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https://github.com/rcornwell/sims.git
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80 lines
2.0 KiB
CMake
80 lines
2.0 KiB
CMake
## Check for various GNU-specific floating point math flags
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##
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## Not entirely sure that they will make a huge difference to code
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## generation in the simulators.
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set(EXTRA_TARGET_CFLAGS)
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set(CMAKE_REQUIRED_FLAGS "-msse")
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check_c_source_compiles("
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#ifdef __MINGW32__
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#include <_mingw.h>
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#ifdef __MINGW64_VERSION_MAJOR
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#include <intrin.h>
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#else
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#include <xmmintrin.h>
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#endif
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#else
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#include <xmmintrin.h>
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#endif
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#ifndef __SSE__
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#error Assembler CPP flag not enabled
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#endif
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int main(int argc, char **argv) { }" HAVE_SSE)
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if(HAVE_SSE)
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list(APPEND EXTRA_TARGET_CFLAGS "-msse")
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endif()
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set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
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set(CMAKE_REQUIRED_FLAGS "-msse2")
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check_c_source_compiles("
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#ifdef __MINGW32__
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#include <_mingw.h>
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#ifdef __MINGW64_VERSION_MAJOR
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#include <intrin.h>
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#else
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#include <emmintrin.h>
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#endif
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#else
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#include <emmintrin.h>
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#endif
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#ifndef __SSE2__
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#error Assembler CPP flag not enabled
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#endif
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int main(int argc, char **argv) { }" HAVE_SSE2)
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if(HAVE_SSE2)
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list(APPEND EXTRA_TARGET_CFLAGS "-msse2")
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endif()
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set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
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set(CMAKE_REQUIRED_FLAGS "-msse3")
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check_c_source_compiles("
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#ifdef __MINGW32__
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#include <_mingw.h>
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#ifdef __MINGW64_VERSION_MAJOR
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#include <intrin.h>
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#else
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#include <pmmintrin.h>
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#endif
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#else
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#include <pmmintrin.h>
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#endif
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#ifndef __SSE3__
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#error Assembler CPP flag not enabled
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#endif
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int main(int argc, char **argv) { }" HAVE_SSE3)
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if(HAVE_SSE3)
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list(APPEND EXTRA_TARGET_CFLAGS "-msse3")
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endif()
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set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
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if(SSE OR SSE2 OR SSE3)
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if(USE_GCC)
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check_c_compiler_flag(-mfpmath=387 HAVE_FP_387)
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if(HAVE_FP_387)
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list(APPEND EXTRA_TARGET_CFLAGS "-mfpmath=387")
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endif()
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endif()
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set(HAVE_SSEMATH TRUE)
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endif()
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