linux/tools/build/feature/test-libelf-zstd.c

// SPDX-License-Identifier: GPL-2.0
#include <stddef.h>
#include <libelf.h>

int main(void)
{
	elf_compress(NULL, ELFCOMPRESS_ZSTD, 0);
	return 0;
}
tools build: Add feature test for libelf with ZSTD The macro ELFCOMPRESS_ZSTD defines the compress algorithm, which was introduced in the commit ("libelf: Document and make ELFCOMPRESS_ZSTD usable with old system elf.h") of the repository elfutils-0.188-67. Therefore, libelf 0.189 and later versions require to link the libzstd library. Add a test for checking if libelf supports ZSTD algorithm. Pass the macro ELFCOMPRESS_ZSTD as an argument to the elf_compress() function. If the build succeeds, it means the feature is supported. Reviewed-by: Quentin Monnet <qmo@kernel.org> Signed-off-by: Leo Yan <leo.yan@arm.com> Tested-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Quentin Monnet <qmo@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Eduard Zingerman <eddyz87@gmail.com> Cc: Guilherme Amadio <amadio@gentoo.org> Cc: Hao Luo <haoluo@google.com> Cc: Ian Rogers <irogers@google.com> Cc: James Clark <james.clark@linaro.org> Cc: John Fastabend <john.fastabend@gmail.com> Cc: KP Singh <kpsingh@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Martin KaFai Lau <martin.lau@linux.dev> Cc: Nick Terrell <terrelln@fb.com> Cc: Song Liu <song@kernel.org> Cc: Stanislav Fomichev <sdf@google.com> Cc: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20241215221223.293205-2-leo.yan@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 2024-12-15 22:12:21 +00:00			`// SPDX-License-Identifier: GPL-2.0`
			`#include <stddef.h>`
			`#include <libelf.h>`

			`int main(void)`
			`{`
			`elf_compress(NULL, ELFCOMPRESS_ZSTD, 0);`
			`return 0;`
			`}`