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-rw-r--r--tools/testing/selftests/intel_pstate/Makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/testing/selftests/intel_pstate/Makefile b/tools/testing/selftests/intel_pstate/Makefile
index 05d66ef50c97..f45372cb00fe 100644
--- a/tools/testing/selftests/intel_pstate/Makefile
+++ b/tools/testing/selftests/intel_pstate/Makefile
@@ -1,5 +1,5 @@
# SPDX-License-Identifier: GPL-2.0
-CFLAGS := $(CFLAGS) -Wall -D_GNU_SOURCE
+CFLAGS := $(CFLAGS) -Wall
LDLIBS += -lm
ARCH ?= $(shell uname -m 2>/dev/null || echo not)