[PATCH] trace-cmd: append to CFLAGS instead of being overriden

[Chase Douglas]

Most package builders apply their own CFLAGS, often set during the make
invocation. The trace-cmd internal CFLAGS is overriden in this case.
Make sure the important flags are appended.

Signed-off-by: Chase Douglas <chase.douglas@xxxxxxxxxxxxx>
---
 Makefile |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/Makefile b/Makefile
index a278510..08fc4ca 100644
--- a/Makefile
+++ b/Makefile
@@ -183,7 +183,11 @@ KERNELSHARK_VERSION = $(KS_VERSION).$(KS_PATCHLEVEL).$(KS_EXTRAVERSION)
 
 INCLUDES = -I. -I/usr/local/include $(CONFIG_INCLUDES)
 
-CFLAGS = -g -Wall $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ)
+# Set compile option CFLAGS if not set elsewhere
+CFLAGS ?= -g -Wall
+
+# Append required CFLAGS
+override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ)
 
 ifeq ($(VERBOSE),1)
   Q =
-- 
1.7.0.4

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