From bdcd66a767a861370e55a3c2d624383a1f2ec2f5 Mon Sep 17 00:00:00 2001 From: Peter Jones Date: Thu, 25 Jun 2015 15:41:06 -0400 Subject: [PATCH 3/6] Make it possible to enabled --build-id=sha1 Signed-off-by: Peter Jones --- acinclude.m4 | 19 +++++++++++++++++++ configure.ac | 8 ++++++++ 2 files changed, 27 insertions(+) diff --git a/acinclude.m4 b/acinclude.m4 index 609c4f2..8dd0989 100644 --- a/acinclude.m4 +++ b/acinclude.m4 @@ -136,6 +136,25 @@ if test "x$grub_cv_prog_ld_build_id_none" = xyes; then fi ]) +dnl Supply --build-id=sha1 to ld if building modules. +dnl This suppresses warnings from ld on some systems +AC_DEFUN([grub_PROG_LD_BUILD_ID_SHA1], +[AC_MSG_CHECKING([whether linker accepts --build-id=sha1]) +AC_CACHE_VAL(grub_cv_prog_ld_build_id_sha1, +[save_LDFLAGS="$LDFLAGS" +LDFLAGS="$LDFLAGS -Wl,--build-id=sha1" +AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[]])], + [grub_cv_prog_ld_build_id_sha1=yes], + [grub_cv_prog_ld_build_id_sha1=no]) +LDFLAGS="$save_LDFLAGS" +]) +AC_MSG_RESULT([$grub_cv_prog_ld_build_id_sha1]) + +if test "x$grub_cv_prog_ld_build_id_sha1" = xyes; then + TARGET_LDFLAGS="$TARGET_LDFLAGS -Wl,--build-id=sha1" +fi +]) + dnl Check nm AC_DEFUN([grub_PROG_NM_WORKS], [AC_MSG_CHECKING([whether nm works]) diff --git a/configure.ac b/configure.ac index 991cb15..8d780e3 100644 --- a/configure.ac +++ b/configure.ac @@ -1202,7 +1202,15 @@ grub_PROG_TARGET_CC if test "x$TARGET_APPLE_LINKER" != x1 ; then grub_PROG_OBJCOPY_ABSOLUTE fi + +AC_ARG_ENABLE([build-id], + [AS_HELP_STRING([--enable-build-id], + [ask the linker to supply build-id notes (default=no)])]) +if test x$enable_build_id = xyes; then +grub_PROG_LD_BUILD_ID_SHA1 +else grub_PROG_LD_BUILD_ID_NONE +fi if test "x$target_cpu" = xi386; then if test "$platform" != emu && test "x$TARGET_APPLE_LINKER" != x1 ; then if test ! -z "$TARGET_IMG_LDSCRIPT"; then -- 2.4.3