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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-v1-1-2f9ed7d1c49f@valentinobst.de/
Fixes: 8e289f4542 ("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>
13 lines
244 B
Makefile
13 lines
244 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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CFLAGS = -g -Wall -O2 -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE
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CFLAGS += $(KHDR_INCLUDES)
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TEST_GEN_PROGS := resctrl_tests
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LOCAL_HDRS += $(wildcard *.h)
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include ../lib.mk
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$(OUTPUT)/resctrl_tests: $(wildcard *.c)
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