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authorMichael S. Tsirkin <mst@redhat.com>2009-11-22 07:13:35 -0500
committerIngo Molnar <mingo@elte.hu>2009-11-23 01:55:57 -0500
commit81516c5fc83a13a1d12f466aa7e14f5fd62a63ce (patch)
treecf69a671dae720bbf1cd97f3191e0d975b57b60b /tools/perf/Makefile
parent50e5095afa8c2be0f35e5c0e21d5f7912340e8f2 (diff)
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>
Diffstat (limited to 'tools/perf/Makefile')
-rw-r--r--tools/perf/Makefile20
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::
148# broken, or spawning external process is slower than built-in grep perf has). 148# broken, or spawning external process is slower than built-in grep perf has).
149# 149#
150# Define LDFLAGS=-static to build a static binary. 150# Define LDFLAGS=-static to build a static binary.
151#
152# Define EXTRA_CFLAGS=-m64 or EXTRA_CFLAGS=-m32 as appropriate for cross-builds.
151 153
152PERF-VERSION-FILE: .FORCE-PERF-VERSION-FILE 154PERF-VERSION-FILE: .FORCE-PERF-VERSION-FILE
153 @$(SHELL_PATH) util/PERF-VERSION-GEN 155 @$(SHELL_PATH) util/PERF-VERSION-GEN
@@ -160,22 +162,6 @@ uname_R := $(shell sh -c 'uname -r 2>/dev/null || echo not')
160uname_P := $(shell sh -c 'uname -p 2>/dev/null || echo not') 162uname_P := $(shell sh -c 'uname -p 2>/dev/null || echo not')
161uname_V := $(shell sh -c 'uname -v 2>/dev/null || echo not') 163uname_V := $(shell sh -c 'uname -v 2>/dev/null || echo not')
162 164
163#
164# Add -m32 for cross-builds:
165#
166ifdef NO_64BIT
167 MBITS := -m32
168else
169 #
170 # If we're on a 64-bit kernel (except ia64), use -m64:
171 #
172 ifneq ($(uname_M),ia64)
173 ifneq ($(patsubst %64,%,$(uname_M)),$(uname_M))
174 MBITS := -m64
175 endif
176 endif
177endif
178
179# CFLAGS and LDFLAGS are for the users to override from the command line. 165# CFLAGS and LDFLAGS are for the users to override from the command line.
180 166
181# 167#
@@ -212,7 +198,7 @@ ifndef PERF_DEBUG
212 CFLAGS_OPTIMIZE = -O6 198 CFLAGS_OPTIMIZE = -O6
213endif 199endif
214 200
215CFLAGS = $(MBITS) -ggdb3 -Wall -Wextra -std=gnu99 -Werror $(CFLAGS_OPTIMIZE) -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS) 201CFLAGS = -ggdb3 -Wall -Wextra -std=gnu99 -Werror $(CFLAGS_OPTIMIZE) -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS) $(EXTRA_CFLAGS)
216EXTLIBS = -lpthread -lrt -lelf -lm 202EXTLIBS = -lpthread -lrt -lelf -lm
217ALL_CFLAGS = $(CFLAGS) 203ALL_CFLAGS = $(CFLAGS)
218ALL_LDFLAGS = $(LDFLAGS) 204ALL_LDFLAGS = $(LDFLAGS)