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authorUlrich Drepper <drepper@redhat.com>2001-08-26 09:17:23 +0000
committerUlrich Drepper <drepper@redhat.com>2001-08-26 09:17:23 +0000
commita711b01d34ca5de9857ca5d19235812674fccee6 (patch)
tree1073e9cf9b096ff80eee7263a6b885cc161f2e43 /configure.in
parent7c69dc8bc888762333f5ccf1c8c7fb5883ffc6ed (diff)
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Update.
2001-08-26 Ulrich Drepper <drepper@redhat.com> * config.h.in: Add HAVE_Z_COMBRELOC. * configure.in: Add test for -z combreloc. * sysdeps/i386/dl-machine.h (elf_machine_rel): Minor cleanups and optimizations. Use HAVE_Z_COMBRELOC to avoid generaton of R_386_RELATIVE handling for ld.so startup.
Diffstat (limited to 'configure.in')
-rw-r--r--configure.in20
1 files changed, 19 insertions, 1 deletions
diff --git a/configure.in b/configure.in
index 5962b91340..719856e2b7 100644
--- a/configure.in
+++ b/configure.in
@@ -255,7 +255,7 @@ gnu* | linux* | sysv4* | solaris2* | irix6*)
aix*)
# These systems are always xcoff
xcoff=yes
- elf=no
+ elf=no
;;
esac
@@ -1061,6 +1061,24 @@ EOF
fi
rm -f conftest*])
AC_SUBST(libc_cv_Bgroup)
+
+ AC_CACHE_CHECK(for -z combreloc,
+ libc_cv_z_combreloc, [dnl
+ cat > conftest.c <<EOF
+int foo (void) { return 0; }
+EOF
+ if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c -Wl,-z,combreloc 1>&AC_FD_CC])
+ then
+dnl The following test is a bit weak. We must use a tool which can test
+dnl cross-platform since the gcc used can be a cross compiler. Without
+dnl introducing new options this is not easily doable. Instead use a tool
+dnl which always is cross-platform: readelf. To detect whether -z combreloc
+dnl look for a section named .rel.dyn.
+ if readelf -S conftest.so | fgrep .rel.dyn > /dev/null; then
+ AC_DEFINE(HAVE_Z_COMBRELOC)
+ fi
+ fi
+ rm -f conftest*])
fi
if test $elf != yes; then