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- # Copyright (C) 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
- # This file is part of the GNU C Library.
-
- # The GNU C Library is free software; you can redistribute it and/or
- # modify it under the terms of the GNU Library General Public License as
- # published by the Free Software Foundation; either version 2 of the
- # License, or (at your option) any later version.
-
- # The GNU C Library is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- # Library General Public License for more details.
-
- # You should have received a copy of the GNU Library General Public
- # License along with the GNU C Library; see the file COPYING.LIB. If
- # not, write to the Free Software Foundation, Inc., 675 Mass Ave,
- # Cambridge, MA 02139, USA.
-
- #
- # Common rules for making the GNU C library. This file is included
- # by the top-level Makefile and by all subdirectory makefiles
- # (through Rules).
- #
- ifneq (,)
- This makefile requires GNU Make.
- endif
-
-
- ifdef subdir
- .. := ../
- endif # subdir
-
- # If `sources' was defined by the parent makefile, undefine it so
- # we will later get it from wildcard search in this directory.
- ifneq "$(findstring env,$(origin sources))" ""
- sources :=
- endif
-
- headers := $(headers) $(sysdep_headers)
-
- oPATH := $(PATH)
- PATH := this definition should take precedence over $(oPATH)
- ifeq ($(PATH),$(oPATH))
- You must not use the -e flag when building the GNU C library.
- else
- PATH := $(oPATH)
- endif
-
- ifndef +included-Makeconfig
- include $(..)Makeconfig
- endif
-
- # `configure' writes a definition of `config-sysdirs' in `config.make'.
- sysdirs = $(config-sysdirs)
-
- +sysdir_pfx = $(common-objpfx)
-
- export sysdirs := $(sysdirs)
-
- +sysdep_dirs := $(addprefix $(sysdep_dir)/,$(sysdirs))
- ifdef objdir
- +sysdep_dirs := $(objdir) $(+sysdep_dirs)
- endif
-
- # Add -I switches to get the right sysdep directories.
- # `+includes' in Makeconfig references $(+sysdep-includes).
- +sysdep-includes := $(addprefix -I,$(+sysdep_dirs))
-
- # Include any system-specific makefiles.
-
- # This is here so things in sysdep Makefiles can easily depend on foo.h as
- # appropriate and not worry about where foo.h comes from, which may be
- # system dependent and not known by that Makefile.
- vpath %.h $(subst $(empty) ,:,$(strip $(common-objpfx) \
- $(addprefix $(sysdep_dir)/,$(sysdirs)) \
- $(..)))
-
- ifeq ($(wildcard $(+sysdir_pfx)sysd-Makefile),)
- # Don't do deps until this exists, because it might change the sources list.
- no_deps=t
- endif
-
- # Some sysdep makefiles use this to distinguish being included here from
- # being included individually by a subdir makefile (hurd/Makefile needs this).
- in-Makerules := yes
-
- include $(+sysdir_pfx)sysd-Makefile
- $(+sysdir_pfx)sysd-Makefile: $(+sysdir_pfx)config.make $(..)Makerules
- -@rm -f $@T
- (for dir in $(sysdirs); do \
- file=sysdeps/$$dir/Makefile; \
- if [ -f $(..)$$file ]; then \
- echo include "\$$(..)$$file"; \
- else true; fi; \
- done; \
- echo 'sysd-Makefile-done=t') > $@T
- mv -f $@T $@
-
-
- # Reorder before-compile so that mach things come first, and hurd things
- # second, before all else. The mach and hurd subdirectories have many
- # generated header files which the much of rest of the library depends on,
- # so it is best to build them first (and mach before hurd, at that).
- before-compile := $(filter $(common-objpfx)mach% $(common-objpfx)hurd%,\
- $(before-compile)) \
- $(filter-out $(common-objpfx)mach% $(common-objpfx)hurd%,\
- $(before-compile))
-
- # Remove existing files from `before-compile'. Things are added there when
- # they must exist for dependency generation to work right, but once they
- # exist there is no further need for every single file to depend on them,
- # and those gratuitous dependencies result in many gratuitous
- # recompilations.
- before-compile := $(filter-out $(wildcard $(before-compile)),$(before-compile))
-
- # Don't let any before-compile file be an intermediate and get removed.
- ifdef before-compile
- $(before-compile):
- endif
-
- # Generate an ordered list of implicit rules which find the source files in
- # each sysdep directory. The old method was to use vpath to search all the
- # sysdep directories. However, that had the problem that a .S file in a
- # later directory would be chosen over a .c file in an earlier directory,
- # which does not preserve the desired sysdeps ordering behavior.
-
- # When making the list of .d files to include, we can't know which ones
- # have source in .s files, and thus do not in fact need a .d file.
- # So we must define rules to make .d files for .s files.
- define make-dummy-dep
- $(addprefix ln $(objpfx)dummy.d ,$(filter-out $(wildcard $@),$@))
- endef
- $(objpfx)dummy.d:
- echo '# .s files cannot contain includes, so they need no deps.' > $@
-
- # It matters that this set of rules, for compiling from sources in
- # the current directory (the $srcdir/$subdir) come before the
- # generated sysdep rules in included from sysd-rules below. When
- # compiling in the source tree, generated sources go into the current
- # directory, and those should be chosen before any sources in sysdeps.
- $(objpfx)%.o: %.S $(before-compile); $(compile-command.S)
- $(objpfx)%.d: %.S $(before-compile); $(+make-deps)
- $(objpfx)%.o: %.s $(before-compile); $(compile-command.s)
- $(objpfx)%.d: %.s $(objpfx)dummy.d; $(make-dummy-dep)
- $(objpfx)%.o: %.c $(before-compile); $(compile-command.c)
- $(objpfx)%.d: %.c $(before-compile); $(+make-deps)
-
- # Omit the objpfx rules when building in the source tree, because
- # objpfx is empty and so these rules just override the ones above.
- ifdef objpfx
- # Define first rules to find the source files in $(objpfx).
- # Generated source files will end up there.
- $(objpfx)%.o: $(objpfx)%.S $(before-compile); $(compile-command.S)
- $(objpfx)%.d: $(objpfx)%.S $(before-compile); $(+make-deps)
- $(objpfx)%.o: $(objpfx)%.s $(before-compile); $(compile-command.s)
- $(objpfx)%.d: $(objpfx)%.s $(objpfx)dummy.d; $(make-dummy-dep)
- $(objpfx)%.o: $(objpfx)%.c $(before-compile); $(compile-command.c)
- $(objpfx)%.d: $(objpfx)%.c $(before-compile); $(+make-deps)
- endif
-
- # System-dependent makefiles can put in `inhibit-sysdep-asm' wildcard
- # patterns matching sysdep directories whose assembly source files should
- # be suppressed.
- ifdef inhibit-sysdep-asm
- define open-check-inhibit-asm
- case $$sysdir in $(subst $(empty) ,|,$(inhibit-sysdep-asm))) : ;; *)
- endef
- close-check-inhibit-asm = ;; esac
- endif
-
- # Don't include sysd-rules until sysd-Makefile is already there and has been
- # included. It might define inhibit-sysdep-asm, which would affect the
- # contents of sysd-rules.
- ifdef sysd-Makefile-done
- include $(+sysdir_pfx)sysd-rules
- endif
- $(+sysdir_pfx)sysd-rules: $(+sysdir_pfx)config.make $(..)Makerules \
- $(wildcard $(foreach dir,$(sysdirs),\
- $(sysdep_dir)/$(dir)/Makefile))
- -@rm -f $@T
- (for sysdir in $(sysdirs); do \
- dir="\$$(sysdep_dir)/$$sysdir"; \
- $(open-check-inhibit-asm) \
- echo "\$$(objpfx)%.o: $$dir/%.S \$$(before-compile); \
- \$$(compile-command.S)"; \
- echo "\$$(objpfx)%.d: $$dir/%.S \$$(before-compile); \
- \$$(+make-deps)"; \
- echo "\$$(objpfx)%.o: $$dir/%.s \$$(before-compile); \
- \$$(compile-command.s)"; \
- echo "\$$(objpfx)%.d: $$dir/%.s \$$(objpfx)dummy.d; \
- \$$(make-dummy-dep)" $(close-check-inhibit-asm); \
- echo "\$$(objpfx)%.o: $$dir/%.c \$$(before-compile); \
- \$$(compile-command.c)"; \
- echo "\$$(objpfx)%.d: $$dir/%.c \$$(before-compile); \
- \$$(+make-deps)"; \
- done) > $@T
- mv -f $@T $@
-
- ifndef compile-command.S
- compile-command.S = $(compile.S) $(OUTPUT_OPTION)
- endif
- ifndef compile-command.s
- compile-command.s = $(COMPILE.s) $< $(OUTPUT_OPTION)
- endif
- ifndef compile-command.c
- compile-command.c = $(compile.c) $(OUTPUT_OPTION)
- endif
-
- ifeq ($(notdir $(firstword $(CC))),gcc)
- # GCC can grok options after the file name, and it looks nicer that way.
- compile.S = $(CC) $< -c $(CPPFLAGS) -DASSEMBLER $(asm-CPPFLAGS)
- compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
- else
- compile.S = $(COMPILE.S) -DASSEMBLER $(asm-CPPFLAGS) $<
- compile.c = $(COMPILE.c) $<
- endif
-
- ifndef OUTPUT_OPTION
- ifdef objpfx
- # We need this for the output to go in the right place. It will default to
- # empty if make was configured to work with a cc that can't grok -c and -o
- # together. You can't compile the C library with such a compiler.
- OUTPUT_OPTION = -o $@
- endif
- endif
-
- S-CPPFLAGS = $(asm-CPPFLAGS)
- define +make-deps
- -@rm -f $@
- $(+mkdep) $< $(CPPFLAGS) $($(<:$*.%=%)-CPPFLAGS) | \
- sed -e 's,$*\.o,$(@:.d=.o) $@,' $(sed-remove-objpfx) > $(@:.d=.T)
- mv -f $(@:.d=.T) $@
- endef
- ifneq (,$(objpfx))
- sed-remove-objpfx = -e 's@ $(subst @,\@,$(objpfx))@ $$(objpfx)@g' \
- -e 's@^$(subst @,\@,$(objpfx))@$$(objpfx)@g'
- endif
-
- # Figure out the source filenames in this directory.
-
- override sources := $(addsuffix .c,$(filter-out $(elided-routines),\
- $(routines) $(aux) \
- $(sysdep_routines)))
- sysdep_routines := $(sysdep_routines)
-
- # This is the list of all object files, gotten by
- # replacing every ".c" in `sources' with a ".o".
- override objects := $(addprefix $(objpfx),$(sources:.c=.o))
-
- +depfiles := $(strip $(sources:.c=.d) \
- $(patsubst %.o,%.d,$(filter %.o,$(extra-objs))) \
- $(addsuffix .d,$(others) $(tests)))
- +depfiles := $(addprefix $(objpfx),\
- $(filter-out $(addsuffix .d,$(omit-deps)),\
- $(+depfiles)))
-
- $(objpfx)depend-$(subdir): Makefile
- ifdef +depfiles
- for file in $(+depfiles:$(objpfx)%=%); do \
- echo "include \$$(objpfx)$$file"; \
- done > $@-tmp
- mv -f $@-tmp $@
- else
- cp /dev/null $@
- endif
-
- ifneq ($(no_deps),t)
- # Include the generated dependencies of the sources in this directory.
- include $(objpfx)depend-$(subdir)
- endif
-
- # Maximize efficiency by minimizing the number of rules.
- .SUFFIXES: # Clear the suffix list.
- # Add the suffixes we use.
- .SUFFIXES: .a .o .S .s .c .h .d
-
- # Generic rule for making directories.
- %/:
- # mkdir isn't smart enough to strip a trailing /.
- mkdir $(@:%/=%)
-
- # Make sure that object files are not removed
- # when they are intermediates between sources and library members.
- # This can go away with make v4.
- .PRECIOUS: %.o
-
- # Make sure that the parent library archive is never removed.
- .PRECIOUS: $(libc.a)
-
- # Use the verbose option of ar and tar when not running silently.
- ifeq "$(findstring s,$(MAKEFLAGS))" "" # if not -s
- verbose := v
- else # -s
- verbose :=
- endif # not -s
-
- ARFLAGS := r$(verbose)
-
- # This makes all the object files in the parent library archive.
-
- .PHONY: lib libobjs lib-noranlib
- $(libc.a): $(libc.a)(__.SYMDEF)
- lib: $(libc.a)
-
- +libobjs := $(patsubst %,$(libc.a)(%),$(notdir $(objects)))
- libobjs: $(+libobjs)
- lib-noranlib: libobjs
-
- # Define a pattern rule that will match many targets libc.%(foo.o), for
- # each foo in $(objects) (% will just happen always to match `a'). This is
- # the only way to define a rule that updates many targets at once with one
- # sequence of commands.
- ifdef objects
- $(patsubst %,$(libc.a:a=)\%(%),$(notdir $(objects))): $(objpfx)stamp-$(subdir);
- $(objpfx)stamp-$(subdir): $(objects)
- # $(+libc_lock_open)
- ifdef objdir
- cd $(objdir); $(AR) cru$(verbose) libc.a $(patsubst $(objpfx)%,%,$^)
- else
- $(AR) cru$(verbose) $(..)libc.a $^
- endif
- # $(+libc_lock_close)
- touch $@
- endif
-
- $(libc.a)(__.SYMDEF): $(+libobjs)
- $(RANLIB) $@
-
- define +libc_lock_open
- @. $(..)libc-lock-open
- endef
- define +libc_lock_close
- @rm -f $(..)LOCK-libc.a
- endef
-
- # This makes all the object files.
- .PHONY: objects objs
- objects objs: $(objects)
-
- # Installation.
-
- # $(install-lib) are installed from the object directory into $(libdir);
- # files in $(install-lib) matching `lib%.a' are ranlib'd after installation
- # unless they also appear in $(non-lib.a). $(install-data) are installed
- # as they are into $(datadir). $(headers) are installed as they are in
- # $(includedir). $(install-bin) and $(install-sbin) are installed from the
- # object directory into $(bindir) and $(sbindir), respectively.
- # $(install-others) are absolute path names of files to install; rules to
- # install them are defined elsewhere.
-
- # The simple library name to install libc.a under.
- # This could be defined by a sysdep Makefile.
- ifndef libc-name
- libc-name := c
- endif
-
- define do-install
- $(make-target-directory)
- $(INSTALL_DATA) $< $@
- endef
-
- # Make the target directory if it doesn't exist. Because of make's
- # directory cache, this will produce the `mkdir' command when the directory
- # already exists, if it didn't exist at the start of the `make' run. The
- # `-' prefix ignores errors from mkdir, so there will just be some
- # gratuitous but harmless `File exists' messages.
- define make-target-directory
- $(addprefix -mkdir ,$(filter-out $(wildcard $(@D:%/=%)),$(@D:%/=%)))
- endef
-
- # Any directory (parent or subdir) that has any object files to build
- # should install libc.a; this way "make install" in a subdir is guaranteed
- # to install everything it changes.
- ifdef objects
- install: $(libdir)/lib$(libprefix)$(libc-name).a
- # We avoid depending on lib-noranlib because that makes the parent make
- # subdir_lib in all the subdirs, when the make install run they do will
- # update the library anyway. Running ranlib after installing makes the
- # __.SYMDEF time stamp up to date, which avoids messages from some linkers.
- # Depending on subdir_install gets all the subdirs to update the library,
- # and is optimal for `make install' at top level.
- $(libdir)/lib$(libprefix)$(libc-name).a: libobjs subdir_install
- $(make-target-directory)
- $(INSTALL_DATA) $(libc.a) $@
- $(RANLIB) $@
- endif
-
- ifdef install-bin
- $(addprefix $(bindir)/,$(install-bin)): $(bindir)/%: $(objpfx)%
- $(make-target-directory)
- $(INSTALL_PROGRAM) $< $@
- endif
- ifdef install-sbin
- $(addprefix $(sbindir)/,$(install-sbin)): $(sbindir)/%: $(objpfx)%
- $(make-target-directory)
- $(INSTALL_PROGRAM) $< $@
- endif
- ifdef install-lib
- install-lib.a := $(filter-out $(non-lib.a),$(filter lib%.a,$(install-lib)))
- install-lib-non.a := $(filter-out lib%.a,$(install-lib)) $(non-lib.a)
- ifdef install-lib-non.a
- $(addprefix $(libdir)/$(libprefix),$(install-lib-non.a)): \
- $(libdir)/$(libprefix)%: $(objpfx)%
- $(do-install)
- endif
- ifdef install-lib.a
- $(install-lib.a:lib%.a=$(libdir)/lib$(libprefix)%.a): \
- $(libdir)/lib$(libprefix)%.a: $(objpfx)lib%.a
- $(do-install)
- $(RANLIB) $@
- endif
- endif
- ifdef install-data
- $(addprefix $(datadir)/,$(install-data)): $(datadir)/%: %;$(do-install)
- endif
- headers := $(strip $(headers))
- ifdef headers
- $(addprefix $(includedir)/,$(headers)): \
- $(includedir)/%: %;$(do-install)
- endif # headers
-
- .PHONY: install-bin-nosubdir install-sbin-nosubdir install-lib-nosubdir \
- install-data-nosubdir install-headers-nosubdir
- install-bin-nosubdir: $(addprefix $(bindir)/,$(install-bin))
- install-sbin-nosubdir: $(addprefix $(sbindir)/,$(install-sbin))
- install-lib-nosubdir: $(addprefix $(libdir)/,\
- $(patsubst lib%.a,lib$(libprefix)%.a,$(install-lib.a)) \
- $(addprefix $(libprefix),$(install-lib-non.a)))
- install-data-nosubdir: $(addprefix $(datadir)/,$(install-data))
- install-headers-nosubdir: $(addprefix $(includedir)/,$(headers))
- install-others-nosubdir: $(install-others)
-
- # We need all the `-nosubdir' targets so that `install' in the parent
- # doesn't depend on several things which each iterate over the subdirs.
- # This rule makes `install-FOO' always use `install-FOO-nosubdir' as a
- # subroutine. Then in the parent `install-FOO' also causes subdir makes.
- install-%:: install-%-nosubdir ;
-
- .PHONY: install install-no-libc.a-nosubdir
- install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir\
- install-bin-nosubdir install-lib-nosubdir \
- install-others-nosubdir install-sbin-nosubdir
- install: install-no-libc.a-nosubdir
-
- # Command to compile $< in $(objdir) using the native libraries.
- define native-compile
- cwd=`pwd`; cd $(@D); $(BUILD_CC) $(BUILD_CFLAGS) \
- $(addprefix $$cwd/,$^) -o $(@F)
- endef
-
- # Command to compile $< in $(common-objdir) using the native libraries.
- define common-objdir-compile
- cd $(@D); $(BUILD_CC) $(BUILD_CFLAGS) $(<:$(common-objpfx)%=%) -o $(@F)
- endef
-
- # We always want to use configuration -D switches.
- BUILD_CFLAGS = $(config-defines)
-
- # Support the GNU standard name for this target.
- .PHONY: check
- check: tests
-
- .PHONY: TAGS
- TAGS: distinfo $(..)MakeTAGS
- $(MAKE) $(addprefix -f ,$^)
-
- .PHONY: echo-headers
- echo-headers:
- @echo $(headers)
-
-
- # Common cleaning targets.
-
- .PHONY: common-mostlyclean common-clean mostlyclean clean
- clean: common-clean
- mostlyclean: common-mostlyclean
-
- # Remove the object files.
- common-mostlyclean:
- -rm -f $(addprefix $(objpfx),$(tests) $(others) \
- $(addsuffix .o,$(tests) $(others)) \
- $(addsuffix .out,$(tests)))
- -rm -f $(objects) $(addprefix $(objpfx),$(extra-objs) stamp-$(subdir))
- -rm -f core TAGS
-
- # Also remove the dependencies and generated source files.
- common-clean: common-mostlyclean
- -rm -f $(objpfx)depend-$(subdir) $(+depfiles)
- -rm -f $(addprefix $(objpfx),$(generated))
-
- # Produce a file `stub-$(subdir)' which contains `#define __stub_FUNCTION'
- # for each function which is a stub. We grovel over all the .d files
- # looking for references to source files in sysdeps/stub. Then we grovel
- # over each referenced source file to see what stub function it defines.
-
- .PHONY: stubs # The parent Makefile calls this target.
- stubs: $(common-objpfx)stub-$(subdir)
- $(common-objpfx)stub-$(subdir): $(+depfiles)
- # Use /dev/null since `...` might expand to empty.
- $(patsubst %,cd %;,$(objdir)) \
- sed -n 's/^stub_warning *(\([^)]*\).*$$/#define __stub_\1/p' \
- `sed -n 's@^.*\($(sysdep_dir)/stub/[a-z0-9_]*\.c\).*$$@\1@p' \
- $(patsubst $(objpfx)%,%,$^) /dev/null` \
- /dev/null > $@T
- mv -f $@T $@
-
- # Make the distribution tar file.
-
- .PHONY: dist
- dist: distinfo $(..)Make-dist
- $(MAKE) -f $< -f $(word 2,$^) $(Make-dist-args)
-
- dist: $(distribute)
-
- # We used to simply export all these variables, but that frequently made the
- # environment get too large. Instead, we write all the information into
- # a generated makefile fragment `distinfo', and then include it with -f in
- # the sub-make that makes the distribution (above).
- distinfo: Makefile $(..)Makerules
- $(distinfo-vars)
- mv -f $@.new $@
-
- define distinfo-vars
- rm -f $@.new
- $(foreach var,subdir sources elided-routines headers distribute \
- dont_distribute generated others tests,
- echo >> $@.new '$(var) := $($(var))')
- echo >> $@.new 'sources := $$(sources) $$(addsuffix .c,$$(elided-routines))'
- endef
-
- ifneq (,$(strip $(gpl2lgpl)))
- ifneq (,$(wildcard $(..)gpl2lgpl.sed))
- # Snarf from the master source and frob the copying notice.
- $(gpl2lgpl): %: $(..)gpl2lgpl.sed /home/gd/gnu/lib/%
- sed -f $^ > $@-tmp
- # So I don't edit them by mistake.
- chmod a-w $@-tmp
- mv -f $@-tmp $@
- endif
- endif
-