Commit-ID: 60d526f7fa6246b8e32d5b45610d625a5608d988 Gitweb: http://git.kernel.org/tip/60d526f7fa6246b8e32d5b45610d625a5608d988 Author: Steven Rostedt <srostedt@xxxxxxxxxx> AuthorDate: Tue, 20 Oct 2009 19:19:34 -0400 Committer: Ingo Molnar <mingo@xxxxxxx> CommitDate: Wed, 21 Oct 2009 13:39:57 +0200 perf tools: Add 'make DEBUG=1' to remove the -O6 cflag 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 <rostedt@xxxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx> Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> LKML-Reference: <20091020232033.984323261@xxxxxxxxxxx> Signed-off-by: Ingo Molnar <mingo@xxxxxxx> --- tools/perf/Makefile | 9 ++++++++- 1 files changed, 8 insertions(+), 1 deletions(-) diff --git a/tools/perf/Makefile b/tools/perf/Makefile index 64c6b7b..65e6e52 100644 --- a/tools/perf/Makefile +++ b/tools/perf/Makefile @@ -201,7 +201,14 @@ 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) -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html