[PATCH v6 07/13] selftests/iommu: Drop redundant -D_GNU_SOURCE CFLAGS in Makefile

[Edward Liaw]

-D_GNU_SOURCE= will be provided by lib.mk CFLAGS, so -D_GNU_SOURCE
should be dropped to prevent redefinition warnings.

Signed-off-by: Edward Liaw <edliaw@xxxxxxxxxx>
---
 tools/testing/selftests/iommu/Makefile | 2 --
 1 file changed, 2 deletions(-)

diff --git a/tools/testing/selftests/iommu/Makefile b/tools/testing/selftests/iommu/Makefile
index 32c5fdfd0eef..fd6477911f24 100644
--- a/tools/testing/selftests/iommu/Makefile
+++ b/tools/testing/selftests/iommu/Makefile
@@ -2,8 +2,6 @@
 CFLAGS += -Wall -O2 -Wno-unused-function
 CFLAGS += $(KHDR_INCLUDES)
 
-CFLAGS += -D_GNU_SOURCE
-
 TEST_GEN_PROGS :=
 TEST_GEN_PROGS += iommufd
 TEST_GEN_PROGS += iommufd_fail_nth
-- 
2.45.2.741.gdbec12cfda-goog