[PATCH 1/2] bpftool: Allow to add compiler flags via EXTRA_CFLAGS variable

[Jiri Olsa]

Adding EXTRA_CFLAGS allowing user to specify extra flags
for CFLAGS variable.

Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
---
 tools/bpf/bpftool/Makefile | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile
index 74288a2197ab..5bfa07e3f2f7 100644
--- a/tools/bpf/bpftool/Makefile
+++ b/tools/bpf/bpftool/Makefile
@@ -46,6 +46,10 @@ CFLAGS += -DPACKAGE='"bpftool"' -D__EXPORTED_HEADERS__ \
 	-I$(srctree)/tools/lib/bpf \
 	-I$(srctree)/tools/perf
 CFLAGS += -DBPFTOOL_VERSION='"$(BPFTOOL_VERSION)"'
+ifneq ($(EXTRA_CFLAGS),)
+CFLAGS += $(EXTRA_CFLAGS)
+endif
+
 LIBS = -lelf -lbfd -lopcodes $(LIBBPF)
 
 INSTALL ?= install
-- 
2.17.2