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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Peter Jones <pjones@redhat.com>
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Date: Thu, 25 Jun 2015 15:41:06 -0400
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Subject: [PATCH] Make it possible to enabled --build-id=sha1
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Signed-off-by: Peter Jones <pjones@redhat.com>
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---
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configure.ac | 8 ++++++++
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acinclude.m4 | 19 +++++++++++++++++++
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2 files changed, 27 insertions(+)
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diff --git a/configure.ac b/configure.ac
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index 0d0e6782a1..302300711f 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -1442,7 +1442,15 @@ grub_PROG_TARGET_CC
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if test "x$TARGET_APPLE_LINKER" != x1 ; then
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grub_PROG_OBJCOPY_ABSOLUTE
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fi
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+
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+AC_ARG_ENABLE([build-id],
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+ [AS_HELP_STRING([--enable-build-id],
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+ [ask the linker to supply build-id notes (default=no)])])
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+if test x$enable_build_id = xyes; then
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+grub_PROG_LD_BUILD_ID_SHA1
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+else
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grub_PROG_LD_BUILD_ID_NONE
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+fi
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if test "x$target_cpu" = xi386; then
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if test "$platform" != emu && test "x$TARGET_APPLE_LINKER" != x1 ; then
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if test ! -z "$TARGET_IMG_LDSCRIPT"; then
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diff --git a/acinclude.m4 b/acinclude.m4
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index 6e14bb553c..21238fcfd0 100644
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--- a/acinclude.m4
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+++ b/acinclude.m4
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@@ -136,6 +136,25 @@ if test "x$grub_cv_prog_ld_build_id_none" = xyes; then
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fi
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])
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+dnl Supply --build-id=sha1 to ld if building modules.
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+dnl This suppresses warnings from ld on some systems
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+AC_DEFUN([grub_PROG_LD_BUILD_ID_SHA1],
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+[AC_MSG_CHECKING([whether linker accepts --build-id=sha1])
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+AC_CACHE_VAL(grub_cv_prog_ld_build_id_sha1,
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+[save_LDFLAGS="$LDFLAGS"
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+LDFLAGS="$LDFLAGS -Wl,--build-id=sha1"
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+AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
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+ [grub_cv_prog_ld_build_id_sha1=yes],
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+ [grub_cv_prog_ld_build_id_sha1=no])
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+LDFLAGS="$save_LDFLAGS"
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+])
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+AC_MSG_RESULT([$grub_cv_prog_ld_build_id_sha1])
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+
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+if test "x$grub_cv_prog_ld_build_id_sha1" = xyes; then
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+ TARGET_LDFLAGS="$TARGET_LDFLAGS -Wl,--build-id=sha1"
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+fi
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+])
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+
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dnl Check nm
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AC_DEFUN([grub_PROG_NM_WORKS],
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[AC_MSG_CHECKING([whether nm works])
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