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Allow building by non-*nix systems.

pull/2/head
Richard Shaw 2019-04-09 15:48:43 -05:00
parent e384428ac6
commit d4f8bf0dec
1 changed files with 14 additions and 10 deletions
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24
CMakeLists.txt
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@ -28,25 +28,29 @@ endif("${CMAKE_SOURCE_DIR}" STREQUAL "${CMAKE_BINARY_DIR}")
# Set default flags
set(CMAKE_C_FLAGS "-Wall -W -Wextra -Wno-unused-function -O3 -g -I. -MD ${CMAKE_C_FLAGS}")
execute_process(COMMAND grep -c "avx2" /proc/cpuinfo
OUTPUT_VARIABLE AVX2)
execute_process(COMMAND grep -c "avx " /proc/cpuinfo
OUTPUT_VARIABLE AVX)
execute_process(COMMAND grep -c "neon" /proc/cpuinfo
OUTPUT_VARIABLE NEON)
message("AVX2: ${AVX2} AVX: ${AVX} NEON: ${NEON}")
if(UNIX)
execute_process(COMMAND grep -c "avx2" /proc/cpuinfo
OUTPUT_VARIABLE AVX2)
execute_process(COMMAND grep -c "avx " /proc/cpuinfo
OUTPUT_VARIABLE AVX)
execute_process(COMMAND grep -c "neon" /proc/cpuinfo
OUTPUT_VARIABLE NEON)
else()
message(STATUS "System is not *nix, processor specific optimizations cannot be determined.")
message(" You can try setting them manually, e.g.: -DAVX2=1 or -DAVX=1 or -DNEON=1")
endif()
if(${AVX2} GREATER 0)
if(${AVX2} OR ${AVX2} GREATER 0)
message(STATUS "avx2 processor flags found.")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mavx2 -mfma")
elseif(${AVX} GREATER 0)
elseif(${AVX} OR ${AVX} GREATER 0)
# AVX2 machines will also match on AVX
message(STATUS "avx processor flags found.")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mavx")
endif()
# RPi
if(${NEON} GREATER 0)
if(${NEON} OR ${NEON} GREATER 0)
message(STATUS "neon processor flags found.")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mfpu=neon -march=armv8-a -mtune=cortex-a53")
endif()