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cmake: detect rdtsc in CMake

main
Anonymous Maarten 2023-03-22 01:05:36 +01:00 committed by Anonymous Maarten
parent e2f51bf38e
commit 97c3077678
2 changed files with 20 additions and 0 deletions
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19
CMakeLists.txt
View File

@ -370,6 +370,7 @@ set_option(SDL_ASSEMBLY "Enable assembly routines" ${SDL_ASSEMBLY_DEF
dep_option(SDL_AVX "Use AVX assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
dep_option(SDL_AVX2 "Use AVX2 assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
dep_option(SDL_AVX512 "Use AVX512 assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
dep_option(SDL_RDTSC "Use RDTSC assembly routine(s)" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
dep_option(SDL_SSE "Use SSE assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
dep_option(SDL_SSE2 "Use SSE2 assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
dep_option(SDL_SSE3 "Use SSE3 assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
@ -714,6 +715,20 @@ endif()
if(SDL_ASSEMBLY)
set(HAVE_ASSEMBLY TRUE)
if(SDL_RDTSC)
check_c_source_compiles("
#if defined(_MSC_VER)
# include <intrin.h>
#else
# include <x86intrin.h>
#endif
int main(int argc, char *argv[]) {
return (int)__rdtsc();
}" COMPILER_SUPPORTS_RDTSC)
if(COMPILER_SUPPORTS_RDTSC)
set(HAVE_RDTSC TRUE)
endif()
endif()
if(SDL_MMX)
cmake_push_check_state()
if(USE_GCC OR USE_CLANG)
@ -1028,6 +1043,10 @@ if(SDL_ASSEMBLY)
endif()
endif()
if(NOT HAVE_RDTSC)
set(SDL_DISABLE_RDTSC 1)
endif()
if(NOT HAVE_MMX)
set(SDL_DISABLE_MMX 1)
endif()

1
include/build_config/SDL_build_config.h.cmake
View File

@ -585,6 +585,7 @@ typedef unsigned int uintptr_t;
#endif /* !_STDINT_H_ && !HAVE_STDINT_H */
/* Configure use of intrinsics */
#cmakedefine SDL_DISABLE_RDTSC 1
#cmakedefine SDL_DISABLE_SSE 1
#cmakedefine SDL_DISABLE_SSE2 1
#cmakedefine SDL_DISABLE_SSE3 1