mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-24 10:22:41 +08:00
93414bb97c
2000-05-07 H.J. Lu <hjl@gnu.org> * csu/initfini.c: Moved to .... * sysdeps/generic/initfini.c: ...here. * csu/Makefile (initfini.c): Set vpath to $(full_config_sysdirs).
202 lines
6.9 KiB
Makefile
202 lines
6.9 KiB
Makefile
# Makefile for csu code for GNU C library.
|
|
|
|
# Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000 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., 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
|
|
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)
|
|
omit-deps = $(patsubst %.o,%,$(start-installed-name) g$(start-installed-name) \
|
|
$(csu-dummies))
|
|
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 = $(objpfx)version-info.h
|
|
|
|
all: # Make this the default target; it will be defined in Rules.
|
|
|
|
include ../Makeconfig
|
|
|
|
ifeq (yes,$(elf))
|
|
before-compile += $(objpfx)abi-tag.h
|
|
generated += abi-tag.h
|
|
endif
|
|
|
|
ifeq (yes,$(gnu-ld))
|
|
libc-init = set-init
|
|
else
|
|
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
|
|
# "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
|
|
$(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' $< > $@
|
|
|
|
$(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)
|
|
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 $< $@
|
|
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.
|
|
$(objpfx)g$(start-installed-name): $(objpfx)$(start-installed-name) \
|
|
$(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))):
|
|
cp /dev/null $(@:.o=.c)
|
|
$(COMPILE.c) $(@:.o=.c) $(OUTPUT_OPTION)
|
|
rm -f $(@:.o=.c)
|
|
|
|
# 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' $< | \
|
|
while read conf tag; do \
|
|
test `expr '$(config-machine)-$(config-vendor)-$(config-os)' \
|
|
: "$$conf"` != 0 || continue; \
|
|
echo "$$tag" | \
|
|
sed -e 's/[^0-9xXa-fA-F]/ /g' -e 's/ *$$//' \
|
|
-e 's/ /,/g' -e 's/^ */#define ABI_TAG /' > $@.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, \
|
|
$(addprefix $(..), $(subdirs))))
|
|
$(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 - | \
|
|
sed -e 's/"\([^"]*\)".*/\1/p' -e d) 2>/dev/null`;\
|
|
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 "$$os" ]; then \
|
|
os=Linux; \
|
|
fi; \
|
|
echo "\"Compiled on a $$os $$version system" \
|
|
"on `date +%Y-%m-%d`.\\n\"" ;; \
|
|
*) ;; \
|
|
esac; \
|
|
files="$(all-Banner-files)"; \
|
|
if test -n "$$files"; then \
|
|
echo "\"Available extensions:"; \
|
|
sed -e '/^#/d' -e 's/^[[:space:]]*/ /' $$files; \
|
|
echo "\""; \
|
|
fi) > $@T
|
|
mv -f $@T $@
|