[tip:perf/urgent] tools iio: Override CFLAGS assignments

[tip-bot for Jiri Olsa]

Commit-ID:  536cdb684d2d5139708d290b9dc124b1420886c1
Gitweb:     https://git.kernel.org/tip/536cdb684d2d5139708d290b9dc124b1420886c1
Author:     Jiri Olsa <jolsa@xxxxxxxxxx>
AuthorDate: Thu, 3 Jan 2019 17:13:50 +0100
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Fri, 4 Jan 2019 12:54:49 -0300

tools iio: Override CFLAGS assignments

So user could specify outside CFLAGS values.

Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Cc: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Cc: Hartmut Knaack <knaack.h@xxxxxx>
Cc: Jonathan Cameron <jic23@xxxxxxxxxx>
Cc: Lars-Peter Clausen <lars@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/20190103161350.11446-3-jolsa@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/iio/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/iio/Makefile b/tools/iio/Makefile
index 332ed2f6c2c2..e22378dba244 100644
--- a/tools/iio/Makefile
+++ b/tools/iio/Makefile
@@ -12,7 +12,7 @@ endif
 # (this improves performance and avoids hard-to-debug behaviour);
 MAKEFLAGS += -r
 
-CFLAGS += -O2 -Wall -g -D_GNU_SOURCE -I$(OUTPUT)include
+override CFLAGS += -O2 -Wall -g -D_GNU_SOURCE -I$(OUTPUT)include
 
 ALL_TARGETS := iio_event_monitor lsiio iio_generic_buffer
 ALL_PROGRAMS := $(patsubst %,$(OUTPUT)%,$(ALL_TARGETS))