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e8a1a2530f
MacOS is weird and its CPU flags are separated in two separate fields returned by the sysctl interface. To get around this, we need to test both of them, so here goes Co-authored-by: Roman Grundkiewicz <rgrundkiewicz@gmail.com>
177 lines
7.2 KiB
CMake
177 lines
7.2 KiB
CMake
# Check if SSE/AVX instructions are available on the machine where
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# the project is compiled.
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IF(CMAKE_SYSTEM_NAME MATCHES "Linux")
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EXEC_PROGRAM(cat ARGS "/proc/cpuinfo" OUTPUT_VARIABLE CPUINFO)
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STRING(REGEX REPLACE "^.*(sse2).*$" "\\1" SSE_THERE ${CPUINFO})
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STRING(COMPARE EQUAL "sse2" "${SSE_THERE}" SSE2_TRUE)
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IF (SSE2_TRUE)
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set(SSE2_FOUND true CACHE BOOL "SSE2 available on host")
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ELSE (SSE2_TRUE)
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set(SSE2_FOUND false CACHE BOOL "SSE2 available on host")
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ENDIF (SSE2_TRUE)
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# /proc/cpuinfo apparently omits sse3 :(
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STRING(REGEX REPLACE "^.*[^s](sse3).*$" "\\1" SSE_THERE ${CPUINFO})
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STRING(COMPARE EQUAL "sse3" "${SSE_THERE}" SSE3_TRUE)
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IF (NOT SSE3_TRUE)
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STRING(REGEX REPLACE "^.*(T2300).*$" "\\1" SSE_THERE ${CPUINFO})
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STRING(COMPARE EQUAL "T2300" "${SSE_THERE}" SSE3_TRUE)
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ENDIF (NOT SSE3_TRUE)
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STRING(REGEX REPLACE "^.*(ssse3).*$" "\\1" SSE_THERE ${CPUINFO})
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STRING(COMPARE EQUAL "ssse3" "${SSE_THERE}" SSSE3_TRUE)
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IF (SSE3_TRUE OR SSSE3_TRUE)
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set(SSE3_FOUND true CACHE BOOL "SSE3 available on host")
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ELSE (SSE3_TRUE OR SSSE3_TRUE)
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set(SSE3_FOUND false CACHE BOOL "SSE3 available on host")
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ENDIF (SSE3_TRUE OR SSSE3_TRUE)
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IF (SSSE3_TRUE)
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set(SSSE3_FOUND true CACHE BOOL "SSSE3 available on host")
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ELSE (SSSE3_TRUE)
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set(SSSE3_FOUND false CACHE BOOL "SSSE3 available on host")
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ENDIF (SSSE3_TRUE)
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STRING(REGEX REPLACE "^.*(sse4_1).*$" "\\1" SSE_THERE ${CPUINFO})
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STRING(COMPARE EQUAL "sse4_1" "${SSE_THERE}" SSE41_TRUE)
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IF (SSE41_TRUE)
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set(SSE4_1_FOUND true CACHE BOOL "SSE4.1 available on host")
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ELSE (SSE41_TRUE)
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set(SSE4_1_FOUND false CACHE BOOL "SSE4.1 available on host")
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ENDIF (SSE41_TRUE)
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STRING(REGEX REPLACE "^.*(sse4_2).*$" "\\1" SSE_THERE ${CPUINFO})
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STRING(COMPARE EQUAL "sse4_2" "${SSE_THERE}" SSE42_TRUE)
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IF (SSE42_TRUE)
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set(SSE4_2_FOUND true CACHE BOOL "SSE4.2 available on host")
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ELSE (SSE42_TRUE)
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set(SSE4_2_FOUND false CACHE BOOL "SSE4.2 available on host")
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ENDIF (SSE42_TRUE)
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STRING(REGEX REPLACE "^.*(avx).*$" "\\1" SSE_THERE ${CPUINFO})
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STRING(COMPARE EQUAL "avx" "${SSE_THERE}" AVX_TRUE)
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IF (AVX_TRUE)
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set(AVX_FOUND true CACHE BOOL "AVX available on host")
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ELSE (AVX_TRUE)
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set(AVX_FOUND false CACHE BOOL "AVX available on host")
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ENDIF (AVX_TRUE)
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STRING(REGEX REPLACE "^.*(avx2).*$" "\\1" SSE_THERE ${CPUINFO})
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STRING(COMPARE EQUAL "avx2" "${SSE_THERE}" AVX2_TRUE)
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IF (AVX2_TRUE)
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set(AVX2_FOUND true CACHE BOOL "AVX2 available on host")
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ELSE (AVX2_TRUE)
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set(AVX2_FOUND false CACHE BOOL "AVX2 available on host")
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ENDIF (AVX2_TRUE)
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STRING(REGEX REPLACE "^.*(avx512).*$" "\\1" SSE_THERE ${CPUINFO})
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STRING(COMPARE EQUAL "avx512" "${SSE_THERE}" AVX512_TRUE)
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IF (AVX512_TRUE)
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set(AVX512_FOUND true CACHE BOOL "AVX512 available on host")
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ELSE (AVX512_TRUE)
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set(AVX512_FOUND false CACHE BOOL "AVX512 available on host")
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ENDIF (AVX512_TRUE)
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ELSEIF(CMAKE_SYSTEM_NAME MATCHES "Darwin")
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EXEC_PROGRAM("/usr/sbin/sysctl -n machdep.cpu.features machdep.cpu.leaf7_features" OUTPUT_VARIABLE CPUINFO)
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STRING(REGEX REPLACE "^.*[^S](SSE2).*$" "\\1" SSE_THERE ${CPUINFO})
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STRING(COMPARE EQUAL "SSE2" "${SSE_THERE}" SSE2_TRUE)
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IF (SSE2_TRUE)
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set(SSE2_FOUND true CACHE BOOL "SSE2 available on host")
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ELSE (SSE2_TRUE)
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set(SSE2_FOUND false CACHE BOOL "SSE2 available on host")
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ENDIF (SSE2_TRUE)
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STRING(REGEX REPLACE "^.*[^S](SSE3).*$" "\\1" SSE_THERE ${CPUINFO})
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STRING(COMPARE EQUAL "SSE3" "${SSE_THERE}" SSE3_TRUE)
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IF (SSE3_TRUE)
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set(SSE3_FOUND true CACHE BOOL "SSE3 available on host")
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ELSE (SSE3_TRUE)
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set(SSE3_FOUND false CACHE BOOL "SSE3 available on host")
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ENDIF (SSE3_TRUE)
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STRING(REGEX REPLACE "^.*(SSSE3).*$" "\\1" SSE_THERE ${CPUINFO})
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STRING(COMPARE EQUAL "SSSE3" "${SSE_THERE}" SSSE3_TRUE)
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IF (SSSE3_TRUE)
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set(SSSE3_FOUND true CACHE BOOL "SSSE3 available on host")
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ELSE (SSSE3_TRUE)
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set(SSSE3_FOUND false CACHE BOOL "SSSE3 available on host")
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ENDIF (SSSE3_TRUE)
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STRING(REGEX REPLACE "^.*(SSE4.1).*$" "\\1" SSE_THERE ${CPUINFO})
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STRING(COMPARE EQUAL "SSE4.1" "${SSE_THERE}" SSE41_TRUE)
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IF (SSE41_TRUE)
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set(SSE4_1_FOUND true CACHE BOOL "SSE4.1 available on host")
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ELSE (SSE41_TRUE)
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set(SSE4_1_FOUND false CACHE BOOL "SSE4.1 available on host")
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ENDIF (SSE41_TRUE)
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STRING(REGEX REPLACE "^.*(AVX).*$" "\\1" SSE_THERE ${CPUINFO})
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STRING(COMPARE EQUAL "AVX" "${SSE_THERE}" AVX_TRUE)
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IF (AVX_TRUE)
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set(AVX_FOUND true CACHE BOOL "AVX available on host")
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ELSE (AVX_TRUE)
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set(AVX_FOUND false CACHE BOOL "AVX available on host")
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ENDIF (AVX_TRUE)
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STRING(REGEX REPLACE "^.*(AVX2).*$" "\\1" SSE_THERE ${CPUINFO})
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STRING(COMPARE EQUAL "AVX2" "${SSE_THERE}" AVX2_TRUE)
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IF (AVX2_TRUE)
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set(AVX2_FOUND true CACHE BOOL "AVX2 available on host")
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ELSE (AVX2_TRUE)
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set(AVX2_FOUND false CACHE BOOL "AVX2 available on host")
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ENDIF (AVX2_TRUE)
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STRING(REGEX REPLACE "^.*(avx512).*$" "\\1" SSE_THERE ${CPUINFO})
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STRING(COMPARE EQUAL "avx512" "${SSE_THERE}" AVX512_TRUE)
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IF (AVX512_TRUE)
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set(AVX512_FOUND true CACHE BOOL "AVX512 available on host")
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ELSE (AVX512_TRUE)
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set(AVX512_FOUND false CACHE BOOL "AVX512 available on host")
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ENDIF (AVX512_TRUE)
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ELSEIF(CMAKE_SYSTEM_NAME MATCHES "Windows")
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# TODO
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set(SSE2_FOUND true CACHE BOOL "SSE2 available on host")
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set(SSE3_FOUND false CACHE BOOL "SSE3 available on host")
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set(SSSE3_FOUND false CACHE BOOL "SSSE3 available on host")
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set(SSE4_1_FOUND false CACHE BOOL "SSE4.1 available on host")
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set(AVX_FOUND false CACHE BOOL "AVX available on host")
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set(AVX2_FOUND false CACHE BOOL "AVX2 available on host")
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set(AVX512_FOUND false CACHE BOOL "AVX512 available on host")
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ELSE(CMAKE_SYSTEM_NAME MATCHES "Linux")
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set(SSE2_FOUND true CACHE BOOL "SSE2 available on host")
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set(SSE3_FOUND false CACHE BOOL "SSE3 available on host")
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set(SSSE3_FOUND false CACHE BOOL "SSSE3 available on host")
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set(SSE4_1_FOUND false CACHE BOOL "SSE4.1 available on host")
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set(AVX_FOUND false CACHE BOOL "AVX available on host")
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set(AVX2_FOUND false CACHE BOOL "AVX2 available on host")
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set(AVX512_FOUND false CACHE BOOL "AVX512 available on host")
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ENDIF(CMAKE_SYSTEM_NAME MATCHES "Linux")
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if(NOT SSE2_FOUND)
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MESSAGE(STATUS "Could not find hardware support for SSE2 on this machine.")
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endif(NOT SSE2_FOUND)
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if(NOT SSE3_FOUND)
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MESSAGE(STATUS "Could not find hardware support for SSE3 on this machine.")
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endif(NOT SSE3_FOUND)
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if(NOT SSSE3_FOUND)
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MESSAGE(STATUS "Could not find hardware support for SSSE3 on this machine.")
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endif(NOT SSSE3_FOUND)
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if(NOT SSE4_1_FOUND)
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MESSAGE(STATUS "Could not find hardware support for SSE4.1 on this machine.")
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endif(NOT SSE4_1_FOUND)
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if(NOT AVX_FOUND)
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MESSAGE(STATUS "Could not find hardware support for AVX on this machine.")
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endif(NOT AVX_FOUND)
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if(NOT AVX2_FOUND)
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MESSAGE(STATUS "Could not find hardware support for AVX2 on this machine.")
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endif(NOT AVX2_FOUND)
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if(NOT AVX512_FOUND)
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MESSAGE(STATUS "Could not find hardware support for AVX512 on this machine.")
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endif(NOT AVX512_FOUND)
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mark_as_advanced(SSE2_FOUND SSE3_FOUND SSSE3_FOUND SSE4_1_FOUND, AVX_FOUND, AVX2_FOUND, AVX512_FOUND)
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