From ac4642d045978eadc2886c97bd2066972ec26dca Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Tue, 20 Oct 2009 19:19:34 -0400 Subject: [PATCH] perf tools: Add 'make DEBUG=1' to remove the -O6 cflag commit 60d526f7fa6246b8e32d5b45610d625a5608d988 upstream. When using gdb to debug perf, it is practically impossible to use when perf is compiled with -O6. For developers, this patch adds the DEBUG feature to the make command line so that a developer can easily remove the optimization flag. LKML-Reference: <1255590330.8392.446.camel@twins> Signed-off-by: Steven Rostedt Cc: Peter Zijlstra Cc: Frederic Weisbecker Cc: Arnaldo Carvalho de Melo LKML-Reference: <20091020232033.984323261@goodmis.org> Signed-off-by: Ingo Molnar [bwh: Backport to 2.6.32] Signed-off-by: Greg Kroah-Hartman --- tools/perf/Makefile | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/tools/perf/Makefile b/tools/perf/Makefile index 3a018b535819..2528a6002953 100644 --- a/tools/perf/Makefile +++ b/tools/perf/Makefile @@ -200,7 +200,14 @@ EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wold-style-definition EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wstrict-prototypes EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wdeclaration-after-statement -CFLAGS = $(MBITS) -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -fstack-protector-all -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS) +ifeq ("$(origin DEBUG)", "command line") + PERF_DEBUG = $(DEBUG) +endif +ifndef PERF_DEBUG + CFLAGS_OPTIMIZE = -O6 +endif + +CFLAGS = $(MBITS) -ggdb3 -Wall -Wextra -std=gnu99 -Werror $(CFLAGS_OPTIMIZE) -fstack-protector-all -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS) LDFLAGS = -lpthread -lrt -lelf -lm ALL_CFLAGS = $(CFLAGS) ALL_LDFLAGS = $(LDFLAGS) -- 2.34.1