csu/Makefile - nest-cam/v366/glibc - Git at Google

 # Makefile for csu code for GNU C library.
 # Copyright (C) 1995-2004, 2005, 2006, 2010 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 Lesser General Public
 # License as published by the Free Software Foundation; either
 # version 2.1 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
 # Lesser General Public License for more details.

 # You should have received a copy of the GNU Lesser General Public
 # License along with the GNU C Library; if not, write to the Free
 # Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 # 02111-1307 USA.

 # This directory contains the C startup code (that which calls main).  This
 # consists of the startfile, built from start.c and installed as crt0.o
 # (traditionally) or crt1.o (for ELF).	In ELF we also install crti.o and
 # crtn.o, special "initializer" and "finalizer" files used in the link
 # to make the .init and .fini sections work right; both these files are
 # built (in an arcane manner) from initfini.c.

 subdir := csu

 routines = init-first libc-start $(libc-init) sysdep version check_fds \
 	   libc-tls elf-init dso_handle
 aux	 = errno
 elide-routines.os = libc-tls
 static-only-routines = elf-init
 csu-dummies = $(filter-out $(start-installed-name),crt1.o Mcrt1.o)
 extra-objs = start.o gmon-start.o \
 	     $(start-installed-name) g$(start-installed-name) $(csu-dummies) \
 	     S$(start-installed-name)
 omit-deps = $(patsubst %.o,%,$(start-installed-name) g$(start-installed-name) \
 			     b$(start-installed-name) $(csu-dummies) \
 			     S$(start-installed-name))
 install-lib = $(start-installed-name) g$(start-installed-name) $(csu-dummies)
 distribute = initfini.c gmon-start.c start.c defs.awk \
 	     abi-note.S init.c c not-cancel.h
 generated = version-info.h
 before-compile = $(objpfx)version-info.h

 tests := tst-empty tst-atomic tst-atomic-long
 tests-static := tst-empty

 all: # Make this the default target; it will be defined in Rules.

 include ../Makeconfig

 ifeq (yes,$(build-shared))
 extra-objs += S$(start-installed-name)
 install-lib += S$(start-installed-name)
 generated += start.os
 endif

 ifeq (yes,$(build-bounded))
 extra-objs += b$(start-installed-name)
 install-lib += b$(start-installed-name)
 generated += start.ob
 endif

 ifneq ($(start-installed-name),$(static-start-installed-name))
 extra-objs += $(static-start-installed-name) g$(static-start-installed-name)
 omit-deps += $(patsubst %.o,%,$(static-start-installed-name) \
 			     g$(static-start-installed-name))
 install-lib += $(static-start-installed-name) g$(static-start-installed-name)
 endif

 ifeq (yes,$(elf))
 before-compile += $(objpfx)abi-tag.h
 generated += abi-tag.h
 endif

 ifeq ($(have-initfini),yes)

 CPPFLAGS += -DHAVE_INITFINI

 # These are the special initializer/finalizer files.  They are always the
 # first and last file in the link.  crti.o ... crtn.o define the global
 # "functions" _init and _fini to run the .init and .fini sections.
 crtstuff = crti crtn

 install-lib += $(crtstuff:=.o)
 extra-objs += $(crtstuff:=.o)
 generated += $(crtstuff:=.S) initfini.s defs.h
 omit-deps += $(crtstuff)

 # Special rules for the building of crti.o and crtn.o
 $(crtstuff:%=$(objpfx)%.o): %.o: %.S $(objpfx)defs.h
 	$(compile.S) -g0 $(ASFLAGS-.os) -o $@

 CFLAGS-initfini.s = -g0 -fPIC -fno-inline-functions $(fno-unit-at-a-time)

 vpath initfini.c $(sysdirs)

 $(objpfx)initfini.s: initfini.c $(before-compile)
 	$(compile.c) -S $(CFLAGS-initfini.s) -finhibit-size-directive \
 		$(patsubst -f%,-fno-%,$(exceptions)) -o $@

 # We only have one kind of startup code files.	Static binaries and
 # shared libraries are build using the PIC version.
 $(objpfx)crti.S: $(objpfx)initfini.s
 	sed -n -e '1,/@HEADER_ENDS/p' \
 	       -e '/@_.*_PROLOG_BEGINS/,/@_.*_PROLOG_ENDS/p' \
 	       -e '/@TRAILER_BEGINS/,$$p' $< > $@

 $(objpfx)crtn.S: $(objpfx)initfini.s
 	sed -n -e '1,/@HEADER_ENDS/p' \
 	       -e '/@_.*_EPILOG_BEGINS/,/@_.*_EPILOG_ENDS/p' \
 	       -e '/@TRAILER_BEGINS/,$$p' $< > $@

 # These explicit rules are necessary when the $(objpfx) subdirectory
 # did not exist at the time make considered the implicit rules using it.
 # This comes up with a fresh build using no_deps=t.
 $(patsubst %,$(objpfx)crt%.o,i n): %.o: %.S

 $(objpfx)defs.h: $(objpfx)initfini.s
 	sed -n -e '/@TESTS_BEGIN/,/@TESTS_END/p' $< | \
 		$(AWK) -f defs.awk > $@

 endif

 ifeq (yes,$(elf))
 extra-objs += abi-note.o init.o
 asm-CPPFLAGS += -I$(objpfx).
 endif

 include ../Rules

 # Make these in the lib pass so they're available in time to link things with.
 subdir_lib: $(extra-objs:%=$(objpfx)%)

 define link-relocatable
 $(CC) -nostdlib -nostartfiles -r -o $@ $^
 endef

 ifndef start-installed-name-rule
 ifeq (yes,$(elf))
 # We link the ELF startfile along with a SHT_NOTE section indicating
 # the kernel ABI the binaries linked with this library will require.
 $(objpfx)$(start-installed-name): $(objpfx)start.o $(objpfx)abi-note.o \
 				  $(objpfx)init.o
 	$(link-relocatable)
 $(objpfx)S$(start-installed-name): $(objpfx)start.os $(objpfx)abi-note.o \
 				  $(objpfx)init.o
 	$(link-relocatable)
 $(objpfx)b$(start-installed-name): $(objpfx)start.ob $(objpfx)abi-note.ob \
 				  $(objpfx)init.ob
 	$(link-relocatable)
 else
 # The startfile is installed under different names, so we just call our
 # source file `start.c' and copy to the installed name after compiling.
 $(objpfx)$(start-installed-name): $(objpfx)start.o
 	rm -f $@
 	ln $< $@
 $(objpfx)S$(start-installed-name): $(objpfx)start.os
 	rm -f $@
 	ln $< $@
 $(objpfx)b$(start-installed-name): $(objpfx)start.ob
 	rm -f $@
 	ln $< $@
 endif
 endif

 # The profiling startfile is made by linking together the normal
 # startfile with gmon-start.o, which defines a constructor function
 # to turn on profiling code at startup.
 $(addprefix $(objpfx),$(sort g$(start-installed-name) \
 			     g$(static-start-installed-name))): \
   $(objpfx)g%: $(objpfx)% $(objpfx)gmon-start.o
 	$(link-relocatable)

 # These extra files are sometimes expected by system standard linking
 # procedures, but we have nothing for them to do.  So compile empty files.
 $(addprefix $(objpfx),$(filter-out $(start-installed-name), $(csu-dummies))):\
   $(before-compile)
 	$(COMPILE.c) -o $@ -x c /dev/null

 # These headers are used by the startup code.
 $(objpfx)abi-tag.h: $(..)abi-tags
 	$(make-target-directory)
 	rm -f $@.new
 	sed -e 's/#.*$$//' -e '/^[	]*$$/d' $< | \
 	while read conf tagos tagver; do \
 	  test `expr '$(config-machine)-$(config-vendor)-$(config-os)' \
 		     : "$$conf"` != 0 || continue; \
 	  ( echo "$$tagos" | \
 	    sed -e 's/[^0-9xXa-fA-F 	]//' \
 		-e 's/^/#define __ABI_TAG_OS /'; \
 	    echo "#ifndef __ABI_TAG_VERSION"; \
 	    echo "$$tagver" | \
 	    sed -e 's/[^0-9xXa-fA-F]/ /g' -e 's/ *$$//' \
 	      -e 's/ /,/g' -e 's/^/# define __ABI_TAG_VERSION /'; \
 	    echo "#endif" ) > $@.new; \
 	done
 	if test -r $@.new; then mv -f $@.new $@; \
 	else echo >&2 'This configuration not matched in $<'; exit 1; fi

 all-Banner-files = $(wildcard $(addsuffix /Banner,\
 					  $(sort $(subdir-srcdirs) \
 						 $(sysdeps-srcdirs))))
 $(objpfx)version-info.h: $(common-objpfx)config.make $(all-Banner-files)
 	$(make-target-directory)
 	(case $(config-os) in \
 	   linux*) version=`(printf '%s\n%s\n' \
 				    '#include <linux/version.h>' \
 				    UTS_RELEASE \
 			     | $(CC) $(CPPFLAGS) -O -E -P - -DNOT_IN_libc=1 | \
 			     sed -e 's/"\([^"]*\)".*/\1/p' -e d) 2>/dev/null`;\
 		   if [ -z "$$version" ]; then \
 		     version=`(printf '%s\n%s\n' \
 				      '#include <linux/version.h>' \
 				       LINUX_VERSION_CODE \
 			       | $(CC) $(CPPFLAGS) -O -E -P - -DNOT_IN_libc=1 \
 			       | sed -n -e '/^[123456789].*/p' \
 			       | awk '{v=$$1; \
 				       printf("%d.%d.%d\n", \
 					      v/65535, v/256%256, v%256)}') \
 				2>/dev/null`; \
 		   fi; \
 		   if [ -z "$$version" ]; then \
 		     if [ -r /proc/version ]; then \
 		       version=`sed 's/.*Linux version \([^ ]*\) .*/>>\1<</' \
 				< /proc/version`; \
 		     else \
 		       version=`uname -r`; \
 		     fi; \
 		   fi; \
 		   os=`uname -s 2> /dev/null`; \
 		   if [ -z "$$os" ]; then \
 		     os=Linux; \
 		   fi; \
 		   printf '"Compiled on a %s %s system on %s.\\n"\n' \
 			  "$$os" "$$version" "`date +%Y-%m-%d`";; \
 	   *) ;; \
 	 esac; \
 	 files="$(all-Banner-files)";				\
 	 if test -n "$$files"; then				\
 	   printf '"Available extensions:\\n"\n';		\
 	   sed -e '/^#/d' -e 's/^[[:space:]]*/	/'		\
 	       -e 's/^\(.*\)$$/\"\1\\n\"/' $$files;		\
 	 fi) > $@T
 	mv -f $@T $@
	# Makefile for csu code for GNU C library.
	# Copyright (C) 1995-2004, 2005, 2006, 2010 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 Lesser General Public
	# License as published by the Free Software Foundation; either
	# version 2.1 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
	# Lesser General Public License for more details.

	# You should have received a copy of the GNU Lesser General Public
	# License along with the GNU C Library; if not, write to the Free
	# Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
	# 02111-1307 USA.

	# This directory contains the C startup code (that which calls main). This
	# consists of the startfile, built from start.c and installed as crt0.o
	# (traditionally) or crt1.o (for ELF). In ELF we also install crti.o and
	# crtn.o, special "initializer" and "finalizer" files used in the link
	# to make the .init and .fini sections work right; both these files are
	# built (in an arcane manner) from initfini.c.

	subdir := csu

	routines = init-first libc-start $(libc-init) sysdep version check_fds \
	libc-tls elf-init dso_handle
	aux = errno
	elide-routines.os = libc-tls
	static-only-routines = elf-init
	csu-dummies = $(filter-out $(start-installed-name),crt1.o Mcrt1.o)
	extra-objs = start.o gmon-start.o \
	$(start-installed-name) g$(start-installed-name) $(csu-dummies) \
	S$(start-installed-name)
	omit-deps = $(patsubst %.o,%,$(start-installed-name) g$(start-installed-name) \
	b$(start-installed-name) $(csu-dummies) \
	S$(start-installed-name))
	install-lib = $(start-installed-name) g$(start-installed-name) $(csu-dummies)
	distribute = initfini.c gmon-start.c start.c defs.awk \
	abi-note.S init.c c not-cancel.h
	generated = version-info.h
	before-compile = $(objpfx)version-info.h

	tests := tst-empty tst-atomic tst-atomic-long
	tests-static := tst-empty

	all: # Make this the default target; it will be defined in Rules.

	include ../Makeconfig

	ifeq (yes,$(build-shared))
	extra-objs += S$(start-installed-name)
	install-lib += S$(start-installed-name)
	generated += start.os
	endif

	ifeq (yes,$(build-bounded))
	extra-objs += b$(start-installed-name)
	install-lib += b$(start-installed-name)
	generated += start.ob
	endif

	ifneq ($(start-installed-name),$(static-start-installed-name))
	extra-objs += $(static-start-installed-name) g$(static-start-installed-name)
	omit-deps += $(patsubst %.o,%,$(static-start-installed-name) \
	g$(static-start-installed-name))
	install-lib += $(static-start-installed-name) g$(static-start-installed-name)
	endif

	ifeq (yes,$(elf))
	before-compile += $(objpfx)abi-tag.h
	generated += abi-tag.h
	endif

	ifeq ($(have-initfini),yes)

	CPPFLAGS += -DHAVE_INITFINI

	# These are the special initializer/finalizer files. They are always the
	# first and last file in the link. crti.o ... crtn.o define the global
	# "functions" _init and _fini to run the .init and .fini sections.
	crtstuff = crti crtn

	install-lib += $(crtstuff:=.o)
	extra-objs += $(crtstuff:=.o)
	generated += $(crtstuff:=.S) initfini.s defs.h
	omit-deps += $(crtstuff)

	# Special rules for the building of crti.o and crtn.o
	$(crtstuff:%=$(objpfx)%.o): %.o: %.S $(objpfx)defs.h
	$(compile.S) -g0 $(ASFLAGS-.os) -o $@

	CFLAGS-initfini.s = -g0 -fPIC -fno-inline-functions $(fno-unit-at-a-time)

	vpath initfini.c $(sysdirs)

	$(objpfx)initfini.s: initfini.c $(before-compile)
	$(compile.c) -S $(CFLAGS-initfini.s) -finhibit-size-directive \
	$(patsubst -f%,-fno-%,$(exceptions)) -o $@

	# We only have one kind of startup code files. Static binaries and
	# shared libraries are build using the PIC version.
	$(objpfx)crti.S: $(objpfx)initfini.s
	sed -n -e '1,/@HEADER_ENDS/p' \
	-e '/@_._PROLOG_BEGINS/,/@_._PROLOG_ENDS/p' \
	-e '/@TRAILER_BEGINS/,$$p' $< > $@

	$(objpfx)crtn.S: $(objpfx)initfini.s
	sed -n -e '1,/@HEADER_ENDS/p' \
	-e '/@_._EPILOG_BEGINS/,/@_._EPILOG_ENDS/p' \
	-e '/@TRAILER_BEGINS/,$$p' $< > $@

	# These explicit rules are necessary when the $(objpfx) subdirectory
	# did not exist at the time make considered the implicit rules using it.
	# This comes up with a fresh build using no_deps=t.
	$(patsubst %,$(objpfx)crt%.o,i n): %.o: %.S

	$(objpfx)defs.h: $(objpfx)initfini.s
	sed -n -e '/@TESTS_BEGIN/,/@TESTS_END/p' $< \| \
	$(AWK) -f defs.awk > $@

	endif

	ifeq (yes,$(elf))
	extra-objs += abi-note.o init.o
	asm-CPPFLAGS += -I$(objpfx).
	endif

	include ../Rules

	# Make these in the lib pass so they're available in time to link things with.
	subdir_lib: $(extra-objs:%=$(objpfx)%)

	define link-relocatable
	$(CC) -nostdlib -nostartfiles -r -o $@ $^
	endef

	ifndef start-installed-name-rule
	ifeq (yes,$(elf))
	# We link the ELF startfile along with a SHT_NOTE section indicating
	# the kernel ABI the binaries linked with this library will require.
	$(objpfx)$(start-installed-name): $(objpfx)start.o $(objpfx)abi-note.o \
	$(objpfx)init.o
	$(link-relocatable)
	$(objpfx)S$(start-installed-name): $(objpfx)start.os $(objpfx)abi-note.o \
	$(objpfx)init.o
	$(link-relocatable)
	$(objpfx)b$(start-installed-name): $(objpfx)start.ob $(objpfx)abi-note.ob \
	$(objpfx)init.ob
	$(link-relocatable)
	else
	# The startfile is installed under different names, so we just call our
	# source file `start.c' and copy to the installed name after compiling.
	$(objpfx)$(start-installed-name): $(objpfx)start.o
	rm -f $@
	ln $< $@
	$(objpfx)S$(start-installed-name): $(objpfx)start.os
	rm -f $@
	ln $< $@
	$(objpfx)b$(start-installed-name): $(objpfx)start.ob
	rm -f $@
	ln $< $@
	endif
	endif

	# The profiling startfile is made by linking together the normal
	# startfile with gmon-start.o, which defines a constructor function
	# to turn on profiling code at startup.
	$(addprefix $(objpfx),$(sort g$(start-installed-name) \
	g$(static-start-installed-name))): \
	$(objpfx)g%: $(objpfx)% $(objpfx)gmon-start.o
	$(link-relocatable)

	# These extra files are sometimes expected by system standard linking
	# procedures, but we have nothing for them to do. So compile empty files.
	$(addprefix $(objpfx),$(filter-out $(start-installed-name), $(csu-dummies))):\
	$(before-compile)
	$(COMPILE.c) -o $@ -x c /dev/null

	# These headers are used by the startup code.
	$(objpfx)abi-tag.h: $(..)abi-tags
	$(make-target-directory)
	rm -f $@.new
	sed -e 's/#.$$//' -e '/^[ ]$$/d' $< \| \
	while read conf tagos tagver; do \
	test `expr '$(config-machine)-$(config-vendor)-$(config-os)' \
	: "$$conf"` != 0 \|\| continue; \
	( echo "$$tagos" \| \
	sed -e 's/[^0-9xXa-fA-F ]//' \
	-e 's/^/#define __ABI_TAG_OS /'; \
	echo "#ifndef __ABI_TAG_VERSION"; \
	echo "$$tagver" \| \
	sed -e 's/[^0-9xXa-fA-F]/ /g' -e 's/ *$$//' \
	-e 's/ /,/g' -e 's/^/# define __ABI_TAG_VERSION /'; \
	echo "#endif" ) > $@.new; \
	done
	if test -r $@.new; then mv -f $@.new $@; \
	else echo >&2 'This configuration not matched in $<'; exit 1; fi

	all-Banner-files = $(wildcard $(addsuffix /Banner,\
	$(sort $(subdir-srcdirs) \
	$(sysdeps-srcdirs))))
	$(objpfx)version-info.h: $(common-objpfx)config.make $(all-Banner-files)
	$(make-target-directory)
	(case $(config-os) in \
	linux*) version=`(printf '%s\n%s\n' \
	'#include <linux/version.h>' \
	UTS_RELEASE \
	\| $(CC) $(CPPFLAGS) -O -E -P - -DNOT_IN_libc=1 \| \
	sed -e 's/"\([^"]\)"./\1/p' -e d) 2>/dev/null`;\
	if [ -z "$$version" ]; then \
	version=`(printf '%s\n%s\n' \
	'#include <linux/version.h>' \
	LINUX_VERSION_CODE \
	\| $(CC) $(CPPFLAGS) -O -E -P - -DNOT_IN_libc=1 \
	\| sed -n -e '/^[123456789].*/p' \
	\| awk '{v=$$1; \
	printf("%d.%d.%d\n", \
	v/65535, v/256%256, v%256)}') \
	2>/dev/null`; \
	fi; \
	if [ -z "$$version" ]; then \
	if [ -r /proc/version ]; then \
	version=`sed 's/.Linux version \([^ ]\) .*/>>\1<</' \
	< /proc/version`; \
	else \
	version=`uname -r`; \
	fi; \
	fi; \
	os=`uname -s 2> /dev/null`; \
	if [ -z "$$os" ]; then \
	os=Linux; \
	fi; \
	printf '"Compiled on a %s %s system on %s.\\n"\n' \
	"$$os" "$$version" "`date +%Y-%m-%d`";; \
	*) ;; \
	esac; \
	files="$(all-Banner-files)"; \
	if test -n "$$files"; then \
	printf '"Available extensions:\\n"\n'; \
	sed -e '/^#/d' -e 's/^[[:space:]]*/ /' \
	-e 's/^\(.*\)$$/\"\1\\n\"/' $$files; \
	fi) > $@T
	mv -f $@T $@