# Makefile for csu code for GNU C library.
-# Copyright (C) 1995,96,97,98,99,2000,01,2002 Free Software Foundation, Inc.
+# Copyright (C) 1995-2014 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
# 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.
+# License along with the GNU C Library; if not, see
+# <http://www.gnu.org/licenses/>.
# 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.
+# to make the .init and .fini sections work right.
subdir := csu
routines = init-first libc-start $(libc-init) sysdep version check_fds \
- libc-tls elf-init
+ 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)
+ $(start-installed-name) g$(start-installed-name) $(csu-dummies) \
+ S$(start-installed-name)
omit-deps = $(patsubst %.o,%,$(start-installed-name) g$(start-installed-name) \
- b$(start-installed-name) $(csu-dummies))
+ b$(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 munch.awk \
- abi-note.S init.c munch-tmpl.c
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-bounded))
-extra-objs += b$(start-installed-name)
-install-lib += b$(start-installed-name)
+ifeq (yes,$(build-shared))
+extra-objs += S$(start-installed-name)
+install-lib += S$(start-installed-name)
+generated += start.os
endif
ifneq ($(start-installed-name),$(static-start-installed-name))
install-lib += $(static-start-installed-name) g$(static-start-installed-name)
endif
-ifeq (yes,$(elf))
before-compile += $(objpfx)abi-tag.h
generated += abi-tag.h
-endif
-
-ifneq (yes,$(gnu-ld))
-libc-init = munch-init
-$(objpfx)munch-init.c: munch.awk munch-tmpl.c $(+subdir_inits)
- $(AWK) -f $< subdirs='$(+init_subdirs)' $(word 2,$^) > $@-t
- mv -f $@-t $@
-generated += munch-init.c
-
-# All initialization source files.
-+subdir_inits := $(wildcard $(foreach dir,$(subdirs),$(dir)/init-$(dir).c))
-# All subdirectories containing initialization source files.
-+init_subdirs := $(patsubst %/,%,$(dir $(+subdir_inits)))
-endif
-
-ifeq ($(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
install-lib += $(crtstuff:=.o)
extra-objs += $(crtstuff:=.o)
-generated += $(crtstuff:=.S) initfini.s defs.h
-omit-deps += $(crtstuff)
-
-# Special rules for the building of crti.o and crtn.o
-$(objpfx)crt%.o: $(objpfx)crt%.S $(objpfx)defs.h
- $(compile.S) -g0 $(ASFLAGS-.os) -o $@
-
-CFLAGS-initfini.s = -g0 -fPIC -fno-inline-functions
-
-vpath initfini.c $(full_config_sysdirs)
-
-$(objpfx)initfini.s: initfini.c
- $(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
$(CC) -nostdlib -nostartfiles -r -o $@ $^
endef
-# We don't want this compiled with PIC.
-# It's never included in shared libraries, unlike the rest of libc_nonshared.a.
-$(objpfx)elf-init.oS: $(objpfx)elf-init.o
- ln -f $< $@
-
ifndef start-installed-name-rule
-ifeq (yes,$(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)b$(start-installed-name): $(objpfx)start.ob $(objpfx)abi-note.ob \
- $(objpfx)init.ob
+$(objpfx)S$(start-installed-name): $(objpfx)start.os $(objpfx)abi-note.o \
+ $(objpfx)init.o
$(link-relocatable)
-else
-# The startfile is installed under different names, so we just call our
-# source file `start.c' and copy to the installed name after compiling.
-$(objpfx)$(start-installed-name): $(objpfx)start.o
- rm -f $@
- ln $< $@
-$(objpfx)b$(start-installed-name): $(objpfx)start.ob
- rm -f $@
- ln $< $@
-endif
endif
# The profiling startfile is made by linking together the normal
# These extra files are sometimes expected by system standard linking
# procedures, but we have nothing for them to do. So compile empty files.
-$(addprefix $(objpfx),$(filter-out $(start-installed-name),$(csu-dummies))):
- @-rm -f $(@:.o=.c)
- echo > $(@:.o=.c)
- $(COMPILE.c) $(@:.o=.c) $(OUTPUT_OPTION)
- rm -f $(@:.o=.c)
+$(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
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, \
- $(addprefix $(..), $(subdirs))))
+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=`(echo -e "#include <linux/version.h>\nUTS_RELEASE"\
- | $(CC) -E -P - | \
+ 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<</' \
if [ -z "$$os" ]; then \
os=Linux; \
fi; \
- echo "\"Compiled on a $$os $$version system" \
- "on `date +%Y-%m-%d`.\\n\"" ;; \
+ printf '"Compiled on a %s %s system on %s.\\n"\n' \
+ "$$os" "$$version" "`date +%Y-%m-%d`";; \
*) ;; \
esac; \
files="$(all-Banner-files)"; \
if test -n "$$files"; then \
- echo "\"Available extensions:\\n\""; \
+ printf '"Available extensions:\\n"\n'; \
sed -e '/^#/d' -e 's/^[[:space:]]*/ /' \
- -e 's/\(^.*$$\)/\"\1\\n\"/' $$files; \
+ -e 's/^\(.*\)$$/\"\1\\n\"/' $$files; \
fi) > $@T
mv -f $@T $@
projects / thirdparty / glibc.git / blobdiff