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- # Copyright (C) 1991, 1992, 1993 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.
-
- #
- # Propagated rules for making the GNU C library.
- #
- 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)
-
- # This is benign and useless in GNU make before version 3.63.
- export sources := $(sources)
- export headers := $(headers)
-
- ifneq ($(findstring e,$(MAKEFLAGS)),)
- You must not use the -e flag when building the GNU C library.
- endif
-
- ifndef +included-Makeconfig
- include $(..)Makeconfig
- endif
-
- # `configure' writes a definition of `config-sysdirs' in `config.make'.
- sysdirs = $(config-sysdirs)
-
- +sysdir_pfx = $(common-objpfx)
-
- sysdep_dir := $(..)sysdeps
- export sysdirs := $(sysdirs)
- export sysdep_dir := $(sysdep_dir)
-
- +sysdep_dirs := $(addprefix $(sysdep_dir)/,$(sysdirs))
- ifdef objdir
- +sysdep_dirs := $(objdir) $(+sysdep_dirs)
- endif
-
- # Add -I switches to get the right sysdep directories.
- +sysdep-includes := $(addprefix -I,$(+sysdep_dirs))
- +includes := $(+includes) $(+sysdep-includes)
-
- # Include any system-specific makefiles.
- # Also 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.
-
- # 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 $(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
-
- # When making the list of .dep files to include, we can't know which ones
- # have source in .s files, and thus do not in fact need a .dep file.
- # So we must define rules to make .dep files for .s files.
- make-dummy-dep = \
- echo '\# $< cannot contain includes, so it needs no deps.' > $@
-
- # 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)%.dep: $(objpfx)%.S $(before-compile); $(+make-deps)
- $(objpfx)%.o: $(objpfx)%.s $(before-compile); $(compile-command.s)
- $(objpfx)%.dep: $(objpfx)%.s; $(make-dummy-dep)
- $(objpfx)%.o: $(objpfx)%.c $(before-compile); $(compile-command.c)
- $(objpfx)%.dep: $(objpfx)%.c $(before-compile); $(+make-deps)
-
- include $(+sysdir_pfx)sysd-Makefile
- $(+sysdir_pfx)sysd-Makefile: $(+sysdir_pfx)config.make $(..)Makerules
- (for dir in $(sysdirs); do \
- file=sysdeps/$$dir/Makefile; \
- if [ -f $(..)$$file ]; then \
- echo include "\$$(..)$$file"; \
- else true; \
- fi; \
- dir="\$$(sysdep_dir)/$$dir"; \
- echo "\$$(objpfx)%.o: $$dir/%.S \$$(before-compile); \
- \$$(compile-command.S)"; \
- echo "\$$(objpfx)%.dep: $$dir/%.S \$$(before-compile); \
- \$$(+make-deps)"; \
- echo "\$$(objpfx)%.o: $$dir/%.s \$$(before-compile); \
- \$$(compile-command.s)"; \
- echo "\$$(objpfx)%.dep: $$dir/%.s; \$$(make-dummy-dep)"; \
- echo "\$$(objpfx)%.o: $$dir/%.c \$$(before-compile); \
- \$$(compile-command.c)"; \
- echo "\$$(objpfx)%.dep: $$dir/%.c \$$(before-compile); \
- \$$(+make-deps)"; \
- done) > $@
-
- # 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 .dep
-
- # 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)
-
- # Figure out the source filenames in this directory.
-
- override sources := $(addsuffix .c,$(routines) $(aux) \
- $(sysdep_routines))
- export 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))
-
- # The order of these rules is important.
-
- $(objpfx)%.o: %.S $(before-compile); $(compile-command.S)
- $(objpfx)%.o: %.s $(before-compile); $(compile-command.s)
- $(objpfx)%.o: %.c $(before-compile); $(compile-command.c)
-
- 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.
- compile.S = $(CC) $< -c $(CPPFLAGS) $(asm-CPPFLAGS)
- compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
- else
- compile.S = $(COMPILE.S) $(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
-
- # This makes all the object files in the parent library archive.
-
- .PHONY: lib libobjs lib-noranlib
- $(libc.a): lib-noranlib
- $(RANLIB) $@
- lib: $(libc.a)
-
- +libobjs := $(patsubst %,$(libc.a)(%),$(notdir $(objects)))
- ifdef +libobjs
- $(+libobjs): $(libc.a)(%): $(objpfx)%;
- endif
- libobjs: $(+libobjs)
- lib-noranlib: libobjs ar-it
-
- #$(libc.a): %: $(addprefix %,$(patsubst $(objpfx)%,(%),$(objects)))
- # $(AR) $(ARFLAGS) $@ $(patsubst $@(%),%,$?)
-
- define +libc_lock_open
- @. $(..)libc-lock-open
- endef
- define +libc_lock_close
- @rm -f $(..)LOCK-libc.a
- endef
-
- # Temporary until I get a better solution.
- .PHONY: ar-it
- ar-it: $(objects)
- # $(+libc_lock_open)
- ifdef objects
- ifdef objdir
- cd $(objdir); $(AR) cru$(verbose) libc.a $(patsubst $(objpfx)%,%,$^)
- else
- $(AR) cru$(verbose) $(..)libc.a $^
- endif
- # $(+libc_lock_close)
- endif
-
-
-
- # This makes all the object files.
- .PHONY: objects objs
- objects objs: $(objects)
-
- # Installation.
-
- # install-lib are installed from the object directory into $(libdir).
- # install-data are installed as they are into $(datadir). headers are
- # installed as they are in $(includedir). install-others are absolute path
- # names of files to install; rules to install them are defined elsewhere.
-
- do-install = $(INSTALL_DATA) $< $@
-
- # 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-lib := $(install-lib) libc.a
- endif
-
- ifdef install
- $(addprefix $(bindir)/,$(install)): $(bindir)/%: $(objpfx)%
- $(INSTALL) $< $@
- endif
- ifdef install-lib
- $(addprefix $(libdir)/,$(install-lib)): $(libdir)/%: $(objpfx)%;$(do-install)
- endif
- ifdef install-data
- $(addprefix $(datadir)/,$(install-data)): $(datadir)/%: %;$(do-install)
- endif
- +install := $(addprefix $(libdir)/,$(install-lib)) \
- $(addprefix $(datadir)/,$(install-data)) \
- $(addprefix $(bindir)/,$(install)) \
- $(install-others)
- headers := $(strip $(headers))
- ifdef headers
- $(addprefix $(includedir)/,$(headers)): \
- $(includedir)/%: %;$(do-install)
- +install := $(+install) $(addprefix $(includedir)/,$(headers))
- endif # headers
- +install := $(filter-out $(addprefix %/,$(no-install)),$(+install))
-
- .PHONY: install installdirs
- install: $(+install)
- $(+install): installdirs
- installdirs: $(..)mkinstalldirs
- $(dir $<)$(notdir $<) $(dir $(+install))
-
- S-CPPFLAGS = $(asm-CPPFLAGS)
- +make-deps = $(+mkdep) $< $(CPPFLAGS) $($(<:$*.%=%)-CPPFLAGS) | \
- sed $(sed-remove-objpfx) -e 's,$*\.o,$(@:.dep=.o) $@,' > $@
- ifneq (,$(objpfx))
- sed-remove-objpfx = -e 's,$(objpfx),$$(objpfx),g'
- endif
-
- # N.B.: The order of these two rules is important.
- $(objpfx)%.dep: %.S $(before-compile)
- $(+make-deps)
- $(objpfx)%.dep: %.c $(before-compile)
- $(+make-deps)
- $(objpfx)%.dep: %.s
- $(make-dummy-dep)
-
- +depfiles := $(strip $(sources:.c=.dep) $(addsuffix .dep,$(others) $(tests)))
- +depfiles := $(addprefix $(objpfx),$(+depfiles))
-
- $(objpfx)depend-$(subdir): Makefile
- ifdef +depfiles
- (for file in $(patsubst $(objpfx)%,%,$(+depfiles)); do \
- echo "include \$$(objpfx)$$file"; \
- done) > $@
- else
- cp /dev/null $@
- endif
-
- ifneq ($(no_deps),t)
- # Include the generated dependencies of the sources in this directory.
- ifdef have.make.that.groks.multiple.includes
- # Avoid the extra file and waiting for it, since we can.
- +depfiles := $(strip $(+depfiles))
- ifdef +depfiles
- include $(+depfiles)
- endif
- else
- include $(objpfx)depend-$(subdir)
- endif
- endif
-
- # Command to compile $< in $(objdir) using the native libraries.
- native-compile = cwd=`pwd`; cd $(@D); $(CC) $(native-CFLAGS) \
- $(addprefix $$cwd/,$^) -o $(@F)
-
- # Command to compile $< in $(common-objdir) using the native libraries.
- define common-objdir-compile
- cd $(@D); $(CC) $(native-CFLAGS) $(<:$(common-objpfx)%=%) -o $(@F)
- endef
-
- # We always want to use configuration -D switches.
- native-CFLAGS = $(config-defines)
-
- # Support the GNU standard name for this target.
- .PHONY: check
- check: tests
-
- .PHONY: TAGS
- TAGS: $(..)MakeTAGS
- $(MAKE) -f $< $@
-
- .PHONY: echo-headers
- echo-headers:
- @echo $(headers)
-
-
- # Produce a file `stub-$(subdir)' which contains `#define __stub_FUNCTION'
- # for each function which is a stub. We grovel over all the .dep 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.
- sed -n 's/^stub_warning *(\([^)]*\).*$$/#define __stub_\1/p' \
- `sed -n 's@^.*\($(sysdep_dir)/stub/[a-z0-9_]*\.c\).*$$@\1@p' \
- $^ /dev/null` \
- /dev/null > $@T
- mv $@T $@
-
- ifdef gpl2lgpl
- ifneq (,$(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
-