c (variable_expand_for_file): New function to expand a line
    using the variable set of a given file, and reporting error messages
    for the file and line number of that file's commands.

    * variable.h: Don't declare lookup_variable_for_file.

    * variable.c (lookup_variable_*): Turned back into lookup_variable.  It
    now uses current_setlist.
    (global_setlist): New static `struct variable_set_list', a setlist
    containing global_variable_set.
    (current_setlist): New static `struct variable_set_list *', a pointer
    to the current variable set list.
    (define_variable): Define in the current top-level set, not the global
    set.

    * commands.c (set_file_variables): New function to set up the automatic
    variables for a file in its own variable set.
    (execute_file_commands): Use set_file_variables.

    * variable.c (new_environ): Replaced with target_environment, taking an
    argument FILE, and returning an environment for FILE's commands.

    * variable.c, variable.h: Remove all global special variable pointers.

    * variable.c (define_variable_for_file): New function like
    define_variable, but takes additional arg FILE, and defines the
    variable in the variable set at the top of FILE's chain.
    (lookup_variable_for_file): New function like lookup_variable, but
    takes additional arg FILE, and looks the variable up in all of FILE's
    variable sets.

    * file.h (struct file): New member `variables', a `struct
    variable_set_list' containing the list of variable sets used in the
    expansion of the file's commands.

    * variable.c (variables): Replaced with static `struct variable_set'
    global_variable_set.
    (define_variable): Now define_variable_in_set, taking additional
    argument SET, the `struct variable_set' to define it in.
    (define_variable): Use define_variable_in_set with global_variable_set.
    (lookup_variable): Now lookup_variable_in_set, taking additional
    argument SET, the `struct variable_set' to look it up in.
    (lookup_variable): Use lookup_variable_in_set with global_variable_set.
    (lookup_variable_in_setlist): New function to look up a variable in a
    `struct variable_set_list' using lookup_variable_in_set.

    * variable.h (struct variable_set): New structure, containing a hash
    table and the number of hash buckets.
    (struct variable_set_list): New structure, containing a link for a
    linked-list, and a `struct variable_set'.

    * commands.c (start_job): Under -n, return what the recursive start_job
    call returns, since it might actually start a child.

    * make.texinfo (Rules: Wildcards): Document ~ and ~USER expansion.

    * commands.c (execute_file_commands): If start_job returns
    failure, but -t is set, set FILE->update_status to success.
    (start_job): If -t is set, and the commands are not recursive, return
    failure (is is done for -q).

    * remake.c (touch_file): New function to touch FILE.
    (remake_file): Use touch_file.  When touching a file, still do
    execute_file_commands.

    * remake.c (remake_file): Don't check question_flag (-q), since we
    can't know here if the commands are recursive.

    * commands.c (start_job): Don't use the `recursive' member of
    CHILD->file->cmds.  Instead, check for leading +s and $(MAKE) or
    ${MAKE} in the command line here.

    * commands.h (struct commands): Remove `recursive' member.

    * rule.c (install_default_pattern_rules): Remove use of `recursive'
    member.

    * read.c (record_files): Don't check commands from $(MAKE) and set
    their `recursive' member.

    * commands.c (fatal_error_signal): Treat SIGQUIT like SIGINT, SIGHUP,
    and SIGTERM, but don't send it to ourselves because it will cause a
    core dump.

Thu Jun  8 20:30:04 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.50.

    * variable.c (variable_expand): Use allocated_variable_expand instead
    of expand_argument in a few places.

    * variable.c (allocated_variable_expand): Do static variable shuffling
    here instead of using expand_argument.
    (expand_argument): Use allocated_variable_expand.

    * variable.c (recursively_expand): New function to recursively expand
    its argument (a `struct variable'), returning the malloc'd value.
    (variable_expand): Use recursively_expand.

Sun May 28 12:49:27 1989  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * make.c (main): Fixed buggy fix in deciding to increase space for
    command-line variable definitions.  (First it never did it, then it
    always did it; now it does it when necessary.)

Sat May 27 14:01:54 1989  Roland McGrath  (mcgrath at hecuba.Berkeley.EDU)

    * make.c (main): Fixed bug in deciding to increase space for
    command-line variable definitions.

Fri May 26 15:48:01 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * read.c (multi_glob): Use allocated_expand_variable for checking
    `HOME' variable for ~ expansion, since this may be called from inside a
    `wildcard' function expansion.

    * variable.h: Declare allocated_expand_variable.

    * variable.c (allocated_expand_variable): New function to do variable
    expansion in an allocated buffer, rather than the static one.

    * make.c (main): Don't set glob_tilde (it no longer exists).

    * variable.c (string_glob): Use multi_glob and parse_file_seq.

    * read.c (multi_glob): Do ~ expansion here.

    * glob.c (glob_tilde, glob_filename): Removed ~ expansion.

    * variable.c (define_variable, lookup_variable): Use a smarter hashing
    algorithm (the same one used for files and directories).
    (VARIABLE_BUCKETS): Increased to 523.

    * file.c (enter_file, lookup_file, rename_file): Use a smarter hashing
    algorithm, spreading the bits about somewhat.

    * make.c (log_working_directory): Under `-p', precede the directory
    message with a `#'.

    * make.c (print_version): Under `-p', precede each line with a `#'.
    (print_data_base): Precede the header line with a `#' and include the
    date and time on it.

    * vpath.c (print_vpath_data_base): Precede non-directive
    lines with `#'s.

    * commands.c (print_commands): Precede the non-command line with a `#'.

    * rule.c (print_rule_data_base), file.c (print_file_data_base): Precede
    non-rule lines with `#'s.

    * dir.c (print_dir_data_base): Precede all lines with `#'s.

    * variable.c (print_variable_data_base): Changed format so that it can
    be makefile input.  Lines that are not variable definitions are
    preceded with `#'.  Nonrecursive variable definitions are made with all
    dollar signs doubled to reproduce the initial value.  Recursive
    variable definitions containing newlines are done with `define'
    directives.  Nonrecursive variable definitions containing newlines, and
    variable names containing :, =, or newlines, will come out garbled.

Wed May 24 00:20:04 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.49.

Tue May 23 19:18:00 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * variable.c (expand_function: `filter'/`filter-out'): Use
    find_percent instead of pattern_p.

    * variable.c (expand_function: `patsubst'): Pass new args (both nil)
    to patsubst_expand.
    (variable_expand): For $(var:pat%=rep%) references, pass new args to
    patsubst_expand so as to avoid find_percent and thus disallow
    quoting the %s.

    * read.c (record_files): Pass new args to patsubst_expand.

    * variable.c (patsubst_expand): Take two new args: PATTERN_PERCENT
    and REPLACE_PERCENT.  Each of these, if non-nil, means that PATTERN
    (or REPLACE) has already been run through find_percent, and
    PATTERN_PERCENT (or REPLACE_PERCENT) is the result.

    * make.h: Declare find_percent instead of pattern_p.

    * read.c (pattern_p): Changed to find_percent, returning a pointer
    to the %, or nil if there is none.
    (record_files): Take another arg, PATTERN_PERCENT, a pointer to the
    % in PATTERN.
    (read_makefile): Pass PATTERN_PERCENT to record_files.

    * make.texinfo (Rules: Static Pattern: Static Usage,
    Rules: Directory Search: Selective Search,
    Functions: Text Functions): Documented that `%' can be quoted.

    * variable.c (expand_function: `filter'/`filter-out'): Use pattern_p
    to allow quoted %s in patterns.

    * variable.c (patsubst_expand): Use pattern_p on PATTERN and REPLACE
    to allow quoted %s.  Quoting backslashes are removed from REPLACE
    even if PATTERN contains no unquoted %.

    * read.c (pattern_p): Made global.
    * make.h: Declare pattern_p.

    * read.c (pattern_p): New function to search for an unquoted % in a
    string.  Backslashes quote %s and backslashes.  Quoting backslashes
    are removed from the string by compacting it into itself.  Returns
    nonzero if an unquoted % was found, zero if not.
    (record_files): Use pattern_p to check for implicit rules.
    (read_makefile): Use pattern_p to check for static pattern rules.
    Also use it to allow quoted %s in `vpath' patterns; warn about
    `vpath' patterns with no %s.

Mon May 22 16:31:52 1989  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * glob.c (glob_filename): Replace a `1' with the `l' that should
    have been there.  This incidentally stops it from dumping core.

    * glob.c (glob_filename): If the path is just a directory, with no
    file name pattern, return the directory alone.

    * glob.c (glob_tilde): New global variable (int), defaults to zero.
    (glob_filename): If glob_tilde is nonzero, expand ~ or ~USER.

    * variable.c (string_glob): Keep a static allocated buffer for file
    names taken from the list, instead of allocating and freeing one
    every time.

Fri May 19 18:06:26 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * make.c (decode_switches): Get floating numbers from the right string.

Sun May 14 13:48:04 1989  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

    * commands.c (delete_child_targets): When deleting `also_make'
    files, include the target's name in the message:
        make: *** [foo] Deleting file `bar'

Sat May 13 17:34:26 1989  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * make.c (max_load_average, default_load_average): Default to -1.

    * load.c (wait_to_start_job): Return if max_load_average is < 0.0,
    not equal.

Fri May 12 16:08:05 1989  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

    * variable.c (variable_buffer_output): Don't try to do pointer
    arithmetic between objects not in the same array.

Wed May 10 15:55:29 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * rule.c [M_XENIX] (default_suffix_rules, default_variables): Minor
    changes to allow for strange compiler syntax.

    * rule.c (default_variables): Don't include "> $@" in
    $(PREPROCESS.S), since it's already in the .S.s rule.

    * file.c (enter_file): Make a new double-colon file the `prev'
    member of the bottom `prev' file (the one whose `prev' is nil).

    * read.c (do_define): Append newlines after copying the lines into
    the value buffer, so we end up with a trailing newline.

    * make.c (print_version): If the global variable
    `remote_description' is not nil or "", append "-%s" (its value) to
    the version number.
    * remote-*.c: Define remote_description appropriately.

Sun May  7 15:15:53 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * commands.c (error_status): Converted to new function child_error,
    taking new arguments TARGET_NAME and IGNORED, and writing an error
    message: "*** [target] Error 1" (or signal #, etc.), appending
    " (ignored)" if IGNORED is nonzero.
    (child_handler): Use child_error instead of error_status.

    * compatMakefile (all): Don't depend on `doc'.

    * compatMakefile (clean): Don't remove make-info*.
    (realclean): New rule, depends on `clean', removes tags, TAGS,
    and all Info and TeX files.

Thu May  4 17:00:46 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * variable.c (print_variable_data_base), file.c
    (print_file_data_base), rule.c (print_rule_data_base),
    Use floating-point for averages and percentages.

    * make.c (print_data_base): Print messages before and after the data
    base information.

    * commands.c (print_commands): Changed output format to separate
    lines in commands and prefix them with tabs.

    * dir.c (print_dir_data_base): Changed output format slightly.

    * vpath.c (struct vpath, construct_vpath_list,
    selective_vpath_search): Remove the `exists' member and its uses.

    * vpath.c (print_vpath_data_base): New function to print all
    selective and general VPATH search paths (for -p).

    * make.c (print_data_base): Call print_vpath_data_base.

    * file.c (print_file_data_base): Changed format to look more like a
    makefile rule.  Now reports all information in the `struct file'.

    * rule.c (print_rule_data_base): Changed format of display from:
      %: (terminal)
       depends on: RCS/%,v
    to:
      %: RCS/%,v
        is terminal.
        references nonexistent subdirectory.
    Also include number and percent that refer to nonexistent
    subdirectories.

Thu Apr 27 15:45:40 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * make.c (main): Figure out the level of recursion before writing
    the `Entering directory' message.
    * variable.c (define_automatic_variables): Don't figure out the
    level of recursion from `MAKELEVEL'.  It's now done in main.

    * Version 3.48.

Wed Apr 26 16:39:17 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * commands.c (child_handler): Set `update_status' to zero when there
    are no more commands.

    * make.c (log_working_directory): If MAKELEVEL > 0, indicate the
    recurson in the message (make[1]: ...).

    * commands.c (child_handler): Change status to `cs_finished' when
    commands fail.

    * commands.c (start_job): Return 0 (success) if there were no more
    commands for the child.
    (child_handler): Change the status to `cs_finished' when start_job
    fails to start the commands.

    * make.c (main): Don't handle SIGEMT if it's not defined.
    Do handle SIGDANGER if it is defined.

    * commands.c (child_handler): Reorganized inner loop so that it
    doesn't try to inspect the child before finding it.

Tue Apr 25 16:28:24 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * make.c (end_of_token): Fixed bug wherein backslashes caused
    immediate return.

    * Version 3.47.

    * make.texinfo (Implicit: Pattern Rules: Automatic): Document
    setting of `$*' for explicit rules.  Add note clarifying that
    automatic variables, though referred to in the documentation as
    `$<', etc. are no different than `$(<)', etc.

Fri Apr 21 18:00:12 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * file.c (enter_file): Don't strip leading `./'s.

    * read.c (parse_file_seq): Strip leading `./'s.

Thu Apr 13 17:26:41 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * make.texinfo (Commands: Parallel, Running: Options): Document that
    -l with no argument removes a previous load limit.

    * make.c (struct command_switch): New member `default_value'.
    (default_job_slots): Default value (of 1) for -j.
    (default_load_average): Default value (of 0, unlimited) for -l.
    (command_switches): Use default values for -j and -l.
    Also, -l without an arg now means no load limit.
    (define_makeflags): Don't write positive_int or floating options
    whose values are their defaults.

    * make.c (main): Under -w, write a `Leaving directory' message
    before re-execing.

Tue Apr 11 16:46:29 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.46.

    * Makefile: Provide an easy place for system-specific definitions
    (-DUSG, etc.) and extra object files (for whatever).

    * make.texinfo: Miscellaneous fixes from RMS.

Mon Apr 10 19:31:34 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * rule.c (pattern_search): Put rules with `subdir' flags set in
    TRYRULES, since these might be valid with VPATHs.  In the TRYRULES
    loop, don't do lookup_file or file_exists_p calls for dependencies
    of rules with `subdir' flags set, but still do vpath_search calls
    and intermediate-file searches.

Thu Apr  6 16:33:00 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * make.texinfo (Implicit: Pattern Rules: Automatic): Document the
    new definition of $* for explicit rules.

    * commands.c (execute_file_commands): If FILE->stem is nil, figure
    out if FILE->name ends in a suffix in the .SUFFIXES list; if so,
    store the name sans suffix in FILE->stem (and $*).

Wed Apr  5 15:24:48 1989  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

    * file.c (remove_intermediates): Don't use `file_exists_p' to check
    for the existence of intermediate files, because the hashed
    directories will probably be out of date.

    * commands.c (child_handler): Free the good stdin before running the
    next command line.

    * commands.c [USG] (init_siglist): Don't case SIGEMT if it's not
    defined.  Do case SIGDANGER (for IBM RT) if it is defined.

    * commands.c: Changed `SYS_WAIT' to `HAVE_SYS_WAIT'.
    (child_handler): Use `wait3' if HAVE_SYS_WAIT is #defined.

    * file.c (enter_file): If any `./'s are stripped off, allocate a new
    copy of the shortened name.

    * rule.c (pattern_search): Allocate the right length strings for
    `also_make' members.

Sat Apr  1 13:28:38 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.45.

    * GNUmakefile: Make a separate tarfile of the DVI and info files.

    * make.c (define_makeflags): If a switch that takes an argument has
    its default value, put the switch in MAKEFLAGS with no arguments.

    * make.c (command_switches): Pass `-l' in MAKEFLAGS.

Wed Mar 29 17:50:05 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * GNUmakefile: Don't include the DVI and info files in the dist.

    * commands.c (child_handler): Don't call
    check_changed_{directories,vpaths}.

    * make.h: Don't declare check_changed_{directories,vpaths}.

    * vpath.c (check_changed_vpaths): Removed this function.

    * dir.c (struct directory): Remove `modtime' member.
    (find_directory): Don't set `modtime' member.
    (check_changed_directories): Removed this function.

    * remake.c (update_file_1): Set FILE->command_state to cs_finished
    if it didn't need to be remade.

    * remake.c (update_file): Only write the "up to date" message if the
    target when from `not_started' state to `finished' state without
    incrementing the count of files remade.

    * commands.c [USG] (init_siglist): If both SIGCHLD and SIGCLD are
    defined, don't put them both in the `switch'.

Tue Mar 28 15:37:02 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * file.c (rename_file): Change FILE's name!!!

    * rule.c (create_pattern_rule): Set the `terminal' member of the new
    rule after calling new_pattern_rule, which zeros it.

    * rule.c (default_variables): Use $(C++) in $(COMPILE.cc)!

Sun Mar 26 15:52:30 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Makefile: Added a `clean' target.

Fri Mar 24 15:08:46 1989  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

    * Version 3.44.

    * file.c (rename_file): If a `struct file' for the renamed-to name
    exists, and it is a target or has deps or commands, barf.
    If not just remove the old one for put in the new one.

    * remake.c (update_file_1, check_dep): Changed it back so that equal
    modtimes to NOT make dependencies be considered newer.  RCS checks
    out files with equal modtimes as the RCS files, so this screws it.

    * make.h, glob.c: If __GNUC__ is defined, use __builtin_alloca.

    * Makefile: Use variables `ALLOCA' and `ALLOCASRC' so systems
    without a good standard alloca can get it from the Emacs
    distribution (or somewhere).

    * dir.c: Don't include <sys/stat.h>, since make.h does.

    * make.c: Removed debugging version of getwd.

Thu Mar 23 16:16:27 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.43.

    * remake.c (update_file_1): If a dependency loop is found, don't
    fatal.  Emit an error message and remove the dependency.

    * remake.c (library_file_mtime): Fixed to use the right names.
    (update_file_1, check_dep): Consider a dependency "newer" than its
    dependent if they have the same modification time.

Wed Mar 22 19:31:35 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * file.c (remove_intermediates): Don't try to remove nonexistent files.

Mon Mar 20 10:21:22 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.42.

    * rule.c (default_variables): Set F77 to $(FC) and F77FLAGS to
    $(FFLAGS) so explicit rules expecting these (which are in System V)
    will work.  However, there is no way to make setting these affect
    the implicit rules, unless we trash FC and FFLAGS (which BSD uses).
    [USG]: Set GET to `get' rather than `/usr/sccs/get'.

Sun Mar 19 20:00:27 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * vpath.c (construct_vpath_list): Don't replace VPATH[ELEM] with
    dir_name (V), because the latter may get freed.

Sat Mar 18 15:01:39 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.41.

    * make.texinfo: Cleaned-up edition 0.1 Beta from RMS and Bob Chassell.

    * file.c (rename_file): If a file with the new name already existed,
    use the same storage space, after freeing the old file's name, deps,
    and `also_make' member, preserving the link in the chain.
    Also write an error message telling the user to report the incident;
    I don't think this should be able to happen, but I'm not sure.

    * file.c (rename_file): Don't add the hash values of the old and new
    names together!  Reset HASHVAL before computing the second value.

    * dir.c (check_changed_directories): Zero the new file hash table
    after allocating it.

    * dir.c (dir_file_exists_p): If FILENAME is "", return 1 if the
    directory exists.

    * vpath.c (check_changed_vpaths): New function to run through the
    search paths of all VPATHs, making the `exists' members correspond
    to reality.

    * commands.c (child_handler): Call check_changed_vpaths.

    * make.h: Declare check_changed_vpaths.

    * vpath.c (struct vpath): New element `exists', an array of char
    flags; exists[N] is nonzero if searchpath[N] exists.
    (construct_vpath_list): Set the `exists' member.
    (selective_vpath_search): Don't search directories whose `exists'
    elements are zero.

    * read.c (read_makefile): Set the `dontcare' flag of makefiles
    from the MAKEFILES variable if they were not mentioned anywhere but
    in the MAKEFILES variable.

    * read.c (read_makefile): Don't write an error message if fopen
    fails for a makefile from the MAKEFILES variable.

    * dir.c (struct directory): Add `modtime' member to record the
    modification time of the directory when it was opened.
    (check_changed_directories): New function to check all known
    directories; if their modtimes have changed since they were opened,
    their file tables are cleared and they are reset to be read in.

    * commands.c (child_handler): Call check_changed_directories before
    returning.
    make.h: Declare check_changed_directories.

Tue Mar 14 20:07:13 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.40.

    * make.c (print_version): Made the copyright say 1988, 1989.

    * read.c (read_all_makefiles): Don't set *MAKEFILES to the name of
    the end of the read_makefiles chain, since the latter may be from an
    included makefile.  (Why did I do this before?)

    * make.c (main): Set argv[0] to "" if it was nil.  Don't put the
    command-line variable definitions into argv[0], only into the MAKE
    variable!

Sun Mar  5 20:44:08 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * ar.c (ar_member_date, ar_touch): Remove the trailing ) from the
    member name.

Fri Mar  3 18:15:15 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * commands.c (construct_command_argv): Initialize NEW_ARGV to 0.  At
    `slow' label, if NEW_ARGV is not 0, free it; then allocate 4 strings.

Tue Feb 28 14:29:39 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.39.

    * COPYING, make.texinfo: New GNU General Public License, version 1.

    * *.c, *.h, Makefile: New copyright notices for the new GNU General
    Public License, version 1.

    * commands.c [USG]: Define WRETCODE correctly (again).

    * variable.c (expand_function: `shell'): Don't capture the standard
    error output of the shell command.

    * ar.c (ar_touch, ar_member_date): Allocate MEMNAME with the right
    length.

    * load.c [not UMAX] (load_average): Don't clobber the first nlist
    member when trying to set the second!

Thu Feb 23 13:13:53 1989  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * commands.c (child_handler): Really ignore errors under -i and for
    - lines, don't just print a different message.

    * make.c (decode_switches): Fixed handling of arguments (or lack
    thereof) to switches.

Wed Feb 22 16:25:39 1989  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * commands.c (construct_command_argv): Don't clobber LINE when
    checking the IFS variable.

Sun Feb 19 11:17:07 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * load.c [UMAX, not NO_LDAV] (load_average): Return 0.0 rather than
    randomness when calls fail.

    * Version 3.38.

    * commands.c (fatal_error_signal): If handling a user kill signal
    (TERM, INT, HUP), wait for the children without printing the
    "Waiting for children" message, since they will die quickly.

    * Version 3.37.

    * remote-stub.c (remote_status): Take another arg, BLOCK.  If this
    is nonzero block waiting for remote children.  If not, return 0 if
    we would have to block.

    * commands.c (child_handler) [not USG]: If called as a signal
    handler, use wait3 and don't block.
    [USG]: If called as a signal handler, return after handling one child.

Sat Feb 18 13:37:04 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * file.c (snap_deps): Process all double-colon entries of each file,
    not just the first one.

    * Version 3.36.

    * remote-stub.c: remote.c renamed.
    remote.c: Just include remote-stub.c

    * commands.c (child_handler): If we were called as a signal handler,
    return after handling one child.

    * commands.c [not USG]: Include <signal.h> and define `sigmask' if
    <signal.h> doesn't.
    (block_children, unblock_children): Use sigmask rather than
    bitshifting explicitly (and incorrectly).

    * remote.c (remote_kill): New function to send a signal to a
    remote child.

    * commands.c (fatal_error_signal): If we get a SIGTERM, send one to
    each living child.  If we get a SIGTERM, SIGINT, or SIGHUP, delete
    all pending targets before waiting for children.
    (struct child): Add new member `deleted'.
    (start_job): Initialize `deleted' member to 0.
    (delete_child_targets): New function to delete a given child's
    targets, unless the `deleted' flag in the `struct child' says they
    have already been deleted.  Sets this flag before returning.

Thu Feb 16 18:32:07 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * commands.c [USG]: Define `WRETCODE' correctly (X & 0xff00).

Tue Feb 14 16:05:00 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * commands.c (construct_command_argv): Don't make the 0th element of
    the argument list be "sh" when executing /bin/sh, because start_job
    uses the 0th element as the program name.

Sun Feb 12 17:42:05 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.35.

    * read.c (readline): Put a null in the beginning of the buffer
    before starting the reading loop.

    * read.c (read_makefile): Made main reading loop while
    !feof (infile), and removed EOF check after calling readline.

Sun Feb  5 19:52:38 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * remote.c (block_remote_children, unblock_remote_children): New
    (stub) functions to block and restore asynchronous notification of
    remote child death.

    * commands.c (block_children): Call block_remote_children.
    (unblock_children): Call unblock_remote_children.
    (child_handler): If called as a signal handler, block remote
    children on entry and unblock them before returning.

    * commands.c (child_handler): For unknown children, if they are
    remote, give their remote ID; if local, give their PID and make's.

    * commands.c (execute_file_command): Don't put a new child in the
    chain unless start_job succeeds.  Block children before calling
    start_job, and unblock them after putting the child in the chain and
    incrementing `job_slots_used' (if start_job succeeded).

    * commands.c (block_children, unblock_children): Make these globally
    visible (not `static').
    commands.h: Declare block_children and unblock_children.

    * variable.c (expand_function: `shell'): Use
    `shell_function_completed'.  Block children before forking and
    unblock after `shell_function_pid' is set properly and
    `shell_functon_completed' is reset to 0.

    * commands.c (child_handler): When the child of the `shell' function
    completes, set `shell_function_completed' to 1 if it actually ran,
    or -1 if it didn't (due to fork or exec failure).

    * commands.c (block_children, unblock_children): New functions to
    block and unblock the child termination signal.
    (wait_for_children): Use block_children and unblock_children.
    (execute_file_commands): Block children around the critical section
    wherein a new child is put on the chain.

    * make.c (main): Change the environment to contain the correct
    MAKELEVEL before re-execing.

Sat Feb  4 18:28:48 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.34.

Fri Feb  3 16:36:49 1989  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

    * rule.c (default_variables): Fixed $(LINK.c).

Wed Feb  1 18:05:07 1989  Roland McGrath  (mcgrath at pepper.Berkeley.EDU)

    * Version 3.33.

    * version.c: Removed copyright notice, since this is a one-line file.

    * commands.c (error_status): Made it return BUF, rather than running
    off the end (this apparently worked on Sun 3s for some reason).

    * ar.c, commands.c, dep.h, load.c, make.c, make.h, read.c, remake.c,
    rule.c, variable.c, Makefile: Changed copyrght notices to cover 1989.

Mon Jan 30 15:51:28 1989  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

    * Version 3.32.

Fri Jan 27 20:09:24 1989  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * remake.c (remake_file): Don't touch phony targets.

    * rule.c (convert_to_pattern): Fixed an incorrect length passed to
    savestring.

    * variable.c (expand_function: `shell'): Close the read side of the
    pipe on the parent side of the fork.

    * commands.c (start_job): On the child of the fork, close the
    BAD_STDIN fd if we're not using it.

    * read.c (record_files): A file beginning with a dot can be a
    default target if it also contains a slash (as in `../foo').

    * commands.c (wait_for_children): For BSD, block SIGCHLD rather than
    ignoring it to avoid a race condition when child_handler is returning.

    * commands.c (child_handler): Do blocking waits.
    (error_status): Return a string describing exit status.  (Split out
    of child_handler).

    * read.c (multi_glob): Change VECTOR to VEC for Alliant.

Thu Jan  5 00:06:51 1989  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

    * Version 3.31.

    * make.texinfo (Features): Noted $(foo:PAT=SUB) from SunOS 4.0.

    * make.texinfo (Options/Recursion): -d and -p go in the environment.

    * load.c: Include "commands.h".

Wed Jan  4 17:49:25 1989  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

    * make.c (switches): -d and -p can come from the environment and are
    put into it.

    * read.c (record_files): Fixed the checking for duplicate deps so it
    doesn't clobber the first one.

    * make.texinfo: Documented default implicit rule changes.

    * rule.c: Revamped default suffix rules.  They now use Sun's style
    of using variables `COMPILE.c', `LINK.c', etc. for each suffix, and
    use `TARGET_ARCH' and `TARGET_MACH' variable where appropriate.
    Also support Modula-2 compilation (suffixes .sym, .def, and .mod).
    Ratfor Yacc support is gone, since nobody has yacc -r.
    All EFL support is gone, since nobody uses EFL.

    * ar.c, arscan.c: Don't assume `long int' and `int' are the same.

    * commands.c [USG]: Fixed wait status bit encoding.
    [USG and not USGr3] (dup2): Define this for SysVr2.

    * make.h, dep.h, make.c [iAPX286]: Make allowances for this
    brain-damaged compiler.

    * make.texinfo (Variables: Flavors): Fixed a typo.

Tue Jan  3 18:09:31 1989  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

    * ar.c (ar_member_date, ar_touch): Truncate member names to 15 chars.

    * Version 3.30.

    * commands.c [SYS_WAIT]: If this is defined, use BSD <sys/wait.h>
    and wait3 even if USG.

    * read.c (record_files): Defining .DEFAULT with no deps or commands
    clears its commands.

    * rule.c (default_suffixes): Added `.sh'.
    (default_suffix_rules): Added single-suffix .sh rule, copies source
    to target and makes target executable.
    make.texinfo (Catalogue of Rules): Documented .sh rule and its use
    in conjunction with SCCS.

    * rule.c (set_default_suffixes): Define variable `SUFFIXES' to the
    default list ("" under -r).
    make.texinfo (Suffix Rules): Document `SUFFIXES' variable.

    * rule.c (default_variables), make.texinfo (Implicit Variables):
    Variable AR defaults to `ar', ARFLAGS to `rv', and RM to `rm -f'.

    * rule.c (install_default_pattern_rules): Default variables are made
    recursive.
    (default_variables): Added "CPP", defined to "$(CC) -E".
    (default_suffixes): Added `.S', before `.s'.
    (default_suffix_rules): New rule for .S to .s, runs CPP.
    All rules that use CPP now include "$(CPPFLAGS)".
    make.texinfo (Catalogue of Implicit Rules, Implicit Variables):
    Documented above changes.

    * commands.c [USG] (sys_siglist): Don't define.
    [USG] (init_siglist): New function to initialize sys_siglist.

    * make.texinfo (Variables: Reference): Documented `$(foo:PAT=SUB)'
    references.

    * variable.c (variable_expand): A reference `$(foo:PAT=SUB)' is
    equivalent to `$(patsubst PAT,SUB,$(foo))'.

    * variable.c (variable_expand): Free the storage for the expansion
    of a recursive variable when it is nod longer needed.

    * variable.c (variable_expand): When checking for `$($(foo))', use
    lindex so as not to search for the second `$' outside the parens.

    * make.c (struct stringlist, main, decode_switches): Changed `index'
    member to `idx'.

Sat Dec 24 16:02:32 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * commands.c (wait_for_children [USG]): Handle SIGCLD with SIG_DFL,
    rather than SIG_IGN.  Ignoring SIGCLD reportedly makes wait return -1.

    * arscan.c [USGr3]: Define PORTAR to 1 (as with sun386).
    (ar_scan [USGr3]): Remove trailing slashes from member names.

Thu Dec 22 17:54:05 1988  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

    * make.texinfo (Makefiles: Overriding Makefiles): New node
    documenting use of .DEFAULT to have one makefile defer unmakeable
    targets to another.

    * make.texinfo (Implicit: Using Implicit, Implicit: Last Resort):
    Mention empty commands and xref node `Empty Commands'.

Wed Dec 21 20:12:40 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * Version 3.29.

    * make.c (struct command_switch, command_switches, et al): New
    member `noarg_value', if not nil, ptr to value to use if no arg is
    given to a switch that would otherwise require one.  The -j option
    can now be given w/o an arg, to mean infinite jobs.
    * commands.c: If job_slots is zero, infinite jobs.

    * read.c (read_all_makefiles, read_makefile): Make makefiles precious.

    * make.c (decode_switches): For a positive_int or floating option,
    if we moved to the next argument word, but found no argument for the
    option, move back to the correct word.

    * make.c (decode_switches): If we got any unknown options, die after
    processing all arguments.

    * GNUmakefile: Moved `include depend' to the end, so the default
    goal will be set before then.

    * load.c (wait_to_start_job [Unix, UMAX]): Merged into one version
    under #ifdef LDAV_BASED.  Only loop while we have jobs running.
    Sleep for increasing amounts (increase one second per iteration)
    before checking the load average (after the first check).
    Get the load average from function load_average.
    (wait_to_start_job [not LDAV_BASED]): Always return.
    (load_average [UMAX]): Fetch load average for Encore UMAX.
    (load_average [not NO_LDAV]): Fetch load average from /dev/kmem.
    [not NO_LDAV]: Define LDAV_BASED.

Tue Dec 20 18:54:50 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * Version 3.28.

    * commands.c (wait_for_children): Take second arg, ERROR.  If
    nonzero, and there are children, print a message on stderr.
    (execute_file_commands, fatal_error_signal): Pass second arg.
    * make.c (die), remake.c (update_goal_chain), variable.c
    (expand_function: `shell'): Ditto.

Sat Dec 17 01:05:38 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * commands.c (start_job): Call wait_to_start_job before forking.

    * load.c (load_average): Converted to wait_to_start_job.

    * remote.c: New file for remote execution functions.
    (start_remote_job_p): Return nonzero if the next job should be run
    remotely.
    (start_remote_job): Start a remote job and return an ID for it.
    (remote_status): Get status of dead remote children.

Fri Dec 16 16:51:07 1988  Roland McGrath  (mcgrath at hecuba.Berkeley.EDU)

    * commands.c (start_job): If start_remote_job_p () returns nonzero,
    call start_remote_job to start the job rather than fork and exec.
    (child_handler):

    * commands.c (execute_file_commands): Moved load average checking to
    start_job.

    * commands.c (child_handler: USG): Record the pid wait returns.

    * load.c (UMAX): Added some #include's needed for UMAX.

    * read.c (multi_glob), variable.c (string_glob): Ignore a (char **)
    -1 return from glob_filename.

    * variable.c (variable_expand): Make sure we don't increment past
    the end of the string we were passed.

    * variable.c (variable_expand): Terminate the expansion.

    * file.c (rename_file): If there is already a file under the new
    name, set its contents equal to FILE's (ick).

    * variable.c (define_automatic_variables): Pass all the args to
    define_variable when defining MAKELEVEL!

    * commands.c (execute_file_commands): If max_load_average > 0, and
    we have children running, don't start up another child until the
    load average goes below max_load_average.

    * make.c: New variable `max_load_average'.
    (struct command_switch, decode_switches, decode_env_switches):
    Handle floating-point (double) args.
    (command_switches): Added `-l' switch to set `max_load_average'.

    * load.c (load_average): New file and function to return a double
    that is the current load average (1.00 scale).
    * GNUmakefile, oldMakefile: Pass flags in $(LOAD_AVG) for load.c.

Thu Dec 15 15:22:08 1988  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

    * Makefile: Renamed to oldMakefile.
    * GNUmakefile: Make Makefile from oldMakefile and depend.

    * read.c (read_all_makefiles): When putting the default makefiles in
    the read_makefiles chain so they will be remade, put them in the
    right order.

    * remake.c (update_goal_chain): If MAKEFILES is nonzero, always make
    in serial, and return as soon as one goal whose `changed' member is
    nonzero  is successfully remade.

    * commands.c: Don't include <sys/fcntl.h>.

    * commands.c (construct_command_argv): Added ` to sh_chars.

    * make.h: Don't declare construct_makeflags.

    * make.c (main): Set up MAKEFLAGS and MFLAGS and make an environment
    both before and after reading the makefiles, so the makefiles can
    use them and possible change them, and later children will get the
    right information.
    (construct_makeflags): Replaced with define_makeflags (static void),
    which defines the two variables.
    * variable.c (define_automatic_variables): Don't define MAKEFLAGS
    and MFLAGS.

Mon Dec 12 14:40:31 1988  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

    * Version 3.27.

    * commands.c (child_handler): Reset the handler to ourselves when
    called for USG, since it has no safe signals.

    * commands.c: For USG, use an int rather than a `union wait' for
    wait calls, and dissect it with bitmasks.
    (child_handler): No wait3 system call in USG.  Since we can't
    protect from hanging, always return immediately if we have no
    children we know about and we're not running a `shell' function.
    (There is still the danger of hanging waiting for a child that died
    without our being notified.)

    * remake.c: Include <fcntl.h> instead of <sys/file.h>.  What we need
    is really in <fcntl.h>, and while BSD <sys/file.h> includes
    <fcntl.h>, USG doesn't.

    * make.c (main): Figure out the program name before doing anything
    which might need it (in a call to error or fatal).

    * dir.c, glob.c: Use `struct dirent' and <dirent.h> for USGr3.

    * arscan.c (ar_scan): Added missing & before buf (which is an int)
    if SARMAG is not defined (SysV).

Fri Dec  9 18:44:13 1988  Roland McGrath  (mcgrath at pepper.Berkeley.EDU)

    * Version 3.26.

    * dir.c (find_directory, dir_file_exists_p): Keep track of how many
    directories we have open and don't let it be more than
    MAX_OPEN_DIRECTORIES (currently 10).

    * variable.c (expand_function: `foreach'): Use expand_argument
    rather than variable_expand so each repetition doesn't clobber the
    last!!!

Mon Dec  5 15:58:46 1988  Roland McGrath  (mcgrath at hecuba.Berkeley.EDU)

    * Version 3.25.

    * Makefile: Define `install' target.

    * GNUmakefile: Don't include GNUmakefile or depend in the
    distribution file.

Wed Nov 30 15:53:42 1988  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

    * commands.c (execute_file_commands): Don't clobber a null into
    random storage if there were no $^ and/or $? words.

    * remake.c (check_dep): Set *MUST_MAKE_PTR nonzero if a dependency
    doesn't exist.

    * ar.c (ar_member_date, ar_touch): Make sure the modtime of the
    archive file itself is known before we fetch or change the modtime
    of one of its members.

    * read.c (read_makefile): Expand variable and function references
    before parsing rules so variable can contain special characters
    (colons and semicolons).

Sat Nov 26 11:36:31 1988  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

    * variable.c (expand_function: `filter', `filter-out'): Fixed so
    that filter-out works right.

    * variable.c (expand_function: `filter', `filter-out'): Made these
    functions use each word of their first argument as a pattern.

Fri Nov 25 10:51:47 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.24.

    * read.c (record_files): If a target is listed more than once in a
    single rule (that defines commands), give a warning message rather
    than the counter-intuitive message saying commands were already
    defined (in the same place).

    * make.c (fatal, error): Made them both take 6 args since there is
    at least one error message that need that many.  Too bad vfprintf is
    not universal!

    * Version 3.23.

    * read.c (read_makefile): Moved the construction of the `struct
    commands' into record_files.  Call record_files before recursing for an
    included makefile so the higher-up will determine the default goal.
    (record_files): Take arguments COMMANDS, COMMANDS_IDX and
    COMMANDS_STARTED and construct a `struct commands.

Thu Nov 24 14:36:33 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.22.

    * make.c (main): Made it a fatal error if we can't move back to the
    directory we started in before re-execing.

    * make.c (main): Get the current directory before doing anything
    else, so we know it even if we don't need it for the value of
    `MAKE', since we might want it when re-execing.

Wed Nov 23 13:34:44 1988  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

    * Version 3.21.

    * read.c (record_files): Eliminate duplicate deps in a chain.

    * variable.c (expand_function: `sort'): Pass the right number to
    qsort, not one less.

    * remake.c (remake_file): Always call notice_finished_file if
    FILE->command_state == cs_finished.

    * commands.c (execute_file_commands): Call notice_finished_file to
    set FILE's status correctly when start_job fails (because it's out
    of commands or running under -n).

Fri Nov 18 15:31:12 1988  Roland McGrath  (mcgrath at saffron.Berkeley.EDU)

    * Version 3.20.

    * remake.c (update_file_1): Set the `update_status' of FILE to
    nonzero and set FILE's `updated' bit if we have decided to give up
    on remaking FILE because of errors in the dependencies.

    * rule.c (pattern_search): Debugging messages use `dependency' (vs.
    `dependent') properly.

    * make.texinfo (Conditionals: Conditional Syntax): Function index
    entries for `ifndef' and `ifneq'.

    * variable.c (define_automatic_variables): Define `MAKELEVEL' to the
    decimal number of the makelevel, since it may be malformed or blank.

    * remake.c (remake_file): Call notice_finished_file after touching.

Sat Nov 12 19:29:34 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * Version 3.19.

    * GNUmakefile (dist): Pass the `-f' flag to compress.

    * vpath.c (build_vpath_lists): Check for VPATHS being nil after
    constructing the general VPATH list from the `VPATH' variable.

Fri Nov 11 08:02:26 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * make.c (fatal, error): Made error messages for recursive runs be
    shorter.

Thu Nov 10 16:51:36 1988  Roland McGrath  (mcgrath at basil.Berkeley.EDU)

    * Version 3.18.

    * read.c (read_makefile): Made it eat leading spaces and formfeeds
    (but not tabs), like it's documented to.

    * read.c (read_makefile): Let included makefiles determine the
    default goal, as is done by System V Make.

Tue Nov  1 19:03:08 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * variable.c (new_environ): Don't increment VCNT when a variable is
    rejected.

Fri Oct 28 16:54:15 1988  Roland McGrath  (mcgrath at basil.Berkeley.EDU)

    * Version 3.17.

    * rule.c (convert_to_pattern): Don't use the same storage for a name
    in two rules since new_pattern_rule may free this storage when a
    rule is discarded.

    * rule.c (new_pattern_rule): Undid useless change I made Oct 25.

Thu Oct 27 19:17:53 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * Version 3.16.

    * GNUmakefile, Makefile: Fixed a typo in a comment.
    * Makefile: Removed malloc.o from object file list.

    * variable.c: Removed old debugging #define's for xmalloc and
    xrealloc so non-ANSI cpp's won't barf.

    * make.c (main): Made local array for temp file name static so
    compilers that don't do auto aggregate initialization won't barf.

    * read.c: Removed static declaration of copy_dep_chain since it is
    no longer static.

Tue Oct 25 16:59:30 1988  Roland McGrath  (mcgrath at pepper.Berkeley.EDU)

    * rule.c (new_pattern_rule): If we threw out the new rule because it
    matched an old one and OVERRIDE was zero, don't put the freed
    pointer in the chain!

Wed Oct 19 15:07:43 1988  Roland McGrath  (mcgrath at pepper.Berkeley.EDU)

    * Version 3.15.

    * variable.c (expand_function: `sort'): Don't do the sorting and
    writing out if there were no words in the first place.

    * remake.c (remake_file): Only fail with a "no way to make" message
    for a dependency (non-target) file.  If we don't know how to remake
    a target file, pretend it was successfully remade and is very new.

    * remake.c (remake_file): Don't increment `files_remade' for a
    non-target file we don't know how to remake.

    * read.c (record_files): Don't die with "both : and :: entries" for
    a file whose `is_target' flag is not set.

Tue Oct 18 17:24:11 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * variable.c (expand_function: `patsubst', `subst'): Free the right
    things!

    * variable.c (expand_function: `subst'): Don't clobber the
    pointer to the end of the second arg and then try to use it!!!

Mon Oct 17 16:44:45 1988  Roland McGrath  (mcgrath at catnip.Berkeley.EDU)

    * variable.c (expand_function: `patsubst'): Don't clobber the
    pointer to the end of the second arg and then try to use it!!!

    * variable.c (expand_function: `word' function): Made it parse its
    second argument correctly.

    * ar.c (ar_touch): Return 1 rather than -1 for on errors.

Sat Oct 15 15:12:16 1988  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

    * Version 3.14.

    * GNUmakefile: Removed explicit rule for make.dvi since the built-in
    implicit rule now works.

    * rule.c (default_suffix_rules): Fixed .texinfo.dvi rule yet again
    so that it really works, now that parens are counted.

    * remake.c (update_file_1): Set FILE's `updated' flag after calling
    remake_file if it failed or finished immediately.

    * remake.c (update_file): Use the `updated' flag rather than the
    command state to decide if a file was fully considered, and
    therefore might give an "up to date" message.

    * variable.c (expand_function): Made all functions that take more
    than one argument count parens of the appropriate flavor in their
    args and ignore commands nested in parens.

Fri Oct 14 18:35:00 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * read.c (read_all_makefiles): Pass second arg to read_makefile for
    default makefiles.

Thu Oct 13 16:40:08 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * Version 3.13.

    * GNUmakefile: Added an explicit rule for make.dvi since the
    built-in .texinfo.dvi implicit rule is screwed up.

    * rule.c (default_suffix_rules): Added a comment that the
    .texinfo.dvi rule does not work because of an ahem, feature of Make
    that at some point will be fixed--er, enhanced to alleviate this
    difficulty.

    * rule.c (default_suffix_rules): Fixed Texinfo -> DVI rule (again).

    * make.texinfo (Commands: Execution): Documented new competing for
    standard input among children.

    * commands.c (struct child): Added `good_stdin' flag to tell if this
    child has the stdin that doesn't point into nirvana.
    (good_stdin_used): New variable to tell if any child has the good
    standard input.
    (child_handler): Reset `good_stdin_used' if a dead child's
    `good_stdin' flag is set.
    (start_job): Give the new child the good standard input if
    `good_stdin_used' is no set, and set the child's `good_stdin' flag
    appropriately.

    * rule.c (default_suffix_rules): Changed Texinfo -> DVI rule to work
    better (I hope).

    * read.c (read_all_makefiles): Stop reading default makefiles after
    one is found.

    * read.c (read_makefile): Reset `reading_filename' and
    `reading_lineno_ptr' after recursing for an included makefile.

    * GNUmakefile: New GNU Make-specific makefile that does everything
    Makefile does plus distribution stuff, and doesn't contain any hacks
    to try to work with Unix make.

    * Makefile: Removed distribution stuff.

    * make.c (main): Use mktemp to construct the names of temporary
    files used for standard input makefiles.

    * make.c (main): Don't turn standard input into a broken pipe.

    * commands.c (start_job): Keep two extra file descriptors around: a
    good standard input, and a bad one that reads from a broken pipe.
    On the child side of the fork, if there are other children, give
    this one the broken pipe so they won't compete; if this is the only
    one, give it the good standard input.

    * make.h: Declare notice_finished_file.

    * commands.c (execute_file_commands): Use noticed_finished_file
    after waiting for the child when there is only one job slot.

    * remake.c (notice_finished_file): New function to re-check mtime's
    and such things to be done when commands finish.
    (update_file_1): Use notice_finished_file.

    * commands.c (child_handler, execute_file_commands): Use new
    variable `job_slots_used' to record the number of jobs currently
    running, rather than diddling with `job_slots'.
    (execute_file_commands): Increment `job_slots_used' before calling
    start_job and decrement it on failure to avoid race condition.
    If there is only one job slot, wait for the child to finish and
    return its status so commands are run in linear order, as if there
    were no parallelism.

Wed Oct 12 15:59:03 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * remake.c (remake_file): Don't print a "No way to make" message for
    targets whose `dontcare' flags are set.

    * read.c (read_all_makefiles): Set the `dontcare' flag of the
    `struct file' each default makefile added to the chain.

    * file.h (struct file): Add `dontcare' member.

    * read.c (read_all_makefiles): When no default makefiles are found,
    put the names of all those tried in the `read_makefiles' chain so
    they will be updated if possible, giving their `struct dep's'
    `changed' members the value of 0 so we won't care if they cannot be
    found or remade.

    * make.texinfo (Makefiles: Remaking Makefiles): Documented that
    default makefiles will be remade if not found.

    * read.c (read_all_makefiles): If no default makefiles can be found,
    go through the list of default names, trying to make one, stopping
    if one is made.

    * remake.c (remake_file): Set STATUS to 0 after successfully touching.

    * dir.c (file_impossible, file_impossible_p): Don't clobber FILENAME
    to "" and then try to to a strcmp on it!!!

Mon Oct 10 16:09:18 1988  Roland McGrath  (mcgrath at cinnamon.Berkeley.EDU)

    * make.c (main): Don't do `dir_load (".")'.

    * rule.c (count_implicit_rule_limits), vpath.c
    (construct_vpath_list): Test the existence of a given directory by
    `dir_file_exists_p (DIR, ".")' and assume that if this returns zero,
    it means the directory really does not exist.

    * dir.c (struct dirdata): Replaced with `struct directory' for
    directories, each containing a chain of `struct dirfiles', one for
    each file (real or impossible).
    (dir_load): Removed.
    (find_directory): New function to find the `struct directory' for a
    named directory and return it (possibly creating a new one).
    (dir_file_exists_p): Read the directory on the fly if its stream is
    still valid (and ever was) if the file we're looking for is not
    already in the hash tables.
    (file_impossible, file_impossible_p, dir_name, print_dir_data_base):
    Use the new directory/file scheme.

    * make.texinfo: Miscellaneous editorial changes and clarifiactions.

    * commands.c (struct child): Remove `environ' member.
    (child_handler, start_job, execute_file_commands): Remove use of
    `environ' member and new_environ.

    * make.c (main): Call new_environ after reading makefiles.

    * variable.h: Declare `new_environ' to return void.

    * variable.c (new_environ): Put the environment in `environ' and
    return void.

Fri Oct  7 15:48:39 1988  Roland McGrath  (mcgrath at pepper.Berkeley.EDU)

    * Version 3.12.

    * Makefile: Don't make the uncompressed tar file.

    * variable.c (expand_function: `shell' function): Made it not expect
    read to null-terminate the buffer.

    * Makefile: Made it use a temporary symlink to . rather than a
    temporary directory to make the distribution tar file.

Thu Oct  6 17:52:35 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.11.

    * make.texinfo: Fixed a line that got garbaged somehow.

Mon Oct  3 16:14:39 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * make.c (main): Try to move back to the directory we started in
    before re-exec ourself.

    * remake.c (update_file_1): A double-colon target with no deps
    always needs to be remade.

    * remake.c (remake_file): Changed "No way to make" message to say
    `target' rather than `file'.

Sun Oct  2 12:50:47 1988  Roland McGrath  (mcgrath at catnip.Berkeley.EDU)

    * remake.c (update_file_1): Set FILE->update_status to the return
    value of remake_file.

    * rule.c (convert_to_pattern): Fixed swapped lengths passed to
    xmalloc for source/target suffixes.

    * make.texinfo: Documented that MAKEFLAGS and MFLAGS are read in
    from makefiles.  Updated the `Features' section a bit.

    * make.c (main): Read switches from MAKEFLAGS and MFLAGS variables
    after reading in makefiles.

    * make.c (main): Put a line "/tmp/foo:;" rather than ".PHONY:
    /tmp/foo" in front of temp files made for stdin makefiles.

    * remake.c (update_file): Test the state of the right `struct file'
    for double-colon files.

    * make.c (main): Put a ".PHONY: /tmp/foo" line in front of temp
    files made for stdin makefiles so they won't be remade when we
    re-exec.  Kludge-o-matic!!

    * remake.c (update_goal_chain): Judge files as being finished based
    on their `updated' flag, not their state.

    * read.c (read_makefile): Don't check for FILENAME being "-".
    (read_all_makefiles): Set each element of MAKEFILES to the name put
    in READ_MAKEFILES by read_makefile, since read_makefile may free the
    storage for the name it is passed, and someone might want to look at
    the elements of MAKEFILES again.

    * make.c (main): For each `-f' flag with arg `-' (standard input),
    read standard input into a temp file and pass the temp file's name
    to read_all_makefiles, after making sure it will not be remade.

    * make.c (construct_makeflags): Always put out `-j1'.

Sat Oct  1 00:19:59 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * commands.c (execute_file_commands): If commands are nothing but
    whitespace, set the state to `cs_finished' before returning 0.

    * make.c (decode_switches): Allocate space for args in stringlists
    so they can be freed later.

    * make.h: Declare `makelevel'.

    * variable.c (makelevel): Moved to make.c (and made global).

    * make.c (fatal, error): Print the makelevel if it's > 0.
    (perror_with_name): Use error rather than calling fprintf directly.
    (pfatal_with_name): Use fatal rather than fprintf and die.

    * variable.c (new_environ): Don't put default variables (origin
    `o_default') into the environment; they just take up space.

    * read.c (read_makefile): Don't add FILENAME to the chain of read
    makefiles if it's "-" (standard input).

    * remake.c (update_goal_chain): Set STATUS correctly when nothing
    happens (as well as in all other situations).

    * make.c (construct_makeflags): Put a `-' before each switch and
    spaces between them.

    * Version 3.10.

    * commands.c (wait_for_children): Don't check if `children' is nil.
    This is the case when waiting for the child of a `shell' function.

    * dir.c (dir_load): Don't add a hash-table entry for directory
    DIRNAME and filename "" if DIRNAME doesn't exist.

    * commands.c (execute_file_commands): Return 0 after start_job
    returns 1 (failure) under the -n flag.

    * remake.c (remake_file): Set the state to `cs_finished' when not
    calling execute_file_commands.

    * remake.c (update_goal_chain): Second arg is now MAKEFILES, nonzero
    meaning to disable -t, -q, and -n for each target unless the target
    was also given on the command-line.

    * read.c (read_makefile): Enter the `struct file's for the makefiles
    added to the `read_makefiles' `struct dep' chain.

    * remake.c (update_goal_chain): Made it not enter the files for the
    goals in the chain.  It will already have been done.

    * rule.c (convert_to_pattern): Null-terminate the names of targets
    and deps of the pattern rules properly.

Fri Sep 30 18:56:20 1988  Roland McGrath  (mcgrath at nutmeg.Berkeley.EDU)

    * make.c (main): Call install_default_pattern_rules.

    * make.h: Declare copy_dep_chain.

    * read.c (copy_dep_chain): Moved to make.c (and made global).

    * make.c (main): Call update_goal_chain to update goals.
    Update read makefiles and re-exec self if they change.

    * remake.c (update_file): Make this function static.
    (update_goal_chain): New function to update a `struct dep' chain of
    goals, waiting until they are all finished before returning.

    * make.h: Don't declare update_file.  Declare update_goal_chain.

    * make.c (main): Call snap_deps, etc. that were in read_all_makefiles.

    * read.c (find_makefile): Removed this function.
    (read_all_makefiles): Don't update makefiles, don't diddle with
    pattern rules, don't call snap_deps, etc.  Return a `struct dep'
    chain of all makefiles read.
    (read_makefile): Now takes two args: FILENAME and TYPE, which is 0
    for a normal makefile, 1 for MAKEFILES variable or 2 for an included
    makefile.  Add a `struct dep' containing the name of the makefile
    (as it was found in the search path for type 2s), and TYPE in the
    `changed' member to the global `read_makefiles' chain.

    * make.h, rule.c (displace_pattern_rules,
    add_displaced_pattern_rules): Removed these functions.

    * read.c (read_makefile): Variable-expand the name of an `include'd
    makefile before calling find_makefile on it.

    * file.c (snap_deps): If the `struct file' for a `struct dep'
    already exists, free the `struct dep's `name' member before setting
    it to nil (since this info is in the `struct file').

    * read.c (copy_dep_chain): Made it copy each name rather than
    leaving multiple `struct dep's with the same pointers.

Thu Sep 29 19:08:13 1988  Roland McGrath  (mcgrath at catnip.Berkeley.EDU)

    * make.c (decode_switches): Fixed second decode_env_switches call to
    use correct length of "MFLAGS" (6, not 5).

    * read.c (read_makefile): Don't stop reading when readline returns
    zero lines read.  Only stop when the stream reaches EOF.  This makes
    it recognize the last line of a makefile without a newline.

    * remake.c (remake_file): If we don't know how to make FILE, set its
    command state to `cs_finished'.

    * remake.c (update_file): Don't write the "up to date" message if
    update_file_1 returned a nonzero status.

Wed Sep 28 16:30:07 1988  Roland McGrath  (mcgrath at catnip.Berkeley.EDU)

    * commands.c (child_handler): Set the `update_status' member
    properly for ignored errors.

    * rule.c (convert_to_pattern): Made it not care about if the target
    suffix comes before the source suffix in the .SUFFIXES list.

    * make.texinfo: Misc editorial changes.

    * commands.c (wait_for_children): Return immediately if `children'
    is nil (there are no children).

Tue Sep 27 15:33:14 1988  Roland McGrath  (mcgrath at pepper.Berkeley.EDU)

    * Version 3.09.

    * commands.c (struct child): New member `command_ptr' to hold the
    current position in the commands.  The `commands' member is never
    changed.
    (start_job, child_handler, execute_file_commands): Use new method
    for `commands' and `command_ptr' members.

    * make.c (decode_env_switches): Skip past an invalid letter (instead
    of looping forever).

    * commands.c (struct child): Add `environ' member to hold the
    environment for this child.
    (execute_file_commands): Get a new environment from new_environ and
    put in the the new `struct child's `environ' member.
    (child_handler): When freeing a child, free its `commands' member, the
    elements of its `environ' array and its `environ' member itself.
    (start_job): Set `environ' to the child's `environ' member before
    exec'ing the command.

    * variable.h, variable.c (new_environ): Made it return the new
    environment, not putting it in `environ'.

    * remake.c (update_file): Don't give a "is up to date" message
    unless no files were remade and the state went from `cs_not_started'
    to `cs_finished', so repeat calls to finish jobs won't get the message.

Mon Sep 26 16:26:08 1988  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

    * Version 3.08.

    * make.texinfo (Commands: Execution): Documented that children will
    be waited for rather than killed.

    * commands.c (fatal_error_signal): Wait for children.
    (kill_children): Removed this function.

    * make.c (main, die): Wait for children to die, don't kill them.

    * variable.c (expand_function): Use wait_for_children.

    * make.c (main): Use wait_for_children rather than child_handler.

    * commands.c (wait_for_children): New function to block waiting for
    children, insuring that child_handler is not called recursively.
    (execute_file_commands, kill_children): Use wait_for_children.

    * commands.c (child_handler): Start up additional commands in a
    sequence after an ignored error.

    * remake.c (update_file): Don't print "`foo' is up to date" messages
    when update_file_1 returns while commands are executing.

    * remake.c (update_file_1): Pass the file name to name_mtime, not
    the bloody `struct file', dammit!!

    * commands.c (child_handler): Print out the "*** ..." error message
    when not under -i.  (I somehow forgot this.)

    * remake.c (update_file_1): Use name_mtime rather than file_mtime to
    re-get the mtime of a file whose commands have finished.

    * make.c (command_switches, decode_switches, decode_env_switches):
    Make all switches that take string args allow them right after the
    switch letter.

    * commands.c (child_handler): Check for a child being the `shell'
    function's command returning and set the global variable for
    expand_function to check.

    * variable.c (expand_function): For the `shell' function, instead of
    waiting for the child shell ourselves, let child_handler do it and
    loop around waiting for something to happen.

    * make.c (print_version): Made the copyright year static, not dynamic.

    * make.h, make.c: Remove construct_argv function.

    * make.c (main): Say "no goal target" instead of "no target".

    * make.texinfo (Commands: Parallel): Don't send SIGKILL.

    * commands.c (kill_children): Don't send SIGKILL to children that
    aren't killed by the first signal.

    * make.c (main), commands.c (kill_children): Decide between SIGCHLD
    and SIGCLD based on whether or not SIGCHLD is defined, not on USG.

    * Makefile: Link make with $(LOADLIBES).

    * read.c (construct_include_path): Fixed another bad xrealloc call.

    * make.c (decode_switches): Fixed an xrealloc call with no first arg.

Sat Sep 24 01:16:21 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * Version 3.07.

    * remake.c (update_file_1): If deps are running, set state to
    `cs_deps_running' and return 0.  If deps are done, run commands.

    * commands.c (child_handler): Made it delete non-precious targets
    killed by fatal signals.

    * make.texinfo: Documented parallelism.

Fri Sep 23 16:52:27 1988  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

    * remake.c (update_file_1): Don't return if FILE's state is
    `cs_deps_running'.  In that case, we need to run through and check
    the states of all our dependencies.

    * commands.c (execute_file_commands): Decrement `job_slots' after
    starting a new job to run file commands.

    * commands.c (start_job): Made it set the state to `cs_running'.

    * make.c (main): Fixed usage of `g', `lastgoal', and `goals' in the
    goal-making loop.

    * commands.c (child_handler): When commands finish, set the
    corresponding file's `update_status' and `updated' flags as
    appropriate, and reset the modtimes of the file and any `also_make'
    files it has.

    * remake.c (remake_file): Don't re-set `last_mtime' and set `updated'.

    * commands.c (fatal_error_signal): Don't swallow all the children
    with a loop around `wait ((union wait *) 0)'!!!

    * make.c (struct command_switch): Added `positive_int' type.
    (switches): Added -j (job_slots).
    (construct_makeflags, decode_switches, decode_env_switches):
    Handle`positive_int'-type switches.

    * glob.c (glob_vector): Rename local variable `vector' to `VeCtOr'.
    This is said to avoid a conflict with some system's global `vector'
    variable.

    * variable.c (expand_function): Made the `shell' function use
    construct_command_argv and do its own child control and piping.

    * make.c (main): Turn standard input into a broken pipe after
    reading in all makefiles (the last time it will be needed).

    * commands.c (struct child): Remove `pipe_fd' member.  We don't use
    pipes any more.
    (start_job): Return 0 for success, 1 or failure (rather than void).
    Don't use pipes.  Don't turn the child's stdin into a broken pipe.
    (child_handler): Print "*** Error" messages when necessary.
    Die on failed commands when -k was not given.
    (execute_file_commands): Check the return of start_job and remove
    the child from the chain and return failure if it is nonzero.

    * make.c (die): New function to clean up and exit.
    (fatal, pfatal_with_name): Use die.

Thu Sep 22 14:27:11 1988  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

    * commands.c (struct child): Added `commands', `pipe_fd', and
    `noerror' members to keep track of info about a command thread.
    (start_job): New function to start a job and update the argument
    `struct child' to reflect its status.
    (execute_file_commands): Merged run_file_commands back in.
    Made it use new start_job function.

    * rule.c (freerule): Don't free the `struct commands' of the
    discarded rule.  It may be used in more than one place.

    * commands.c (execute_command_line): Made it not try to delete the
    possibly partly-made file.  The child_handler function will do this.
    (fatal_error_signal): Ditto + call kill_children.

    * make.h: Declare job_slots.

    * make.c (main): Collect goals in a dep chain and run through this
    chain waiting for a child, eliminating finished goals, updating all
    remaining goals, and quitting if they fail and not -k.

    * commands.c (child_handler): If called with SIG < 0, - SIG is the
    max number of children to bury.

    * commands.c (child_handler): If called with SIG as zero,
    block waiting for running children.
    (kill_children): Call child_handler with zero rather than SIGCHLD.

    * remake.c (update_file_1): Use the `command_state' member of FILE
    and its dependencies to determine what commands are running, what to
    do, etc.  If commands or dep commands are running when we are
    called, return success (0).  If commands finished since the last
    time we were called, return their status.

    * commands.h: Declare kill_children.

    * commands.c: Define `struct child' to keep track of child
    processes, with the chain in `children'.
    (child_handler): New function to catch child-termination signals
    (SIGCHLD, or SIGCLD for USG), store the returned status in the
    appropriate structure, take the now-obsolete `struct child' out of
    the chain, and free its storage.
    (execute_file_commands): Put all of the stuff invloving running the
    commands into new function run_file_commands.  Execute_file_commands
    now does process management for the commands, while
    run_file_commands (which is run in a subprocess) runs the commands.
    (kill_children): New function to kill all running children by
    sending them signal SIG.  If there are any children still living
    after they are all sent SIG, they are all sent SIGKILL.

    * make.c (main): Catch SIGCHLD (SIGCLD for USG) with child_handler.

    * commands.h: Declare child_handler function.

    * commands.c (execute_file_commands): Check the `command_state'
    member of FILE and return 0 if it is `cs_running' or
    `cs_deps_running' and return the stored status if it is `cs_finished'.

    * file.h (struct file): Added `command_state' member.

    * commands.c (execute_command_line): Add `$' to the list of
    characters special to the shell.

Wed Sep 21 15:57:41 1988  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

    * read.c (read_all_makefiles): Call convert_to_pattern before
    recomputing the limits after adding the displaced rules.

    * make.c (main): Move calls to snap_deps, convert_to_pattern, and
    build_vpath_lists to read_all_makefiles.

    * read.c (read_all_makefiles): Install the default pattern rules
    before checking to remake the makefiles, displace these rules before
    reading in the makefiles, and then add the displaced rules to the
    chain after reading in all the makefiles.

    * make.c (main): Don't call install_default_pattern_rules or
    count_implicit_rule_limits.

    * make.h: Declare displace_pattern_rules and
    add_displaced_pattern_rules.

    * rule.c (displace_pattern_rules, add_displaced_pattern_rules): New
    functions to stow the chain and add the stowed chain on the end of
    the current chain.

    * make.texinfo (Implicit: Search Algorithm): Fixed PREV reference.

    * make.c (main): Call construct_include_path right after decoding
    the switches.

    * read.c (find_makefile): Use rename_file.

    * file.h: Declare rename_file.

    * file.c (rename_file): New function to rename a `struct file' and
    put it in the correct hash bucket.

    * read.c (find_makefile): New function to find and update a makefile.
     (read_all_makefilese): Use find_makefile.
     (read_makefile): Don't do updating.  Removed UPDATEIT arg.

    * remake.c (update_file_1): Took out setting the `updated' member to
    -1 rather than 1 sometimes.

    * make.c (main): Made it print version info before doing anything else.

    * remake.c (library_file_mtime, f_mtime): Removed use of last two
    arguments to vpath_search.

    * rule.c (pattern_search): Removed use of last two arguments
    to vpath_search.

    * vpath.c (vpath_search, selective_vpath_search): Removed unused
    DIRPREFIX and DPLEN args.

    * read.c (read_makefile): Also turn off -n when updating makefiles.

Tue Sep 20 17:01:10 1988  Roland McGrath  (mcgrath at pepper.Berkeley.EDU)

    * Makefile: Put tags files in the tarfile.

    * read.c (read_makefile): Get the modtime of the makefile via a stat
    call so that a later file_mtime call won't do VPATH search for it.

    * read.c (read_makefile): Don't turn off -t and -q if the makefile
    was a command-line target.

    * make.c (main): Enter command-line targets as files and set their
    `cmd_target' members.

    * file.h (struct file): Added `cmd_target' member.

    * read.c (read_makefile): Temporarily turn off -t and -q while
    updating makefiles.

    * make.c (main): Don't use arg 0 from other_args (which is now
    argv[0]; i.e., the program's name).

    * read.c (read_makefile): Only return nonzero if commands were
    actually run to remake the makefile.

    * remake.c (update_file_1): Set FILE->updated to -1 if no commands
    were actually run (because no update was done or -t was given).

    * make.c (decode_switches): Fixed bug wherein xrealloc was passed
    bad args if it tried to expand other_args->list.

    * read.c (read_all_makefiles): Made it not look at the `MAKE'
    variable, just use argv[0].

Sun Sep 18 17:34:11 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

    * read.c (rerun_make): New function to re-exec make.

    * make.c (construct_makeflags, construct_argv): New functions to
    construct the `MAKEFLAGS' variable and to construct an arg list from
    parsed info.

    * read.c (read_makefile): New arg UPDATEIT, if nonzero, says to
    update the makefile as a target before reading it in.  When reading
    included makefiles, pass this as zero.  Now returns nonzero if the
    makefile was updated, zero if not.
    (read_all_makefiles): Pass a nonzero UPDATEIT arg to read_makefile
    for all default and -f makefiles and all makefiles from the
    `MAKEFILES' variable.  If any of the makefiles has changed, re-exec
    self to re-read them.

    * remake.c (update_file): Print a "File `foo' up to date'" message
    under -p.

    * commands.c (execute_file_commands): Allocate one byte for each of
    $^ and $< rather than zero if they are to be empty.

Fri Sep 16 13:59:59 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * Version 3.06.

    * make.c (command_switches): Fixed entry for `-o' switch.

    * make.texinfo: Renamed -c switch to -C.

    * make.c: Renamed -c switch to -C.

    * Miscellaneous de-linting.

    * read.c (record_files): Made it not free the storage for the name
    if it started with `./' and was therefore not quite the same as in
    the `struct file'.

    * read.c (record_files): If commands were specified twice, the error
    message specifies in what files and at what line numbers.

    * make.c (main): If any of the signals we usually fatal on were
    ignored by the parent (probably a shell), ignore them.

    * make.c (main): Print version info for -v, -p, or -d.
    (print_data_base): Don't print version info.  It will be done in main.

    * variable.c: Increased number of hash buckets to 257.

    * file.c: Increased number of hash buckets to 1007.

    * rule.c (count_implicit_rule_limits): Moved comptation of
    `maxsuffix' to convert_to_pattern, since that function uses
    `maxsuffix', and must be called before count_implicit_rule_limits.

    * rule.c (pattern_search): If an existent (non-intermediate)
    dependendency was found via a terminal rule, set its
    `tried_implicit' flag, so it will never have implicit rule search done.

    * glob.c: Bug fix to avoid alloca(0).

    * arscan.c: USG and Sun386i fixes.

Thu Sep 15 19:40:26 1988  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

    * make.texinfo: Fixed some typos and spelling errors.

Wed Sep  7 14:20:39 1988  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

    * make.c (decode_switches): Fixed bug wherein a bad option would
    give a useless error message and loop forever.

Tue Sep  6 14:36:02 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * make.texinfo: Documented `shell' function.

    * variable.c (expand_function): New function `shell', does
    backquote-style command expansion of its arg.

    * commands.c (execute_command_line): Second arg OUTBUF, if not nil,
    gets filled in with a malloc'd buffer containing the piped stdout of
    the command.
    (execute_file_commands): Use above (pass nil).

Mon Sep  5 17:03:49 1988  Roland McGrath  (mcgrath at hecuba.Berkeley.EDU)

    * Makefile: Added copyright notice.
    Added a comment about defining `NO_MINUS_C_MINUS_O' if necessary.

    * Version 3.05.

    * rule.c (default_suffix_rules): Don't pass `-o' switches with `-c'
    switches if `NO_MINUS_C_MINUS_O' is #define'd.

    * make.texinfo: Documented `GNUmakefile'.

    * read.c (read_all_makefiles): Made it try default makefile
    `GNUmakefile' before others.

    * make.texinfo: Added new-style Texinfo header thingies.

Sat Sep  3 18:09:39 1988  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

    * Version 3.04.

    * make.texinfo (Chained Rules): Added a @cindex about using
    .PRECIOUS to preserve intermediate files.

    * remake.c (update_file_1): Made it not just return before executing
    commands under -p.

    * rule.c (default_pattern_rules, default_variables): Made it use
    `$(AR)' for `ar r' (to put files in archives).

    * vpath.c (build_vpath_lists): Made it recursively expand the
    `VPATH' variable (by using variable_expand instead of lookup_variable).

    * read.c (conditional_line): Made it not swallow whitespace after
    the comma in an `ifeq' using the `(a,b)' syntax.

    * rule.c (count_implicit_rule_limits): Made it not crash if a
    pattern rule dep begins with `/'.

Sun Aug 28 15:51:12 1988  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

    * make.texinfo: Clarified that the arg to the `origin' function is a
    variable *name*, not a reference.

    * make.texinfo: Clarified that both -Idir and -I dir are allowed.

Sat Aug 27 13:49:28 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * remake.c (remake_file): Made touching phonies work right.

Wed Aug 24 20:40:48 1988  Roland McGrath  (mcgrath at nutmeg.Berkeley.EDU)

    * make.texinfo: Removed reference to `RANLIB' variable.

    * Version 3.03.

    * variables.c (expand_function): Added `origin' function.
    * make.texinfo: Documented same.

    * read.c (record_files): Made double-colon entries work.

Sat Aug 20 21:09:39 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * make.c (collapse_continuations): Bug fix from RMS.

    * rule.c (install_default_pattern_rules): Made it set the
    `in_use' flag of the created rules to zero, rather than letting
    it be random garbage.

    * rule.c (pattern_search): Fixed putting `also make' targets into
    file strucutres.

    * read.c (record_files): Fixed bug which made double-colon entries
    make it read off into space.

    * make.c (decode_switches): Made it understand `ignored' switches
    rather than dumping core.

Sun Aug 14 16:49:00 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * read.c (read_makefile): Made `include' filenames be
    variable-expanded.

    * read.c (read_makefile): Fixed an error message.

    * read.c (read_makefile): Made it accept ^L's as whitespace.
    * make.c (next_token, end_of_token): Ditto.

    * vpath.c (vpath_search): Fixed it so that the general VPATH (from
    the variable) is always checked, even if a selective VPATH (from a
    directive) matched the filename.

Sat Aug 13 14:20:46 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * make.c (decode_switches, main): Made the command switches be
    processed from a table of switches, variables, and types.  No
    functions are passed argc and argv any more.  They are passed arrays
    of strings they need to process.
    * read.c (read_all_makefiles): Made it take an array rather than
    argc and argv.
    (construct_include_path): Ditto.

    * make.c (collapse_continuations): Made it work right (I hope).

    * make.texinfo: Minor editorial changes.

    * read.c (read_makefile): Minor speed improvement by freeing and
    then mallocing something rather than reallocing it to avoid the
    unnecessary bcopy.

Thu Aug 11 00:10:43 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * make.texinfo: Fixed some unquoted @'s.

    * make.texinfo: Documented multiple-target pattern rules.
    Miscellaneous minor editorial changes and corrections.

    * make.texinfo (Implicit: Catalogue of Rules): Removed the list of
    variables.  That's what the next section is for.
    (Implicit: Implicit Variables): Made it agree with reality.

Wed Aug 10 00:55:39 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * variable.c (print_variable_data_base): Fixed bug which made -p
    dump core.  (This was a really idiotic bug.)

    * rule.c (pattern_search): Fixed a bug which made it make the
    `also_make' member of the file in question nil if the first of
    the successful rule's targets was the matching one.
    Made it use only as much storage as necessary in the `also_make'
    member.
    (create_pattern): Made it use only as much storage as necessary in
    the `lens' and `suffixes' members of the created rule.

    * remake.c (library_file_mtime): Made it `static'.

    * file.c: Added a declaration for `errno', which is declared in some
    <errno.h>'s, but not all.

    * file.h (struct file): Added `also_make' member for multiple-target
    implicit rules.
    * rule.c (pattern_search): Made it put the names of files updated by
    the given file's commands in its `also_make' member.
    * remake.c (update_file_1): Made it mark the files in a file's
    `also_make' member as updated when the file is updated.

    * variable.c (try_variable_definition): Fixed a bug which made it
    define a variable with the name of the whole definition when there
    was no space before the = or :=.

    * make.texinfo (Features): Made the changes which were made in RCS
    revision 2.7 but somehow lost since then.  Added -W.

Tue Aug  9 10:04:50 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * variable.h: Added `o_default' to `enum variable_origin'.
    * variable.c (print_variable_data_base): Made it print the origins of
    the variables.
    * rule.c (install_default_pattern_rules): Made it define the default
    variables with origin `o_default'.

    * make.texinfo: Documented -W.

    * make.c (decode_switches, main): Added the -W flag to give files a
    time-stamp of now, for a `what if' effect when used with -n.

    * commands.c (print_commands): Made it say `(built-in)' for commands
    that are built into the default ruleset.

    * read.c (record_file): Made .SUFFIXES get its deps frontwards (again).
    * rule.c (set_default_suffixes, convert_to_pattern): Made it read
    .SUFFIXES's deps frontwards, so the converted rules will not be in
    reverse order.

    * rule.c (new_pattern_rule): Fixed a bug wherein it would keep
    searching after it had removed a matching rule and ended up diddling
    with freed storage.

    * rule.c (freerule): Made it take the given rule off the chain.
    (new_pattern_rule, count_implicit_rule_limits): Use freerule to
    remove rules from the chain.

    * vpath.c (construct_vpath_list): Made it return after cleaning out
    all previous searchpaths when given a nil DIRPATH arg, so it won't
    go into the construction code and dump core dereferencing a nil
    pointer.

    * variable.c (patsubst_expand): Fixed a bug which made it not match
    correctly and sometimes dump core.

Mon Aug  8 16:35:48 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * rule.c (default_suffix_rules): Made the .texinfo.dvi rule remove
    the files used in the comparison to determine whether or not a
    second TeX run is necessary.

    * make.texinfo: Fixed some overfull TeX hboxes.

    * make.texinfo (Implicit: Catalogue of Rules): Fixed a Texinfo error.

    * rule.c (create_pattern_rule): Fixed bug wherein index was not
    being passed its second arg.

    * read.c (getline): Merged back into readline.

    * rule.c (default_suffixes, default_suffix_rules,
    default_variables): Added .texinfo.info rule.
    * make.texinfo (Implicit: Catalogue of Rules): Documented
    .texinfo.dvi and .texinfo.info rules.

    * make.texinfo (Top): Changed `last updated' date to be correct (for
    the last time it was updated, not today).  Changed `for version
    3.00' since it's not going to be called that.

Sat Aug  6 19:51:10 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * commands.c (print_commands): Added this function to print the
    contents of a `struct commands' for -p.
    * rule.c (print_rule_data_base): Use above.
    * file.c (print_file_data_base): Ditto.

    * rule.c (count_implicit_rule_limits, new_pattern_rule,
    install_pattern_rule, print_rule_data_base): Made it understand the
    changed `struct rule' and act accordingly.
    (freerule): Added this function to free all the storage used by a rule.

    * rule.c (pattern_search): Made it grok multiple targets of pattern
    rules.  The matching is done properly, but at present, only the
    matching pattern's target is used to give deps and commands.

Fri Aug  5 18:00:29 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * rule.c (struct rule): Changed name, namelen, and patsuffix members
    to targets, lens, and suffixes, which are arrays, for multiple targets.
    (create_pattern_rule): Now takes first arg TARGETS, a nil-terminated
    array of targets, rather than a single target and patsuffix pointer.

    * read.c (record_files): If it finds an implicit pattern rule, it
    collects all the targets into an array and passes the whole thing to
    create_pattern_rule.  If there are non-pattern targets, it is a
    fatal error.

Tue Aug  2 15:06:38 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * make.c (readline): Split backslash-newline checking from reading
    and buffer-expanding.
    (getline): Created to do the reading and buffer-expanding formerly
    done in readline.

    * rule.c (pattern_search): Made it reject nonterminal match-anything
    rules when a specific rule has matched, rather than rejecting
    terminal match-anything rules in this case.

    * rule.c (convert_to_pattern): Fixed a bug caused when the change to
    make it only recognize two-suffix rules whose target suffixes
    precede their dependency suffixes which made it work in the opposite
    direction (even worse than it started out).

    * rule.c (pattern_search): Made it reject nonterminal match-anything
    rules as intermediate targets when searching for both real and
    intermediate dependencies, rather than only when searching for
    intermediate ones.

Sun Jul 31 00:33:56 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * rule.c (convert_to_pattern): Made it only recognize two-suffix
    rules whose target suffix comes before the dependency suffix in the
    .SUFFIXES list.

    * variable.c (define_automatic_variables): Made all automatic
    variables be defined with origin `o_automatic'.

    * variable.h: Added `o_automatic' to `enum variable_origin'

    * file.c (remove_intermediates): Made it not print an error message
    if the error was that the file does not exist.

    * rule.c: Removed `recursive' member from `struct rule'.

    * remake.c (library_file_mtime): Made it not use the directory hash
    functions, as reading in and hashing /usr/lib and /lib is slow and
    most likely unnecessary.

    * remake.c (remake_file): Changed message from ``No specification
    for making'' to ``No way to make'' so it will be short enough that
    most filenames will fit on a line.
    Made it look at the `recursive' member of the `struct commands',
    rather than of the `struct file' (which no longer has one).

    * commands.c (execute_file_commands): Made it look at the
    `recursive' member of the `struct commands', rather than of the
    `struct file' (which no longer has one).

    * file.h: Removed `recursive' member from `struct file'.

    * commands.h: Added `recursive' member to `struct commands'.

    * dep.h: Removed unused `quotedparen' member from `struct nameseq'
    and `struct dep'.

    * read.c (dequote): Removed this function.
    (multi_glob): Removed reference to `quotedparen' member of
    a `struct nameseq' and calls to dequote.

    * read.c (record_files): Made it set the stem for $* for all static
    pattern rules, not just those with commands given at that time.
    Removed check for recursive commands.
    Made it check for pairs of .SUFFIXES dependencies to reject as
    default goals as well as single ones (that don't start with dots).
    (read_makefile): Added checks for recursive commands to set
    the `recursive' flag in the `struct commands'.

Sat Jul 30 15:47:23 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * make.c (find_next_token): Made the LENGTHPTR arg optionally nil.

    * make.c: Removed `files_made' variable which is defined static in
    remake.c and used only there.
    (main): Cleaned up somewhat.
    (decode_switches): Cleaned up a bit.  Made an unknown option be a
    non-fatal error.
    (decode_env_switches): Made LEN arg unsigned.  Cleaned up.
    (print_version): Made it say ``see the source'' rather than ``see
    the source file'', since there is more than one.

    * file.h: Made `num_intermediates' declared unsigned.

    * file.c: Made `num_intermediates' variable unsigned.
    (remove_intermediates): Removed unused FORMAT arg.
    (enter_file): Made it handle double-colon files properly, adding the
    new entry as the old entry's prev pointer.

    * dir.c: Re-indented the `struct dir' definition to be right.
    (dir_load): Cleaned up slighty.
    (file_exists_p): Removed comment saying we could use `access', since
    that is a bad idea (except for setuid programs).  Cleaned up slightly.

    * commands.c: Changed some comments slightly.
    (execute_file_commands): Cleaned up a bit.  Changed some comments,
    added others.  Moved freeing of storage for $^ and $? to the same
    place as for the other automatic variables.
    (execute_command_line): Made `#' trigger a shell.
    Added some comments.  Cleaned up a bit.  Put all the special chars
    that trigger shells into an array easily changeable at the top.

    * ar.c: Added comments explaining each function.
    (ar_scan_1): Merged into ar_member_date.
    (ar_member_date): Changed call to ar_scan_1 to the body of that
    function.
    (ar_member_date_1): Simplified to a ?: expression rather than an
    if-else statement.
    (ar_member_touch): Changed error handling around a bit.
    None of these errors are fatal now.

    * variable.c (subst_expand): Added a new arg BY_WORD, to do substs
    only on full words.
    (patsubst_expand): Fixed bug which made calls whose patterns
    contained no `%' to not work correctly, by using above.
    (variable_expand): Pass extra arg to `subst_expand'.

    * variable.c (expand_function): Fixed bug which made `foreach' calls
    with one-word lists run off into never-never land.

Fri Jul 29 20:12:36 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * variable.c (expand_function): Made a very minor speed improvement
    by avoiding an unnecessary strlen call.

Wed Jul 27 16:01:47 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * rule.c (default_suffixes): Rearranged the list somewhat; added
    `.el' and `.elc' to speed things up (especially when building
    Emacs), for the same reason `.h' is there.

    * read.c (record_files): Changed `lineno' from `long' to
    `unsigned int'.

Sun Jul 24 02:15:30 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * variable.c (expand_function): Eliminated use of `wstok'
    because it is non-reentrant and unreliable.
    Fixed a minor bug which would cause something not to be freed.
    * make.c (wstok): Removed `wstok' because it is no longer used.

    * variable.c (expand_function): Made `foreach' function put
    spaces between output texts like it's supposed to.

Sat Jul 23 17:32:55 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * rule.c (default_suffixes, default_suffix_rules): Added rule
    to make %.dvi from %.texinfo.

    * dir.c (print_dir_data_base): Made it say a bit more.

Fri Jul 22 23:13:16 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * make.c (print_data_base): Split this function up into one
    for each thing.
    * variable.c (print_variable_data_base): One of the above.
    * rule.c (print_rule_data_base): Ditto.
    * file.c (print_file_data_base): Ditto.
    * dir.c (print_dir_data_base): Ditto.

    * rule.c (install_pattern_rule): Fixed a bug which caused the
    terminal and recursive flags to always be zero for rules
    entered by this function.

    * make.texinfo (Rules: Double-colon): Added a paragraph
    explaining the purpose of double-colon rules.

    * make.texinfo (Implicit: Catalogue of Rules): Updated to
    reflect new C++, TeX, Web, and Texinfo rules.  Other slight
    editorial changes.

    * commands.c (execute_file_commands): Fixed a bug wherein
    random memory could get written for files with no deps.

Wed Jul 20 19:30:31 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * read.c (readline): Fix bug wherein it would not recognize a
    backslash-newline if the buffer filled up and was enlarged
    right before reading the newline.

Tue Jul 19 19:55:02 1988  Roland McGrath  (mcgrath at chilli.Berkeley.EDU)

    * read.c: Added default suffix rules for .cc (using $(C++),
    which defaults to `g++', and $(C++FLAGS)), .tex, .dvi, .web
    and .cweb (using $(TEX), $(WEAVE), $(TANGLE), $(CWEAVE) and
    $(CTANGLE)).

Sat Jul 16 21:24:28 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * Made error formats use %u rather than %ld for line numbers,
    which are now unsigned int's rather than long's.

    * read.c (conditional_line): Fixed some bugs caused by use of
    unsigned int rather than int in one place.

    * read.c (conditional_line): Put the info about active
    conditionals in a struct.
    (read_makefile): Make a new struct of info about conditionals
    for included makefiles and restore the old one after the
    included makefile has been read.

    * read.c (read_makefile): Don't try to read a makefile with
    name "" after giving an error message because an `include'
    directive gave no filename.

    * read.c (read_makefile): Give an error message for
    non-whitespace text after the filename in an `include' directive.

    * make.c (error): Take five args, like `fatal'.  It managed to
    lose with only two.  Is there a better way to do this without vfprintf?

    * read.c (read_makefile): Commands consisting of only
    whitespace are not the same as no commands.  I thought I'd
    fixed this bug months ago; it seems to have come back.

    * make.c (collapse_continuations): All whitespace around a
    backslash-newline combination is turned into a single space.

    * Added COPYING file and copyright notices to all files.

    * make.texinfo (Running: Goals): Fix a typo.

    * read.c (do_define): Take an arg for the origin of the
    variable being defined.
    (read_makefile): Grok `override define'.

    * make.texinfo (Variables: Override Directive, Defining):
    Document the `override define' combination directive.

    * ar.c (ar_member_date): Make a 0 return from `ar_scan' return
    (time_t) -1 (nonexistent file), rather than (time_t) 0, which,
    when put in the `struct file', makes `file_mtime' try to get
    the mtime over and over again.

    * variable.c (pattern_matches): Fix a bug that made patterns
    not beginning with `%' never match.

Fri Jul 15 21:01:44 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

    * Took Make out of RCS.

    * Split the monolithic `make.c' into several smaller files.

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