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| author | Michael S. Tsirkin <mst@redhat.com> | 2009-11-22 13:13:35 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-11-23 07:55:57 +0100 |
| commit | 81516c5fc83a13a1d12f466aa7e14f5fd62a63ce (patch) | |
| tree | cf69a671dae720bbf1cd97f3191e0d975b57b60b | |
| parent | perf report: Do map lookups in resolve_callchain() (diff) | |
| download | linux-81516c5fc83a13a1d12f466aa7e14f5fd62a63ce.tar.xz linux-81516c5fc83a13a1d12f466aa7e14f5fd62a63ce.zip | |
perf: Use default compiler mode by default
gcc with no flags typically is a sane default for systems to
use, and looking at the running kernel is probably broken for
cross-builds anyway, so let's not do this. Add EXTRA_CFLAGS so
that users can override default gcc mode if they want to.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arjan van de Ven <arjan@infradead.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <20091122121335.GA24254@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | tools/perf/Makefile | 20 |
1 files changed, 3 insertions, 17 deletions
diff --git a/tools/perf/Makefile b/tools/perf/Makefile index fce4c3f051ef..3ef6621bf6cd 100644 --- a/tools/perf/Makefile +++ b/tools/perf/Makefile @@ -148,6 +148,8 @@ all:: # broken, or spawning external process is slower than built-in grep perf has). # # Define LDFLAGS=-static to build a static binary. +# +# Define EXTRA_CFLAGS=-m64 or EXTRA_CFLAGS=-m32 as appropriate for cross-builds. PERF-VERSION-FILE: .FORCE-PERF-VERSION-FILE @$(SHELL_PATH) util/PERF-VERSION-GEN @@ -160,22 +162,6 @@ uname_R := $(shell sh -c 'uname -r 2>/dev/null || echo not') uname_P := $(shell sh -c 'uname -p 2>/dev/null || echo not') uname_V := $(shell sh -c 'uname -v 2>/dev/null || echo not') -# -# Add -m32 for cross-builds: -# -ifdef NO_64BIT - MBITS := -m32 -else - # - # If we're on a 64-bit kernel (except ia64), use -m64: - # - ifneq ($(uname_M),ia64) - ifneq ($(patsubst %64,%,$(uname_M)),$(uname_M)) - MBITS := -m64 - endif - endif -endif - # CFLAGS and LDFLAGS are for the users to override from the command line. # @@ -212,7 +198,7 @@ ifndef PERF_DEBUG CFLAGS_OPTIMIZE = -O6 endif -CFLAGS = $(MBITS) -ggdb3 -Wall -Wextra -std=gnu99 -Werror $(CFLAGS_OPTIMIZE) -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS) +CFLAGS = -ggdb3 -Wall -Wextra -std=gnu99 -Werror $(CFLAGS_OPTIMIZE) -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS) $(EXTRA_CFLAGS) EXTLIBS = -lpthread -lrt -lelf -lm ALL_CFLAGS = $(CFLAGS) ALL_LDFLAGS = $(LDFLAGS) |