home *** CD-ROM | disk | FTP | other *** search
- Major changes in release 2.10:
-
- * Bug fixes.
- * The cache variable names used by `AC_CHECK_LIB(LIB, FUNC, ...)' has
- changed: now $ac_cv_lib_LIB_FUNC, previously $ac_cv_lib_LIB.
-
- Major changes in releases 2.6 through 2.9:
-
- * Bug fixes.
-
- Major changes in release 2.5:
-
- * New configure options --bindir, --libdir, --datadir, etc., with
- corresponding output variables.
- * New macro: AC_CACHE_CHECK, to make using the cache easier.
- * config.log contains the command being run as well as any output from it.
- * AC_CHECK_LIB can check for libraries with "." or "/" or "+" in their name.
- * AC_PROG_INSTALL doesn't cache a path to install-sh, for sharing caches.
- * AC_CHECK_PROG, AC_PATH_PROG, AC_CHECK_PROGS, AC_PATH_PROGS, and
- AC_CHECK_TOOL can search a path other than $PATH.
- * AC_CHECK_SIZEOF takes an optional size to use when cross-compiling.
-
- Major changes in release 2.4:
-
- * Fix a few bugs found by Emacs testers.
-
- Major changes in release 2.3:
-
- * Fix the cleanup trap in several ways.
- * Handle C compilers that are picky about option placement.
- * ifnames gets the version number from the right directory.
-
- Major changes in release 2.2:
-
- * The ifnames utility is much faster but requires a "new awk" interpreter.
- * AC_CHECK_LIB and AC_HAVE_LIBRARY check and add the new
- library before existing libs, not after, in case it uses them.
- * New macros: AC_FUNC_GETPGRP, AC_CHECK_TOOL.
- * Lots of bug fixes.
- * Many additions to the TODO file :-)
-
- Major changes in release 2.1:
-
- * Fix C++ problems.
- * More explanations in the manual.
- * Fix a spurious failure in the testsuite.
- * Clarify some warning messages.
- * autoreconf by default only rebuilds configure and config.h.in files
- that are older than any of their particular input files; there is a
- --force option to use after installing a new version of Autoconf.
-
- Thanks to everybody who's submitted changes and additions to Autoconf!
- I've incorporated many of them, and am still considering others for
- future releases -- but I didn't want to postpone this release indefinitely.
-
- Caution: don't indiscriminately rebuild configure scripts with
- Autoconf version 2. Some configure.in files need minor adjustments to
- work with it; the documentation has a chapter on upgrading. A few
- configure.in files, including those for GNU Emacs and the GNU C
- Library, need major changes because they relied on undocumented
- internals of version 1. Future releases of those packages will have
- updated configure.in files.
-
- It's best to use GNU m4 1.3 (or later) with Autoconf version 2.
- Autoconf now makes heavy use of m4 diversions, which were implemented
- inefficiently in GNU m4 releases before 1.3.
-
- Major changes in release 2.0:
-
- ** New copyright terms:
- * There are no restrictions on distribution or use of configure scripts.
-
- ** Documentation:
- * Autoconf manual is reorganized to make information easier to find
- and has several new indexes.
- * INSTALL is reorganized and clearer and is now made from Texinfo source.
-
- ** New utilities:
- * autoscan to generate a preliminary configure.in for a package by
- scanning its source code for commonly used nonportable functions,
- programs, and header files.
- * ifnames to list the symbols used in #if and #ifdef directives in a
- source tree.
- * autoupdate to update a configure.in to use the version 2 macro names.
- * autoreconf to recursively remake configure and configuration header
- files in a source tree.
-
- ** Changed utilities:
- * autoheader can take pieces of acconfig.h to replace config.h.{top,bot}.
- * autoconf and autoheader can look for package-local definition files
- in an alternate directory.
-
- ** New macros:
- * AC_CACHE_VAL to share results of tests between configure runs.
- * AC_DEFUN to define macros, automatically AC_PROVIDE them, and ensure
- that macros invoked with AC_REQUIRE don't interrupt other macros.
- * AC_CONFIG_AUX_DIR, AC_CANONICAL_SYSTEM, AC_CANONICAL_HOST, AC_LINK_FILES to
- support deciding unguessable features based on the host and target types.
- * AC_CONFIG_SUBDIRS to recursively configure a source tree.
- * AC_ARG_PROGRAM to use the options --program-prefix,
- --program-suffix, and --program-transform-name to change the names
- of programs being installed.
- * AC_PREFIX_DEFAULT to change the default installation prefix.
- * AC_TRY_COMPILE to compile a test program without linking it.
- * AC_CHECK_TYPE to check whether sys/types.h or stdlib.h defines a given type.
- * AC_CHECK_LIB to check for a particular function and library.
- * AC_MSG_CHECKING and AC_MSG_RESULT to print test results, on a single line,
- whether or not the test succeeds. They obsolete AC_CHECKING and AC_VERBOSE.
- * AC_SUBST_FILE to insert one file into another.
- * AC_FUNC_MEMCMP to check whether memcmp is 8-bit clean.
- * AC_FUNC_STRFTIME to find strftime even if it's in -lintl.
- * AC_FUNC_GETMNTENT to find getmntent even if it's in -lsun or -lseq.
- * AC_HEADER_SYS_WAIT to check whether sys/wait.h is POSIX.1 compatible.
-
- ** Changed macros:
- * Many macros renamed systematically, but old names are accepted for
- backward compatibility.
- * AC_OUTPUT adds the "automatically generated" comment to
- non-Makefiles where it finds @configure_input@ in an input file, to
- support files with various comment syntaxes.
- * AC_OUTPUT does not replace "prefix" and "exec_prefix" in generated
- files when they are not enclosed in @ signs.
- * AC_OUTPUT allows the optional environment variable CONFIG_STATUS to
- override the file name "config.status".
- * AC_OUTPUT takes an optional argument for passing variables from
- configure to config.status.
- * AC_OUTPUT and AC_CONFIG_HEADER allow you to override the input-file names.
- * AC_OUTPUT automatically substitutes the values of CFLAGS, CXXFLAGS,
- CPPFLAGS, and LDFLAGS from the environment.
- * AC_PROG_CC and AC_PROG_CXX now set CFLAGS and CXXFLAGS, respectively.
- * AC_PROG_INSTALL looks for install-sh or install.sh in the directory
- specified by AC_CONFIG_AUXDIR, or srcdir or srcdir/.. or
- srcdir/../.. by default.
- * AC_DEFINE, AC_DEFINE_UNQUOTED, and AC_SUBST are more robust and smaller.
- * AC_DEFINE no longer prints anything, because of the new result reporting
- mechanism (AC_MSG_CHECKING and AC_MSG_RESULT).
- * AC_VERBOSE pays attention to --quiet/--silent, not --verbose.
- * AC_ARG_ENABLE and AC_ARG_WITH support whitespace in the arguments to
- --enable- and --with- options.
- * AC_CHECK_FUNCS and AC_CHECK_HEADERS take optional shell commands to
- execute on success or failure.
- * Checking for C functions in C++ works.
-
- ** Removed macros:
- * AC_REMOTE_TAPE and AC_RSH removed; too specific to tar and cpio, and
- better maintained with them.
- * AC_ARG_ARRAY removed because no one was likely using it.
- * AC_HAVE_POUNDBANG replaced with AC_SYS_INTERPRETER, which doesn't
- take arguments, for consistency with all of the other specific checks.
-
- ** New files:
- * Comes with config.sub and config.guess, and uses them optionally.
- * Uses config.cache to cache test results. An alternate cache file
- can be selected with the --cache-file=FILE option.
- * Uses optional shell scripts $prefix/share/config.site and
- $prefix/etc/config.site to perform site or system specific initializations.
- * configure saves compiler output to ./config.log for debugging.
- * New files autoconf.m4 and autoheader.m4 load the other Autoconf macros.
- * acsite.m4 is the new name for the system-wide aclocal.m4.
- * Has a DejaGnu test suite.
-
- Major changes in release 1.11:
-
- * AC_PROG_INSTALL calls install.sh with the -c option.
- * AC_SET_MAKE cleans up after itself.
- * AC_OUTPUT sets prefix and exec_prefix if they weren't set already.
- * AC_OUTPUT prevents shells from looking in PATH for config.status.
-
- Plus a few other bug fixes.
-
- Major changes in release 1.10:
-
- * autoheader uses config.h.bot if present, analogous to config.h.top.
- * AC_PROG_INSTALL looks for install.sh in srcdir or srcdir/.. and
- never uses cp.
- * AC_PROG_CXX looks for cxx as a C++ compiler.
-
- Plus several bugs fixed.
-
- Major changes in release 1.9:
-
- * AC_YYTEXT_POINTER replaces AC_DECLARE_YYTEXT.
- * AC_SIZEOF_TYPE generates the cpp symbol name automatically,
- and autoheader generates entries for those names automatically.
- * AC_FIND_X gets the result from xmkmf correctly.
- * AC_FIND_X assumes no X if --without-x was given.
- * AC_FIND_XTRA adds libraries to the variable X_EXTRA_LIBS.
- * AC_PROG_INSTALL finds OSF/1 installbsd.
-
- Major changes in release 1.8:
-
- ** New macros:
- * New macros AC_LANG_C, AC_LANG_CPLUSPLUS, AC_LANG_SAVE, AC_LANG_RESTORE,
- AC_PROG_CXX, AC_PROG_CXXCPP, AC_REQUIRE_CPP
- for checking both C++ and C features in one configure script.
- * New macros AC_CHECKING, AC_VERBOSE, AC_WARN, AC_ERROR for printing messages.
- * New macros AC_FIND_XTRA, AC_MMAP, AC_SIZEOF_TYPE, AC_PREREQ,
- AC_SET_MAKE, AC_ENABLE.
-
- ** Changed macros:
- * AC_FIND_X looks for X in more places.
- * AC_PROG_INSTALL defaults to install.sh instead of cp, if it's in srcdir.
- install.sh is distributed with Autoconf.
- * AC_DECLARE_YYTEXT has been removed because it can't work, pending
- a rewrite of quoting in AC_DEFINE.
- * AC_OUTPUT adds its comments in C format when substituting in C files.
- * AC_COMPILE_CHECK protects its ECHO-TEXT argument with double quotes.
-
- ** New or changed command line options:
- * configure accepts --enable-FEATURE[=ARG] and --disable-FEATURE options.
- * configure accepts --without-PACKAGE, which sets withval=no.
- * configure accepts --x-includes=DIR and --x-libraries=DIR.
- * Giving --with-PACKAGE no argument sets withval=yes instead of withval=1.
- * configure accepts --help, --version, --silent/--quiet, --no-create options.
- * configure accepts and ignores most other Cygnus configure options, and
- warns about unknown options.
- * config.status accepts --help, --version options.
-
- ** Paths and other changes:
- * Relative srcdir values are not made absolute.
- * The values of @prefix@ and @exec_prefix@ and @top_srcdir@ get substituted.
- * Autoconf library files are installed in ${datadir}/autoconf, not ${datadir}.
- * autoheader optionally copies config.h.top to the beginning of config.h.in.
- * The example Makefile dependencies for configure et al. work better.
- * Namespace cleanup: all shell variables used internally by Autoconf
- have names beginning with `ac_'.
-
- More big improvements are in process for future releases, but have not
- yet been (variously) finished, integrated, tested, or documented enough
- to release yet.
-
- Major changes in release 1.7:
-
- * New macro AC_OBSOLETE.
- * Bugs in Makefile.in fixed.
- * AC_LONG_FILE_NAMES improved.
-
- Major changes in release 1.6:
-
- * New macro AC_LONG_64_BITS.
- * Multiple .h files can be created.
- * AC_FIND_X looks for X files directly if it doesn't find xmkmf.
- * AC_ALLOCA defines C_ALLOCA if using alloca.c.
- * --with-NAME can take a value, e.g., --with-targets=sun4,hp300bsd.
- * Unused --no-create option to configure removed.
- * autoheader doesn't change the timestamp of its output file if
- the file didn't change.
- * All macros that look for libraries now use AC_HAVE_LIBRARY.
- * config.status checks three optional environment variables to
- modify its behavior.
- * The usual bug fixes.
-
- Major changes in release 1.5:
-
- * New macros AC_FIND_X, AC_OFF_T, AC_STAT_MACROS_BROKEN, AC_REVISION.
- * autoconf and autoheader scripts have GNU standards conforming
- --version and --help options (they print their message and exit).
- * Many bug fixes.
-
- Major changes in release 1.4:
-
- * New macros AC_HAVE_POUNDBANG, AC_TIME_WITH_SYS_TIME, AC_LONG_DOUBLE,
- AC_GETGROUPS_T, AC_DEFINE_UNQUOTED.
- * autoconf and autoheader use the M4 environment variable to determine the
- path of the m4 program to use.
- * The --macrodir option to autoconf and autoheader specifies the directory
- in which acspecific.m4, acgeneral.m4, etc. reside if not the default.
- * autoconf and autoheader can take `-' as their file names, which means to
- read stdin as input.
- * Resulting configure scripts can take a --verbose option which causes them
- to print the results of their tests.
- * AC_DEFINE quotes its second argument in such a way that spaces, magic
- shell characters, etc. will be preserved during various stages of
- expansion done by the shell. If you don't want this, use
- AC_DEFINE_UNQUOTED instead.
- * Much textual processing done with external calls to tr and sed have been
- internalized with builtin m4 `patsubst' and `translit' calls.
- * AC_OUTPUT doesn't hardwire the filenames it outputs. Instead, you can
- set the shell variables `gen_files' and `gen_config' to the list of
- filenames to output.
- * AC_DECLARE_YYTEXT does an AC_SUBST of `LEX_OUTPUT_ROOT', which may be
- "lex.yy" or "lexyy", depending on the system.
- * AC_PROGRAMS_CHECK takes an optional third arg. If given, it is used as
- the default value.
- * If AC_ALLOCA chooses alloca.c, it also defines STACK_DIRECTION.
- * AC_CONST works much more reliably on more systems.
- * Many bug fixes.
-
- Major changes in release 1.3:
-
- configure no longer requires awk for packages that use a config.h.
- Support handling --with-PACKAGE options.
- New `autoheader' script to create `config.h.in' from `configure.in'.
- Ignore troublesome -lucb and -lPW when searching for alloca.
- Rename --exec_prefix to --exec-prefix for GNU standards conformance.
- Improve detection of STDC library.
- Add AC_HAVE_LIBRARY to check for non-default libraries.
- Function checking should work with future GNU libc releases.
-
- Major changes in release 1.2:
-
- The --srcdir option is now usually unnecessary.
- Add a file containing sample comments describing CPP macros.
- A comment in config.status tells which host it was configured on.
- Substituted variable values can now contain commas.
- Fix bugs in various feature checks.
-
- Major changes in release 1.1:
-
- Added AC_STRCOLL macro.
- Made AC_GETLOADAVG check for more things.
- AC_OUTPUT argument is now optional.
- Various bug fixes.
-