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Message-ID: <tip-596a9f6768af58d7034f6ebe559a0d489ae61467@git.kernel.org>
Date:   Tue, 17 Apr 2018 05:31:20 -0700
From:   tip-bot for Laura Abbott <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     mingo@...nel.org, tglx@...utronix.de, peterz@...radead.org,
        hpa@...or.com, yamada.masahiro@...ionext.com,
        linux-kernel@...r.kernel.org, jpoimboe@...hat.com,
        torvalds@...ux-foundation.org, labbott@...hat.com
Subject: [tip:core/urgent] objtool: Support HOSTCFLAGS and HOSTLDFLAGS

Commit-ID:  596a9f6768af58d7034f6ebe559a0d489ae61467
Gitweb:     https://git.kernel.org/tip/596a9f6768af58d7034f6ebe559a0d489ae61467
Author:     Laura Abbott <labbott@...hat.com>
AuthorDate: Thu, 12 Apr 2018 14:21:54 -0500
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Tue, 17 Apr 2018 07:59:42 +0200

objtool: Support HOSTCFLAGS and HOSTLDFLAGS

It may be useful to compile host programs with different flags (e.g.
hardening). Ensure that objtool picks up the appropriate flags.

Signed-off-by: Laura Abbott <labbott@...hat.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@...hat.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: linux-kbuild@...r.kernel.org
Link: http://lkml.kernel.org/r/05a360681176f1423cb2fde8faae3a0a0261afc5.1523560825.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 tools/objtool/Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/objtool/Makefile b/tools/objtool/Makefile
index 8ae824dbfca3..f76d9914686a 100644
--- a/tools/objtool/Makefile
+++ b/tools/objtool/Makefile
@@ -31,8 +31,8 @@ INCLUDES := -I$(srctree)/tools/include \
 	    -I$(srctree)/tools/arch/$(HOSTARCH)/include/uapi \
 	    -I$(srctree)/tools/objtool/arch/$(ARCH)/include
 WARNINGS := $(EXTRA_WARNINGS) -Wno-switch-default -Wno-switch-enum -Wno-packed
-CFLAGS   += -Wall -Werror $(WARNINGS) -fomit-frame-pointer -O2 -g $(INCLUDES)
-LDFLAGS  += -lelf $(LIBSUBCMD)
+CFLAGS   += -Werror $(WARNINGS) $(HOSTCFLAGS) -g $(INCLUDES)
+LDFLAGS  += -lelf $(LIBSUBCMD) $(HOSTLDFLAGS)
 
 # Allow old libelf to be used:
 elfshdr := $(shell echo '$(pound)include <libelf.h>' | $(CC) $(CFLAGS) -x c -E - | grep elf_getshdr)

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