5.15-stable review patch. If anyone has any objections, please let me know.
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From: John Hubbard jhubbard@nvidia.com
[ Upstream commit d8171aa4ca72f1a67bf3c14c59441d63c1d2585f ]
First of all, in order to build with clang at all, one must first apply Valentin Obst's build fix for LLVM [1]. Once that is done, then when building with clang, via:
make LLVM=1 -C tools/testing/selftests
...the following error occurs:
clang: error: cannot specify -o when generating multiple output files
This is because clang, unlike gcc, won't accept invocations of this form:
clang file1.c header2.h
Fix this by using selftests/lib.mk facilities for tracking local header file dependencies: add them to LOCAL_HDRS, leaving only the .c files to be passed to the compiler.
[1] https://lore.kernel.org/all/20240329-selftests-libmk-llvm-rfc-v1-1-2f9ed7d1c...
Fixes: 8e289f454289 ("selftests/resctrl: Add resctrl.h into build deps") Cc: Ilpo Järvinen ilpo.jarvinen@linux.intel.com Signed-off-by: John Hubbard jhubbard@nvidia.com Acked-by: Reinette Chatre reinette.chatre@intel.com Signed-off-by: Shuah Khan skhan@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- tools/testing/selftests/resctrl/Makefile | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/resctrl/Makefile b/tools/testing/selftests/resctrl/Makefile index 2deac2031de9e..021863f86053a 100644 --- a/tools/testing/selftests/resctrl/Makefile +++ b/tools/testing/selftests/resctrl/Makefile @@ -5,6 +5,8 @@ CFLAGS += $(KHDR_INCLUDES)
TEST_GEN_PROGS := resctrl_tests
+LOCAL_HDRS += $(wildcard *.h) + include ../lib.mk
-$(OUTPUT)/resctrl_tests: $(wildcard *.[ch]) +$(OUTPUT)/resctrl_tests: $(wildcard *.c)