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cmake_minimum_required(VERSION 3.18)
project(ISPCObjectGenex CXX ISPC)
if("${CMAKE_SYSTEM_NAME};${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "Darwin;arm64")
set(CMAKE_ISPC_INSTRUCTION_SETS "neon-i32x4")
set(numberOfTargets 1)
else()
set(CMAKE_ISPC_INSTRUCTION_SETS "sse2-i32x4;sse4-i16x8;avx1-i32x16;avx2-i32x4;avx512knl-i32x16;avx512skx-i32x8")
list(LENGTH CMAKE_ISPC_INSTRUCTION_SETS numberOfTargets)
math(EXPR numberOfTargets "${numberOfTargets}+1")
endif()
add_library(ispc_objects OBJECT
simple.ispc
)
target_compile_definitions(ispc_objects PRIVATE
$<$<COMPILE_LANG_AND_ID:ISPC,Intel>:M_PI=3.1415926535f>
)
set_target_properties(ispc_objects PROPERTIES POSITION_INDEPENDENT_CODE ON)
if(CMAKE_SIZEOF_VOID_P EQUAL 4)
set_source_files_properties(simple.ispc PROPERTIES COMPILE_OPTIONS "--arch=x86")
endif()
#Test ObjectFiles with file(GENERATE)
file(GENERATE
OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/gen_$<LOWER_CASE:$<CONFIG>/>path_to_objs.h
CONTENT [[
#ifndef path_to_objs
#define path_to_objs
#include <string>
static std::string obj_paths = "$<TARGET_OBJECTS:ispc_objects>";
#endif
]]
)
add_executable(ISPCObjectGenex main.cxx)
add_dependencies(ISPCObjectGenex ispc_objects)
target_compile_definitions(ISPCObjectGenex PRIVATE
"ExpectedISPCObjects=${numberOfTargets}"
"CONFIG_TYPE=gen_$<LOWER_CASE:$<CONFIG>>"
)
target_include_directories(ISPCObjectGenex PRIVATE ${CMAKE_CURRENT_BINARY_DIR} )
target_compile_features(ISPCObjectGenex PRIVATE cxx_std_11)
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