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selftests: always install UAPI headers to the correct directory

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Currently the UAPI headers are always installed into the source directory.
When building out-of-tree this doesn't work, as the include path will be
wrong and it dirties the source tree, leading to complains by kbuild.

Make sure the 'headers' target installs the UAPI headers in the correctly.

The real target directory can come from multiple places. To handle them all
extract the target directory from KHDR_INCLUDES.

Link: https://lore.kernel.org/r/20250918-kselftest-uapi-out-of-tree-v1-1-f4434f28adcd@linutronix.de
Reported-by: Jason Gunthorpe <jgg@nvidia.com>
Closes: https://lore.kernel.org/lkml/20250917153209.GA2023406@nvidia.com/
Fixes: 1a59f5d315 ("selftests: Add headers target")
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Thomas Weißschuh 2025-09-18 11:56:36 +02:00 committed by Shuah Khan
parent 3e23a3f688
commit 2c55daf7de
1 changed files with 4 additions and 1 deletions
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5
tools/testing/selftests/lib.mk
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@ -228,7 +228,10 @@ $(OUTPUT)/%:%.S
$(LINK.S) $^ $(LDLIBS) -o $@
endif
# Extract the expected header directory
khdr_output := $(patsubst %/usr/include,%,$(filter %/usr/include,$(KHDR_INCLUDES)))
headers:
$(Q)$(MAKE) -C $(top_srcdir) headers
$(Q)$(MAKE) -f $(top_srcdir)/Makefile -C $(khdr_output) headers
.PHONY: run_tests all clean install emit_tests gen_mods_dir clean_mods_dir headers