Similar to commit 835a50753579 ("selftests/bpf: Add -fms-extensions to
bpf build flags") and commit 639f58a0f480 ("bpftool: Fix build warnings
due to MS extensions")

The kernel is now built with -fms-extensions, therefore
generated vmlinux.h contains types like:
struct slab {
   ..
   struct freelist_counters;
};

Use -fms-extensions and -Wno-microsoft-anon-tag flags
to build bpf programs that #include "vmlinux.h"

Signed-off-by: Benjamin Tissoires <[email protected]>
---
 tools/testing/selftests/hid/Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/testing/selftests/hid/Makefile 
b/tools/testing/selftests/hid/Makefile
index 2839d2612ce3..50ec9e0406ab 100644
--- a/tools/testing/selftests/hid/Makefile
+++ b/tools/testing/selftests/hid/Makefile
@@ -184,6 +184,8 @@ MENDIAN=$(if 
$(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
 
 CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG))
 BPF_CFLAGS = -g -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN)          \
+            -Wno-microsoft-anon-tag                                    \
+            -fms-extensions                                            \
             -I$(INCLUDE_DIR)
 
 CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \

-- 
2.52.0


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