From 92ad88fe72194ccb72a5f34fa3c76078bfc89400 Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Wed, 27 Feb 2019 13:21:46 -0800 Subject: [PATCH] elf/Makefile: Run IFUNC tests if binutils supports IFUNC We should run IFUNC tests with --disable-multi-arch if the toolchain supports IFUNCs. For correctness, --disable-multi-arch must not remove IFUNC support from the loader. Tested on x86-64, x32 and i686 with and without --disable-multi-arch. * configure.ac (have-ifunc): New LIBC_CONFIG_VAR. * configure: Regenerated. * elf/Makefile: Run IFUNC tests if binutils supports IFUNC. Reviewed-by: Tulio Magno Quites Machado Filho --- ChangeLog | 6 ++++++ configure | 2 ++ configure.ac | 1 + elf/Makefile | 2 +- 4 files changed, 10 insertions(+), 1 deletion(-) diff --git a/ChangeLog b/ChangeLog index 902ae1b84e..ed05044fe8 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +2019-02-27 H.J. Lu + + * configure.ac (have-ifunc): New LIBC_CONFIG_VAR. + * configure: Regenerated. + * elf/Makefile: Run IFUNC tests if binutils supports IFUNC. + 2019-02-27 Adhemerval Zanella * sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy.c: Define ifunc diff --git a/configure b/configure index 2643db9fb7..c773c487b5 100755 --- a/configure +++ b/configure @@ -6794,6 +6794,8 @@ if test x"$libc_cv_ld_gnu_indirect_function" = xyes; then $as_echo "#define HAVE_IFUNC 1" >>confdefs.h fi +config_vars="$config_vars +have-ifunc = $libc_cv_ld_gnu_indirect_function" if test x"$libc_cv_gcc_indirect_function" = xyes; then $as_echo "#define HAVE_GCC_IFUNC 1" >>confdefs.h diff --git a/configure.ac b/configure.ac index ad50e290d4..598ba6c4ae 100644 --- a/configure.ac +++ b/configure.ac @@ -1804,6 +1804,7 @@ AC_SUBST(libc_cv_gcc_unwind_find_fde) if test x"$libc_cv_ld_gnu_indirect_function" = xyes; then AC_DEFINE(HAVE_IFUNC) fi +LIBC_CONFIG_VAR([have-ifunc], [$libc_cv_ld_gnu_indirect_function]) if test x"$libc_cv_gcc_indirect_function" = xyes; then AC_DEFINE(HAVE_GCC_IFUNC) diff --git a/elf/Makefile b/elf/Makefile index faec577d1c..e44960e5fe 100644 --- a/elf/Makefile +++ b/elf/Makefile @@ -321,7 +321,7 @@ modules-names-nobuild := filtmod1 tests += $(tests-static) -ifneq (no,$(multi-arch)) +ifeq (yes,$(have-ifunc)) tests-ifuncstatic := ifuncmain1static ifuncmain1picstatic \ ifuncmain2static ifuncmain2picstatic \ ifuncmain4static ifuncmain4picstatic \