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macro(check_yasm_support _object_format _good_result _better_result)
execute_process(
COMMAND yasm -f "${_object_format}" ${CMAKE_SOURCE_DIR}/src/common/crc32c_intel_fast_asm.s -o /dev/null
RESULT_VARIABLE no_yasm
OUTPUT_QUIET)
if(NOT no_yasm)
if(CMAKE_SYSTEM_PROCESSOR MATCHES "amd64|x86_64")
set(save_quiet ${CMAKE_REQUIRED_QUIET})
set(CMAKE_REQUIRED_QUIET true)
include(CheckCXXSourceCompiles)
check_cxx_source_compiles("
#if defined(__x86_64__) && defined(__ILP32__)
#error x32
#endif
int main() {}
" not_arch_x32)
set(CMAKE_REQUIRED_QUIET ${save_quiet})
if(not_arch_x32)
set(${_good_result} TRUE)
execute_process(COMMAND yasm -f ${object_format} -i
${CMAKE_SOURCE_DIR}/src/isa-l/include/
${CMAKE_SOURCE_DIR}/src/isa-l/erasure_code/gf_vect_dot_prod_avx2.asm
-o /dev/null
RESULT_VARIABLE rc
OUTPUT_QUIET)
if(NOT rc)
set(${_better_result} TRUE)
endif(NOT rc)
endif(not_arch_x32)
endif(CMAKE_SYSTEM_PROCESSOR MATCHES "amd64|x86_64")
endif(NOT no_yasm)
if(no_yasm)
message(STATUS "Could NOT find Yasm")
elseif(NOT not_arch_x32)
message(STATUS "Found Yasm: but x86_64 with x32 ABI is not supported")
elseif(${_better_result})
message(STATUS "Found Yasm: good -- capable of assembling x86_64")
elseif(${_good_result})
message(STATUS "Found Yasm: better -- capable of assembling AVX2")
endif()
endmacro()
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