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# check if we compile for IBM s390x |
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# |
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CHECK_C_SOURCE_COMPILES(" |
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#ifndef __s390x__ |
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#error |
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#endif |
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int main() {return 0;} |
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" HAS_S390X_SUPPORT) |
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# |
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# Check for IBM S390X - VX extensions |
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# |
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if(ZLIB_WITH_CRC32VX AND HAS_S390X_SUPPORT) |
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# preset the compiler specific flags |
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if (CMAKE_C_COMPILER_ID STREQUAL "Clang") |
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set(VGFMAFLAG "-fzvector") |
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else() |
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set(VGFMAFLAG "-mzarch") |
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endif(CMAKE_C_COMPILER_ID STREQUAL "Clang") |
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set(S390X_VX_TEST |
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"#ifndef __s390x__ \n\ |
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#error \n\ |
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#endif \n\ |
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#include <vecintrin.h> \n\ |
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int main(void) { \ |
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unsigned long long a __attribute__((vector_size(16))) = { 0 }; \ |
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unsigned long long b __attribute__((vector_size(16))) = { 0 }; \ |
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unsigned char c __attribute__((vector_size(16))) = { 0 }; \ |
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c = vec_gfmsum_accum_128(a, b, c); \ |
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return c[0]; \ |
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}") |
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# cflags already contains a valid march |
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set(CMAKE_REQUIRED_FLAGS "${VGFMAFLAG}") |
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check_c_source_compiles("${S390X_VX_TEST}" HAS_S390X_VX_SUPPORT) |
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unset(CMAKE_REQUIRED_FLAGS) |
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# or set march for our compile units |
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if(NOT HAS_S390X_VX_SUPPORT) |
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set(CMAKE_REQUIRED_FLAGS "${VGFMAFLAG} -march=z13") |
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check_c_source_compiles("${S390X_VX_TEST}" HAS_Z13_S390X_VX_SUPPORT) |
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unset(CMAKE_REQUIRED_FLAGS ) |
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list(APPEND VGFMAFLAG "-march=z13") |
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endif(NOT HAS_S390X_VX_SUPPORT) |
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# prepare compiling for s390x |
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if(HAS_S390X_VX_SUPPORT OR HAS_Z13_S390X_VX_SUPPORT) |
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if(ZLIB_BUILD_SHARED) |
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target_sources(zlib |
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PRIVATE |
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crc32_vx.c |
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crc32_vx_hooks.h) |
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target_compile_definitions(zlib PUBLIC -DHAVE_S390X_VX=1) |
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endif(ZLIB_BUILD_SHARED) |
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if(ZLIB_BUILD_STATIC) |
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target_sources(zlibstatic |
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PRIVATE |
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crc32_vx.c |
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crc32_vx_hooks.h) |
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target_compile_definitions(zlibstatic PUBLIC -DHAVE_S390X_VX=1) |
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endif(ZLIB_BUILD_STATIC) |
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set_source_files_properties( |
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crc32_vx.c |
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PROPERTIES COMPILE_OPTIONS "${VGFMAFLAG}") |
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endif(HAS_S390X_VX_SUPPORT OR HAS_Z13_S390X_VX_SUPPORT) |
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endif(ZLIB_WITH_CRC32VX AND HAS_S390X_SUPPORT) |
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