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authorH.J. Lu <hjl.tools@gmail.com>2015-11-14 12:00:16 -0800
committerH.J. Lu <hjl.tools@gmail.com>2015-11-14 12:00:38 -0800
commit89569c8bb6b386db4881af0e96514d2ec5c35478 (patch)
treeb7f12201cf9012de909b9ddd96f820499e3c0584 /configure.ac
parent909f8e14dbe4073d75a776b4a9f50e5cc450f161 (diff)
downloadglibc-89569c8bb6b386db4881af0e96514d2ec5c35478.tar.gz
Run tst-prelink test for GLOB_DAT reloc
Run tst-prelink test on targets with GLOB_DAT relocaton. * config.make.in (have-glob-dat-reloc): New. * configure.ac (libc_cv_has_glob_dat): New. Set to yes if target supports GLOB_DAT relocaton. AC_SUBST. * configure: Regenerated. * elf/Makefile (tests): Add tst-prelink. (tests-special): Add $(objpfx)tst-prelink-cmp.out. (tst-prelink-ENV): New. ($(objpfx)tst-prelink-conflict.out): Likewise. ($(objpfx)tst-prelink-cmp.out): Likewise. * sysdeps/x86/tst-prelink.c: Moved to ... * elf/tst-prelink.c: Here. * sysdeps/x86/tst-prelink.exp: Moved to ... * elf/tst-prelink.exp: Here. * sysdeps/x86/Makefile (tests): Don't add tst-prelink. (tst-prelink-ENV): Removed. ($(objpfx)tst-prelink-conflict.out): Likewise. ($(objpfx)tst-prelink-cmp.out): Likewise. (tests-special): Don't add $(objpfx)tst-prelink-cmp.out.
Diffstat (limited to 'configure.ac')
-rw-r--r--configure.ac23
1 files changed, 23 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 3fdf992f79..cd37433cae 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1340,6 +1340,29 @@ $ac_try"
use_default_link=$libc_cv_use_default_link
fi
+AC_CACHE_CHECK(for GLOB_DAT reloc,
+ libc_cv_has_glob_dat, [dnl
+cat > conftest.c <<EOF
+extern int mumble;
+int foo (void) { return mumble; }
+EOF
+if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
+ -fPIC -shared -o conftest.so conftest.c
+ -nostdlib -nostartfiles
+ 1>&AS_MESSAGE_LOG_FD])
+then
+dnl look for GLOB_DAT relocation.
+ if $READELF -rW conftest.so | grep '_GLOB_DAT' > /dev/null; then
+ libc_cv_has_glob_dat=yes
+ else
+ libc_cv_has_glob_dat=no
+ fi
+else
+ libc_cv_has_glob_dat=no
+fi
+rm -f conftest*])
+AC_SUBST(libc_cv_has_glob_dat)
+
AC_CACHE_CHECK(linker output format, libc_cv_output_format, [dnl
if libc_cv_output_format=`
${CC-cc} -nostartfiles -nostdlib -Wl,--print-output-format 2>&AS_MESSAGE_LOG_FD`