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From: Laura Abbott <labbott@redhat.com>
To: Masahiro Yamada <yamada.masahiro@socionext.com>,
	Michal Marek <michal.lkml@markovi.net>,
	Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Laura Abbott <labbott@redhat.com>,
	linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 2/3] objtool: Support HOSTCFLAGS and HOSTLDFLAGS
Date: Wed, 28 Mar 2018 17:48:04 -0700	[thread overview]
Message-ID: <20180329004805.7278-3-labbott@redhat.com> (raw)
In-Reply-To: <20180329004805.7278-1-labbott@redhat.com>

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@redhat.com>
---
 tools/objtool/Makefile | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/tools/objtool/Makefile b/tools/objtool/Makefile
index e6acc281dd37..0ff3bcac1ca9 100644
--- a/tools/objtool/Makefile
+++ b/tools/objtool/Makefile
@@ -31,8 +31,9 @@ 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   += -Wall -Werror $(WARNINGS) $(HOSTCFLAGS) -fomit-frame-pointer -O2 -g \
+	    $(INCLUDES)
+LDFLAGS  += -lelf $(LIBSUBCMD) $(HOSTLDFLAGS)
 
 # Allow old libelf to be used:
 elfshdr := $(shell echo '\#include <libelf.h>' | $(CC) $(CFLAGS) -x c -E - | grep elf_getshdr)
-- 
2.16.2


  parent reply	other threads:[~2018-03-29  0:48 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-29  0:48 [PATCH 0/3] HOSTCFLAGS and HOSTLDFLAGS from the environment Laura Abbott
2018-03-29  0:48 ` [PATCH 1/3] kbuild: Support HOSTLDFLAGS Laura Abbott
2018-04-05  5:13   ` Masahiro Yamada
2018-03-29  0:48 ` Laura Abbott [this message]
2018-04-05  4:42   ` [PATCH 2/3] objtool: Support HOSTCFLAGS and HOSTLDFLAGS Masahiro Yamada
2018-04-05 22:01     ` Laura Abbott
2018-04-06 17:27   ` Josh Poimboeuf
2018-03-29  0:48 ` [PATCH 3/3] kbuild: Allow passing additional " Laura Abbott
2018-04-05  4:59   ` Masahiro Yamada
2018-04-05 21:51     ` Laura Abbott

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