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