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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)
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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`