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| author | David Ahern <dsahern@gmail.com> | 2011-07-11 15:38:24 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-08-04 21:58:35 -0700 |
| commit | 64d488f079f68f58210f4c79c7e76b04a7c9db20 (patch) | |
| tree | 8af1eed3ac4b4466d2ac19c10f18e01dbd1b5296 /tools | |
| parent | 70c964e8a1baa869b7cc0b5af1b1514199e8ffc0 (diff) | |
| download | lwn-64d488f079f68f58210f4c79c7e76b04a7c9db20.tar.gz lwn-64d488f079f68f58210f4c79c7e76b04a7c9db20.zip | |
perf tools, x86: Fix 32-bit compile on 64-bit system
commit 08a4a43fc407d780bdde36d98f89c0dbb2a6be6b upstream.
Builds for 32-bit perf binaries on a 64-bit host currently fail
with this error:
[...]
bench/../../../arch/x86/lib/memcpy_64.S: Assembler messages:
bench/../../../arch/x86/lib/memcpy_64.S:29: Error: bad register name `%rdi'
bench/../../../arch/x86/lib/memcpy_64.S:34: Error: invalid instruction suffix for `movs'
bench/../../../arch/x86/lib/memcpy_64.S:50: Error: bad register name `%rdi'
bench/../../../arch/x86/lib/memcpy_64.S:61: Error: bad register name `%rdi'
...
The problem is the detection of the host arch without considering passed in
flags. This change fixes 32-bit builds via:
make EXTRA_CFLAGS=-m32
and 64-bit builds still reference the memcpy_64.S.
Signed-off-by: David Ahern <dsahern@gmail.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1310420304-21452-1-git-send-email-dsahern@gmail.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/Makefile | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/tools/perf/Makefile b/tools/perf/Makefile index 940257b5774e..c16836611d22 100644 --- a/tools/perf/Makefile +++ b/tools/perf/Makefile @@ -52,7 +52,10 @@ ifeq ($(ARCH),i386) endif ifeq ($(ARCH),x86_64) ARCH := x86 - IS_X86_64 := $(shell echo __x86_64__ | ${CC} -E -xc - | tail -n 1) + IS_X86_64 := 0 + ifeq (, $(findstring m32,$(EXTRA_CFLAGS))) + IS_X86_64 := $(shell echo __x86_64__ | ${CC} -E -xc - | tail -n 1) + endif ifeq (${IS_X86_64}, 1) RAW_ARCH := x86_64 ARCH_CFLAGS := -DARCH_X86_64 |