Commit-ID: 8ea58f1e8b11cca3087b294779bf5959bf89cc10
Gitweb: https://git.kernel.org/tip/8ea58f1e8b11cca3087b294779bf5959bf89cc10
Author: Nathan Chancellor <natechancel...@gmail.com>
AuthorDate: Thu, 16 May 2019 12:49:42 -0500
Committer: Ingo Molnar <mi...@kernel.org>
CommitDate: Fri, 17 May 2019 11:10:42 +0200
objtool: Allow AR to be overridden with HOSTAR
Currently, this Makefile hardcodes GNU ar, meaning that if it is not
available, there is no way to supply a different one and the build will
fail.
$ make AR=llvm-ar CC=clang LD=ld.lld HOSTAR=llvm-ar HOSTCC=clang \
HOSTLD=ld.lld HOSTLDFLAGS=-fuse-ld=lld defconfig modules_prepare
...
AR /out/tools/objtool/libsubcmd.a
/bin/sh: 1: ar: not found
...
Follow the logic of HOST{CC,LD} and allow the user to specify a
different ar tool via HOSTAR (which is used elsewhere in other
tools/ Makefiles).
Signed-off-by: Nathan Chancellor <natechancel...@gmail.com>
Signed-off-by: Josh Poimboeuf <jpoim...@redhat.com>
Reviewed-by: Nick Desaulniers <ndesaulni...@google.com>
Reviewed-by: Mukesh Ojha <mo...@codeaurora.org>
Cc: <sta...@vger.kernel.org>
Cc: Linus Torvalds <torva...@linux-foundation.org>
Cc: Peter Zijlstra <pet...@infradead.org>
Cc: Thomas Gleixner <t...@linutronix.de>
Link:
http://lkml.kernel.org/r/80822a9353926c38fd7a152991c6292491a9d0e8.1558028966.git.jpoim...@redhat.com
Link: https://github.com/ClangBuiltLinux/linux/issues/481
Signed-off-by: Ingo Molnar <mi...@kernel.org>
---
tools/objtool/Makefile | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/tools/objtool/Makefile b/tools/objtool/Makefile
index 53f8be0f4a1f..88158239622b 100644
--- a/tools/objtool/Makefile
+++ b/tools/objtool/Makefile
@@ -7,11 +7,12 @@ ARCH := x86
endif
# always use the host compiler
+HOSTAR ?= ar
HOSTCC ?= gcc
HOSTLD ?= ld
+AR = $(HOSTAR)
CC = $(HOSTCC)
LD = $(HOSTLD)
-AR = ar
ifeq ($(srctree),)
srctree := $(patsubst %/,%,$(dir $(CURDIR)))
