mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-23 19:30:10 +00:00
a986484f67
2001-03-12 Jakub Jelinek <jakub@redhat.com> * csu/Makefile (abi-tag.h): Define OS and version separately, allow version to be overriden from config.h. * csu/abi-note.S: Use OS and version separately, include config.h. * elf/dl-load.c (_dl_osversion): New. (_dl_map_object_from_fd): Kill some warnings. (open_verify): Check .note.ABI-tag of the library if present. * elf/Makefile (CPPFLAGS-dl-load.c): Add -I$(csu-objpfx). * elf/cache.c (struct cache_entry): Add osversion. (print_entry): Print osversion. (print_cache): Pass osversion to it. (compare): Sort according to osversion. (save_cache): Set osversion. (add_to_cache): Add osversion argument. * sysdeps/generic/ldconfig.h (add_to_cache, process_file, process_elf_file): Add osversion argument. * elf/readlib.c (process_file): Likewise. * sysdeps/generic/readelflib.c (process_elf_file): Likewise. * sysdeps/unix/sysv/linux/ia64/readelflib.c (process_elf_file, process_elf32_file, process_elf64_file): Likewise. * sysdeps/unix/sysv/linux/i386/readelflib.c (process_elf_file, process_elf32_file, process_elf64_file): Likewise. * sysdeps/unix/sysv/linux/sparc/readelflib.c (process_elf_file, process_elf32_file, process_elf64_file): Likewise. * elf/ldconfig.c (manual_link): Pass it. (search_dir): Issue diagnostic if two libs with the same soname in the same directory have different .note.ABI-tag. Record osversion in dlib_entry and use it from there. (struct lib_entry): Remove. (struct dlib_entry): Add osversion. * sysdeps/generic/dl-cache.c (_dl_load_cache_lookup): Check osversion. * sysdeps/generic/dl-cache.h (struct file_entry_new): Replace __unused field with osversion. * sysdeps/generic/ldsodefs.h (_dl_osversion): Declare. * sysdeps/unix/sysv/linux/init-first.c: Include ldsodefs.h. * sysdeps/unix/sysv/linux/dl-osinfo.h (DL_SYSDEP_OSCHECK): Save kernel version in _dl_osversion. * sysdeps/unix/sysv/linux/configure.in: Define __ABI_TAG_VERSION. * Makerules (build-shlib-helper, build-module-helper): New. (build-shlib, build-module-helper): Make sure .note.ABI-tag comes early. * config.h.in (__ABI_TAG_VERSION): Add. * elf/dl-minimal.c (__strtoul_internal): Set endptr on return. * sysdeps/unix/sysv/linux/i386/dl-librecon.h (EXTRA_LD_ENVVARS): Handle LD_ASSUME_KERNEL. * sysdeps/unix/sysv/linux/dl-librecon.h: New.
217 lines
7.4 KiB
Makefile
217 lines
7.4 KiB
Makefile
# Makefile for csu code for GNU C library.
|
|
|
|
# Copyright (C) 1995,1996,1997,1998,1999,2000,2001 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 check_fds
|
|
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$(start-installed-name) \
|
|
b$(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 = $(objpfx)version-info.h
|
|
|
|
all: # Make this the default target; it will be defined in Rules.
|
|
|
|
include ../Makeconfig
|
|
|
|
ifeq (yes,$(build-bounded))
|
|
extra-objs += b$(start-installed-name)
|
|
install-lib += b$(start-installed-name)
|
|
endif
|
|
|
|
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)
|
|
$(objpfx)b$(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 $< $@
|
|
$(objpfx)b$(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.
|
|
$(objpfx)g$(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))):
|
|
@-rm -f $(@:.o=.c)
|
|
echo > $(@:.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' $< | \
|
|
while read conf tagos tagver; do \
|
|
test `expr '$(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, \
|
|
$(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:\\n\""; \
|
|
sed -e '/^#/d' -e 's/^[[:space:]]*/ /' \
|
|
-e 's/\(^.*$$\)/\"\1\\n\"/' $$files; \
|
|
fi) > $@T
|
|
mv -f $@T $@
|