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authorUlrich Drepper <drepper@redhat.com>2004-01-13 08:36:54 +0000
committerUlrich Drepper <drepper@redhat.com>2004-01-13 08:36:54 +0000
commited20b3d9cc5ce78fd71f32c47b2eb7a897c7a25d (patch)
treec4ea660173f2c8cc138e8f0f1c64055a156c5036 /configure.in
parent1c563add69af03557ba47a4a13790d821133478c (diff)
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Update.
2004-01-13  Ulrich Drepper  <drepper@redhat.com>

	* Makeconfig: Define relro-LDFLAGS if have-z-relro==yes.  Add it to
	LDFLAGS.so and LDFLAGS-rtld.
	(+link): Add relro-LDFLAGS.
	* Makeconfig (shlib.lds): Place __libc_subfreeres, __libc_atexit, and
	__libc_thread_subfreeres sections after .jcr section.
	* config.make.in: Add have-z-relro.
	* configure.in: Add check for -z relro option.
	* include/link.h (struct link_map): Add relro_addr and relro_size
	members.
	* elf/dl-load.c (_dl_map_object_from_fd): Recognize PT_GNU_RELRO.
	* elf/dl-reloc.c (_dl_relocate_object): At the end, make relro
	part of loaded segments read-only.
	* elf/elf.h: Define PT_GNU_RELRO.
	* elf/rtld.c (_dl_start): Recognize PT_GNU_RELRO of ld.so.
	(dl_main): Recognize PT_GNU_RELRO of the application.  Call
	_dl_debug_initialize and initialize l_info[DT_DEBUG] before
	relocations.
Diffstat (limited to 'configure.in')
-rw-r--r--configure.in10
1 files changed, 10 insertions, 0 deletions
diff --git a/configure.in b/configure.in
index 77e91e30c7..9d2b347e8f 100644
--- a/configure.in
+++ b/configure.in
@@ -1283,6 +1283,16 @@ EOF
   rm -f conftest*])
   AC_SUBST(libc_cv_z_initfirst)
 
+  AC_CACHE_CHECK(for -z relro option,
+		 libc_cv_z_relro, [dnl
+  if AC_TRY_COMMAND([${CC-cc} -v --help 2>&1|grep "z relro" 1>&AS_MESSAGE_LOG_FD])
+  then
+    libc_cv_z_relro=yes
+  else
+    libc_cv_z_relro=no
+  fi])
+  AC_SUBST(libc_cv_z_relro)
+
   AC_CACHE_CHECK(for -Bgroup option,
 		 libc_cv_Bgroup, [dnl
   cat > conftest.c <<EOF