mirror of
https://sourceware.org/git/glibc.git
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545 lines
18 KiB
Plaintext
545 lines
18 KiB
Plaintext
# Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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# The GNU C Library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Library General Public License as
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# published by the Free Software Foundation; either version 2 of the
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# License, or (at your option) any later version.
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# The GNU C Library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Library General Public License for more details.
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# You should have received a copy of the GNU Library General Public
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# License along with the GNU C Library; see the file COPYING.LIB. If
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# not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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# Cambridge, MA 02139, USA.
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#
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# Common rules for making the GNU C library. This file is included
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# by the top-level Makefile and by all subdirectory makefiles
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# (through Rules).
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#
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ifneq (,)
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This makefile requires GNU Make.
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endif
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ifdef subdir
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.. := ../
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endif # subdir
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# If `sources' was defined by the parent makefile, undefine it so
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# we will later get it from wildcard search in this directory.
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ifneq "$(findstring env,$(origin sources))" ""
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sources :=
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endif
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headers := $(headers) $(sysdep_headers)
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oPATH := $(PATH)
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PATH := this definition should take precedence over $(oPATH)
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ifeq ($(PATH),$(oPATH))
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You must not use the -e flag when building the GNU C library.
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else
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PATH := $(oPATH)
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endif
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ifndef +included-Makeconfig
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include $(..)Makeconfig
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endif
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# `configure' writes a definition of `config-sysdirs' in `config.make'.
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sysdirs = $(config-sysdirs)
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+sysdir_pfx = $(common-objpfx)
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export sysdirs := $(sysdirs)
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+sysdep_dirs := $(addprefix $(sysdep_dir)/,$(sysdirs))
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ifdef objdir
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+sysdep_dirs := $(objdir) $(+sysdep_dirs)
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endif
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# Add -I switches to get the right sysdep directories.
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# `+includes' in Makeconfig references $(+sysdep-includes).
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+sysdep-includes := $(addprefix -I,$(+sysdep_dirs))
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# Include any system-specific makefiles.
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# This is here so things in sysdep Makefiles can easily depend on foo.h as
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# appropriate and not worry about where foo.h comes from, which may be
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# system dependent and not known by that Makefile.
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vpath %.h $(subst $(empty) ,:,$(strip $(common-objpfx) \
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$(addprefix $(sysdep_dir)/,$(sysdirs)) \
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$(..)))
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ifeq ($(wildcard $(+sysdir_pfx)sysd-Makefile),)
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# Don't do deps until this exists, because it might change the sources list.
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no_deps=t
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endif
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# Some sysdep makefiles use this to distinguish being included here from
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# being included individually by a subdir makefile (hurd/Makefile needs this).
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in-Makerules := yes
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ifndef avoid-generated
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include $(+sysdir_pfx)sysd-Makefile
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$(+sysdir_pfx)sysd-Makefile: $(+sysdir_pfx)config.make $(..)Makerules
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-@rm -f $@T
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(for dir in $(sysdirs); do \
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file=sysdeps/$$dir/Makefile; \
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if [ -f $(..)$$file ]; then \
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echo include "\$$(..)$$file"; \
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else true; fi; \
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done; \
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echo 'sysd-Makefile-done=t') > $@T
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mv -f $@T $@
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endif
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# Reorder before-compile so that mach things come first, and hurd things
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# second, before all else. The mach and hurd subdirectories have many
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# generated header files which the much of rest of the library depends on,
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# so it is best to build them first (and mach before hurd, at that).
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before-compile := $(filter $(common-objpfx)mach% $(common-objpfx)hurd%,\
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$(before-compile)) \
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$(filter-out $(common-objpfx)mach% $(common-objpfx)hurd%,\
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$(before-compile))
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# Remove existing files from `before-compile'. Things are added there when
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# they must exist for dependency generation to work right, but once they
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# exist there is no further need for every single file to depend on them,
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# and those gratuitous dependencies result in many gratuitous
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# recompilations.
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before-compile := $(filter-out $(wildcard $(before-compile)),$(before-compile))
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# Don't let any before-compile file be an intermediate and get removed.
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ifdef before-compile
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$(before-compile):
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endif
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# Generate an ordered list of implicit rules which find the source files in
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# each sysdep directory. The old method was to use vpath to search all the
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# sysdep directories. However, that had the problem that a .S file in a
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# later directory would be chosen over a .c file in an earlier directory,
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# which does not preserve the desired sysdeps ordering behavior.
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# When making the list of .d files to include, we can't know which ones
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# have source in .s files, and thus do not in fact need a .d file.
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# So we must define rules to make .d files for .s files.
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define make-dummy-dep
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$(addprefix ln $(objpfx)dummy.d ,$(filter-out $(wildcard $@),$@))
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endef
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$(objpfx)dummy.d:
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echo '# .s files cannot contain includes, so they need no deps.' > $@
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# It matters that this set of rules, for compiling from sources in
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# the current directory (the $srcdir/$subdir) come before the
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# generated sysdep rules in included from sysd-rules below. When
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# compiling in the source tree, generated sources go into the current
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# directory, and those should be chosen before any sources in sysdeps.
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$(objpfx)%.o: %.S $(before-compile); $(compile-command.S)
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$(objpfx)%.d: %.S $(before-compile); $(+make-deps)
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$(objpfx)%.o: %.s $(before-compile); $(compile-command.s)
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$(objpfx)%.d: %.s $(objpfx)dummy.d; $(make-dummy-dep)
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$(objpfx)%.o: %.c $(before-compile); $(compile-command.c)
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$(objpfx)%.d: %.c $(before-compile); $(+make-deps)
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# Omit the objpfx rules when building in the source tree, because
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# objpfx is empty and so these rules just override the ones above.
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ifdef objpfx
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# Define first rules to find the source files in $(objpfx).
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# Generated source files will end up there.
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$(objpfx)%.o: $(objpfx)%.S $(before-compile); $(compile-command.S)
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$(objpfx)%.d: $(objpfx)%.S $(before-compile); $(+make-deps)
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$(objpfx)%.o: $(objpfx)%.s $(before-compile); $(compile-command.s)
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$(objpfx)%.d: $(objpfx)%.s $(objpfx)dummy.d; $(make-dummy-dep)
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$(objpfx)%.o: $(objpfx)%.c $(before-compile); $(compile-command.c)
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$(objpfx)%.d: $(objpfx)%.c $(before-compile); $(+make-deps)
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endif
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# System-dependent makefiles can put in `inhibit-sysdep-asm' wildcard
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# patterns matching sysdep directories whose assembly source files should
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# be suppressed.
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ifdef inhibit-sysdep-asm
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define open-check-inhibit-asm
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case $$sysdir in $(subst $(empty) ,|,$(inhibit-sysdep-asm))) : ;; *)
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endef
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close-check-inhibit-asm = ;; esac
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endif
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# Don't include sysd-rules until sysd-Makefile is already there and has been
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# included. It might define inhibit-sysdep-asm, which would affect the
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# contents of sysd-rules.
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ifdef sysd-Makefile-done
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include $(+sysdir_pfx)sysd-rules
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endif
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$(+sysdir_pfx)sysd-rules: $(+sysdir_pfx)config.make $(..)Makerules \
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$(wildcard $(foreach dir,$(sysdirs),\
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$(sysdep_dir)/$(dir)/Makefile))
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-@rm -f $@T
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(for sysdir in $(sysdirs); do \
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dir="\$$(sysdep_dir)/$$sysdir"; \
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$(open-check-inhibit-asm) \
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echo "\$$(objpfx)%.o: $$dir/%.S \$$(before-compile); \
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\$$(compile-command.S)"; \
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echo "\$$(objpfx)%.d: $$dir/%.S \$$(before-compile); \
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\$$(+make-deps)"; \
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echo "\$$(objpfx)%.o: $$dir/%.s \$$(before-compile); \
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\$$(compile-command.s)"; \
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echo "\$$(objpfx)%.d: $$dir/%.s \$$(objpfx)dummy.d; \
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\$$(make-dummy-dep)" $(close-check-inhibit-asm); \
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echo "\$$(objpfx)%.o: $$dir/%.c \$$(before-compile); \
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\$$(compile-command.c)"; \
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echo "\$$(objpfx)%.d: $$dir/%.c \$$(before-compile); \
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\$$(+make-deps)"; \
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done) > $@T
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mv -f $@T $@
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ifndef compile-command.S
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compile-command.S = $(compile.S) $(OUTPUT_OPTION)
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endif
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ifndef compile-command.s
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compile-command.s = $(COMPILE.s) $< $(OUTPUT_OPTION)
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endif
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ifndef compile-command.c
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compile-command.c = $(compile.c) $(OUTPUT_OPTION)
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endif
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ifneq ($(filter %gcc,$(notdir $(firstword $(CC)))),)
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# GCC can grok options after the file name, and it looks nicer that way.
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compile.S = $(CC) $< -c $(CPPFLAGS) -DASSEMBLER $(asm-CPPFLAGS)
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compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
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else
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compile.S = $(COMPILE.S) -DASSEMBLER $(asm-CPPFLAGS) $<
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compile.c = $(COMPILE.c) $<
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endif
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ifndef OUTPUT_OPTION
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ifdef objpfx
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# We need this for the output to go in the right place. It will default to
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# empty if make was configured to work with a cc that can't grok -c and -o
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# together. You can't compile the C library with such a compiler.
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OUTPUT_OPTION = -o $@
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endif
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endif
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S-CPPFLAGS = $(asm-CPPFLAGS)
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define +make-deps
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-@rm -f $@
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$(+mkdep) $< $(CPPFLAGS) $($(<:$*.%=%)-CPPFLAGS) | \
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sed -e 's,$*\.o,$(@:.d=.o) $@,' $(sed-remove-objpfx) > $(@:.d=.T)
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mv -f $(@:.d=.T) $@
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endef
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ifneq (,$(objpfx))
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sed-remove-objpfx = -e 's@ $(subst @,\@,$(objpfx))@ $$(objpfx)@g' \
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-e 's@^$(subst @,\@,$(objpfx))@$$(objpfx)@g'
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endif
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# Figure out the source filenames in this directory.
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override sources := $(addsuffix .c,$(filter-out $(elided-routines),\
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$(routines) $(aux) \
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$(sysdep_routines)))
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sysdep_routines := $(sysdep_routines)
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# This is the list of all object files, gotten by
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# replacing every ".c" in `sources' with a ".o".
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override objects := $(addprefix $(objpfx),$(sources:.c=.o))
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+depfiles := $(strip $(sources:.c=.d) \
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$(patsubst %.o,%.d,$(filter %.o,$(extra-objs))) \
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$(addsuffix .d,$(others) $(tests)))
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+depfiles := $(addprefix $(objpfx),\
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$(filter-out $(addsuffix .d,$(omit-deps)),\
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$(+depfiles)))
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$(objpfx)depend-$(subdir): Makefile
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ifdef +depfiles
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for file in $(+depfiles:$(objpfx)%=%); do \
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echo "include \$$(objpfx)$$file"; \
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done > $@-tmp
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mv -f $@-tmp $@
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else
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cp /dev/null $@
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endif
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ifneq ($(no_deps),t)
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# Include the generated dependencies of the sources in this directory.
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include $(objpfx)depend-$(subdir)
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endif
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# Maximize efficiency by minimizing the number of rules.
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.SUFFIXES: # Clear the suffix list.
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# Add the suffixes we use.
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.SUFFIXES: .a .o .S .s .c .h .d
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# Generic rule for making directories.
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%/:
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# mkdir isn't smart enough to strip a trailing /.
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mkdir $(@:%/=%)
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# Make sure that object files are not removed
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# when they are intermediates between sources and library members.
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# This can go away with make v4.
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.PRECIOUS: %.o
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# Make sure that the parent library archive is never removed.
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.PRECIOUS: $(libc.a)
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# Use the verbose option of ar and tar when not running silently.
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ifeq "$(findstring s,$(MAKEFLAGS))" "" # if not -s
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verbose := v
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else # -s
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verbose :=
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endif # not -s
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ARFLAGS := r$(verbose)
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# This makes all the object files in the parent library archive.
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.PHONY: lib libobjs lib-noranlib
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$(libc.a): $(libc.a)(__.SYMDEF)
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lib: $(libc.a)
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+libobjs := $(patsubst %,$(libc.a)(%),$(notdir $(objects)))
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libobjs: $(+libobjs)
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lib-noranlib: libobjs
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# Define a pattern rule that will match many targets libc.%(foo.o), for
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# each foo in $(objects) (% will just happen always to match `a'). This is
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# the only way to define a rule that updates many targets at once with one
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# sequence of commands.
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ifdef objects
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$(patsubst %,$(libc.a:a=)\%(%),$(notdir $(objects))): $(objpfx)stamp-$(subdir);
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$(objpfx)stamp-$(subdir): $(objects)
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# $(+libc_lock_open)
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ifdef objdir
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cd $(objdir); $(AR) cru$(verbose) libc.a $(patsubst $(objpfx)%,%,$^)
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else
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$(AR) cru$(verbose) $(..)libc.a $^
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endif
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# $(+libc_lock_close)
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touch $@
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endif
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$(libc.a)(__.SYMDEF): $(+libobjs)
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$(RANLIB) $@
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define +libc_lock_open
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@. $(..)libc-lock-open
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endef
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define +libc_lock_close
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@rm -f $(..)LOCK-libc.a
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endef
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# This makes all the object files.
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.PHONY: objects objs
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objects objs: $(objects) $(addprefix $(objpfx),$(extra-objs))
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# Installation.
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# $(install-lib) are installed from the object directory into $(libdir);
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# files in $(install-lib) matching `lib%.a' are ranlib'd after installation
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# unless they also appear in $(non-lib.a). $(install-data) are installed
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# as they are into $(datadir). $(headers) are installed as they are in
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# $(includedir). $(install-bin) and $(install-sbin) are installed from the
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# object directory into $(bindir) and $(sbindir), respectively.
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# $(install-others) are absolute path names of files to install; rules to
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# install them are defined elsewhere.
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# The simple library name to install libc.a under.
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# This could be defined by a sysdep Makefile.
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ifndef libc-name
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libc-name := c
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endif
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define do-install
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$(make-target-directory)
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$(INSTALL_DATA) $< $@
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endef
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|
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# Make the target directory if it doesn't exist. Because of make's
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# directory cache, this will produce the `mkdir' command when the directory
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# already exists, if it didn't exist at the start of the `make' run. The
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# `-' prefix ignores errors from mkdir, so there will just be some
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# gratuitous but harmless `File exists' messages.
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define make-target-directory
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$(addprefix -mkdir ,$(filter-out $(wildcard $(@D:%/=%)),$(@D:%/=%)))
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endef
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# Any directory (parent or subdir) that has any object files to build
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# should install libc.a; this way "make install" in a subdir is guaranteed
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# to install everything it changes.
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ifdef objects
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install: $(libdir)/lib$(libprefix)$(libc-name).a
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# We avoid depending on lib-noranlib because that makes the parent make
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# subdir_lib in all the subdirs, when the make install run they do will
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# update the library anyway. Running ranlib after installing makes the
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# __.SYMDEF time stamp up to date, which avoids messages from some linkers.
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# Depending on subdir_install gets all the subdirs to update the library,
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# and is optimal for `make install' at top level.
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$(libdir)/lib$(libprefix)$(libc-name).a: libobjs subdir_install
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$(make-target-directory)
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$(INSTALL_DATA) $(libc.a) $@
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$(RANLIB) $@
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||
endif
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ifdef install-bin
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$(addprefix $(bindir)/,$(install-bin)): $(bindir)/%: $(objpfx)%
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$(make-target-directory)
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$(INSTALL_PROGRAM) $< $@
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||
endif
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||
ifdef install-sbin
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$(addprefix $(sbindir)/,$(install-sbin)): $(sbindir)/%: $(objpfx)%
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$(make-target-directory)
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$(INSTALL_PROGRAM) $< $@
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||
endif
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ifdef install-lib
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install-lib.a := $(filter lib%.a,$(install-lib))
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install-lib-non.a := $(filter-out lib%.a,$(install-lib))
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ifdef install-lib-non.a
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||
$(addprefix $(libdir)/$(libprefix),$(install-lib-non.a)): \
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$(libdir)/$(libprefix)%: $(objpfx)%
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$(do-install)
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||
endif
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||
ifdef install-lib.a
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$(install-lib.a:lib%.a=$(libdir)/lib$(libprefix)%.a): \
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$(libdir)/lib$(libprefix)%.a: $(objpfx)lib%.a
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||
$(do-install)
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||
$(patsubst %,$(RANLIB) $@,$(filter-out $(non-lib.a),$(<F)))
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||
endif
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||
endif
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ifdef install-data
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$(addprefix $(datadir)/,$(install-data)): $(datadir)/%: %;$(do-install)
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endif
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headers := $(strip $(headers))
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ifdef headers
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||
$(addprefix $(includedir)/,$(headers)): \
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$(includedir)/%: %;$(do-install)
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endif # headers
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||
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.PHONY: install-bin-nosubdir install-sbin-nosubdir install-lib-nosubdir \
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install-data-nosubdir install-headers-nosubdir
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install-bin-nosubdir: $(addprefix $(bindir)/,$(install-bin))
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install-sbin-nosubdir: $(addprefix $(sbindir)/,$(install-sbin))
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install-lib-nosubdir: $(addprefix $(libdir)/,\
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$(patsubst lib%.a,lib$(libprefix)%.a,$(install-lib.a)) \
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$(addprefix $(libprefix),$(install-lib-non.a)))
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install-data-nosubdir: $(addprefix $(datadir)/,$(install-data))
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install-headers-nosubdir: $(addprefix $(includedir)/,$(headers))
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install-others-nosubdir: $(install-others)
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|
||
# We need all the `-nosubdir' targets so that `install' in the parent
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||
# 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 ;
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||
|
||
.PHONY: install install-no-libc.a-nosubdir
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install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir\
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||
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 definitions.
|
||
BUILD_CFLAGS = -include $(common-objpfx)config.h
|
||
|
||
# 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)
|
||
s = $(sysdep_dir)/stub
|
||
$(common-objpfx)stub-$(subdir): $(+depfiles)
|
||
# Use /dev/null since `...` might expand to empty.
|
||
s=`cd $s; /bin/pwd`; \
|
||
$(patsubst %,cd %;,$(objdir)) \
|
||
sed -n 's/^stub_warning *(\([^)]*\).*$$/#define __stub_\1/p' \
|
||
`sed -n 's@^.*$s/\([a-z0-9_-]*\.c\).*$$@'"$$s"/'\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 $@
|
||
test -d CVS && cvs commit -m'Updated from $^' $@
|
||
endif
|
||
endif
|