Update.

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.

1 files changed, 55 insertions, 9 deletions

diff --git a/Makerules b/Makerules
index 5f938dd..78089e6 100644
--- a/Makerules
+++ b/Makerules
@@ -413,29 +413,75 @@ endif
 lib%.so: lib%_pic.a $(+preinit) $(+postinit) $(+interp)
 	$(build-shlib)
 
-define build-shlib
-$(LINK.o) -shared -Wl,-O1 -o $@ $(sysdep-LDFLAGS) $(config-LDFLAGS)  \
+define build-shlib-helper
+$(LINK.o) -shared -Wl,-O1 $(sysdep-LDFLAGS) $(config-LDFLAGS) \
 	  $(extra-B-$(@F:lib%.so=%).so) -B$(csu-objpfx) \
 	  $(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
 	  -Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \
 	  $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
-	  -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link) \
-	  -Wl,--whole-archive \
+	  -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
+endef
+
+ifeq (yes,$(elf))
+# binutils only position loadable notes into the first page for binaries,
+# not for shared objects
+define build-shlib
+$(build-shlib-helper) \
+	  -o $@.new $(csu-objpfx)/abi-note.o -Wl,--verbose \
+	  $(LDLIBS-$(@F:lib%.so=%).so) 2>&1 | \
+	  sed -e '/^=========/,/^=========/!d;/^=========/d' \
+	      -e 's/^.*\.hash[ 	]*:.*$$/  .note.ABI-tag : { *(.note.ABI-tag) } &/' \
+	  > $@.lds; \
+	  rm -f $@.new; \
+	  $(build-shlib-helper) -o $@ -T $@.lds \
+	  -Wl,--whole-archive $(csu-objpfx)/abi-note.o \
+	  $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
+	  $(no-whole-archive) $(LDLIBS-$(@F:lib%.so=%).so); \
+	  rm -f $@.lds
+endef
+else
+define build-shlib
+$(build-shlib-helper) \
+	  -o $@ -Wl,--whole-archive \
 	  $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
 	  $(no-whole-archive) $(LDLIBS-$(@F:lib%.so=%).so)
 endef
+endif
+
+define build-module-helper
+$(LINK.o) -shared $(sysdep-LDFLAGS) $(config-LDFLAGS) \
+	  -B$(csu-objpfx) $(load-map-file) \
+	  $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
+	  -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
+endef
 
 # This macro is similar to build-shlib but it does not define a soname
 # and it does not depend on the destination name to start with `lib'.
+ifeq (yes,$(elf))
+# binutils only position loadable notes into the first page for binaries,
+# not for shared objects
 define build-module
-$(LINK.o) -shared -o $@ $(sysdep-LDFLAGS) $(config-LDFLAGS)  \
-	  -B$(csu-objpfx) $(load-map-file) \
-	  $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
-	  -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link) \
-	  -Wl,--whole-archive \
+$(build-module-helper) \
+	  -o $@.new $(csu-objpfx)/abi-note.o -Wl,--verbose \
+	  $(LDLIBS-$(@F:lib%.so=%).so) 2>&1 | \
+	  sed -e '/^=========/,/^=========/!d;/^=========/d' \
+	      -e 's/^.*\.hash[ 	]*:.*$$/  .note.ABI-tag : { *(.note.ABI-tag) } &/' \
+	  > $@.lds; \
+	  rm -f $@.new; \
+	  $(build-module-helper) -o $@ -T $@.lds \
+	  -Wl,--whole-archive $(csu-objpfx)/abi-note.o \
+	  $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
+	  $(no-whole-archive) $(LDLIBS-$(@F:lib%.so=%).so); \
+	  rm -f $@.lds
+endef
+else
+define build-module
+$(build-module-helper) \
+	  -o $@ -Wl,--whole-archive \
 	  $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
 	  $(no-whole-archive) $(LDLIBS-$(@F:%.so=%).so)
 endef
+endif
 
 # Don't try to use -lc when making libc.so itself.
 # Also omits crti.o and crtn.o, which we do not want