Re: [PATCH v2 1/3] tools build: Add feature test for libelf with ZSTD

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On Wed, Dec 11, 2024 at 09:31:12AM +0000, Leo Yan wrote:
> Add a test for checking if libelf supports ZSTD compress algorithm.
> 
> The macro ELFCOMPRESS_ZSTD is defined for the algorithm, pass it as an
> argument to the elf_compress() function.  If the build succeeds, it
> means the feature is supported.
> 
> Signed-off-by: Leo Yan <leo.yan@xxxxxxx>

lgtm

Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx>

jirka

> ---
>  tools/build/Makefile.feature           | 1 +
>  tools/build/feature/Makefile           | 4 ++++
>  tools/build/feature/test-all.c         | 4 ++++
>  tools/build/feature/test-libelf-zstd.c | 9 +++++++++
>  4 files changed, 18 insertions(+)
>  create mode 100644 tools/build/feature/test-libelf-zstd.c
> 
> diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature
> index bca47d136f05..b2884bc23775 100644
> --- a/tools/build/Makefile.feature
> +++ b/tools/build/Makefile.feature
> @@ -43,6 +43,7 @@ FEATURE_TESTS_BASIC :=                  \
>          libelf-getphdrnum               \
>          libelf-gelf_getnote             \
>          libelf-getshdrstrndx            \
> +        libelf-zstd                     \
>          libnuma                         \
>          numa_num_possible_cpus          \
>          libperl                         \
> diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
> index 043dfd00fce7..f12b89103d7a 100644
> --- a/tools/build/feature/Makefile
> +++ b/tools/build/feature/Makefile
> @@ -28,6 +28,7 @@ FILES=                                          \
>           test-libelf-getphdrnum.bin             \
>           test-libelf-gelf_getnote.bin           \
>           test-libelf-getshdrstrndx.bin          \
> +         test-libelf-zstd.bin                   \
>           test-libdebuginfod.bin                 \
>           test-libnuma.bin                       \
>           test-numa_num_possible_cpus.bin        \
> @@ -196,6 +197,9 @@ $(OUTPUT)test-libelf-gelf_getnote.bin:
>  $(OUTPUT)test-libelf-getshdrstrndx.bin:
>  	$(BUILD) -lelf
>  
> +$(OUTPUT)test-libelf-zstd.bin:
> +	$(BUILD) -lelf -lz -lzstd
> +
>  $(OUTPUT)test-libdebuginfod.bin:
>  	$(BUILD) -ldebuginfod
>  
> diff --git a/tools/build/feature/test-all.c b/tools/build/feature/test-all.c
> index 80ac297f8196..67125f967860 100644
> --- a/tools/build/feature/test-all.c
> +++ b/tools/build/feature/test-all.c
> @@ -58,6 +58,10 @@
>  # include "test-libelf-getshdrstrndx.c"
>  #undef main
>  
> +#define main main_test_libelf_zstd
> +# include "test-libelf-zstd.c"
> +#undef main
> +
>  #define main main_test_libslang
>  # include "test-libslang.c"
>  #undef main
> diff --git a/tools/build/feature/test-libelf-zstd.c b/tools/build/feature/test-libelf-zstd.c
> new file mode 100644
> index 000000000000..a1324a1db3bb
> --- /dev/null
> +++ b/tools/build/feature/test-libelf-zstd.c
> @@ -0,0 +1,9 @@
> +// SPDX-License-Identifier: GPL-2.0
> +#include <stddef.h>
> +#include <libelf.h>
> +
> +int main(void)
> +{
> +	elf_compress(NULL, ELFCOMPRESS_ZSTD, 0);
> +	return 0;
> +}
> -- 
> 2.34.1
> 




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