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-rw-r--r--tools/perf/Makefile20
1 files changed, 3 insertions, 17 deletions
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index fce4c3f051e..3ef6621bf6c 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)