68 lines
2.2 KiB
CMake
68 lines
2.2 KiB
CMake
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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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