_GNU_SOURCE is provided by lib.mk, so it should be dropped to prevent redefinition warnings. Signed-off-by: Edward Liaw <edliaw@xxxxxxxxxx> --- tools/testing/selftests/ptp/testptp.c | 1 - 1 file changed, 1 deletion(-) diff --git a/tools/testing/selftests/ptp/testptp.c b/tools/testing/selftests/ptp/testptp.c index 011252fe238c..ea3c48b97468 100644 --- a/tools/testing/selftests/ptp/testptp.c +++ b/tools/testing/selftests/ptp/testptp.c @@ -4,7 +4,6 @@ * * Copyright (C) 2010 OMICRON electronics GmbH */ -#define _GNU_SOURCE #define __SANE_USERSPACE_TYPES__ /* For PPC64, to get LL64 types */ #include <errno.h> #include <fcntl.h> -- 2.45.1.288.g0e0cd299f1-goog