Selftests need kernel headers and glibc for compilation. In compilation of selftests, uapi headers from kernel source are used instead of default ones while glibc has already been compiled with different header files installed in the operating system. So there can be redefination warnings from compiler. These warnings can be suppressed by using -isystem to include the uapi headers.

Signed-off-by: Muhammad Usama Anjum usama.anjum@collabora.com --- tools/testing/selftests/Makefile | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index 4eda7c7c15694..0178b5c801656 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -130,14 +130,16 @@ ifneq ($(KBUILD_OUTPUT),) # $(realpath ...) resolves symlinks abs_objtree := $(realpath $(abs_objtree)) BUILD := $(abs_objtree)/kselftest - KHDR_INCLUDES := -I${abs_objtree}/usr/include + KHDR_INCLUDES := -isystem ${abs_objtree}/usr/include else BUILD := $(CURDIR) abs_srctree := $(shell cd $(top_srcdir) && pwd) - KHDR_INCLUDES := -I${abs_srctree}/usr/include + KHDR_INCLUDES := -isystem ${abs_srctree}/usr/include DEFAULT_INSTALL_HDR_PATH := 1 endif

+$(info $$KHDR_INCLUDES iss [${KHDR_INCLUDES}]) + # Prepare for headers install include $(top_srcdir)/scripts/subarch.include ARCH ?= $(SUBARCH)