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- improve speed for ARMv7 processors by specifying hardware float calculations, and tuning it specifically for the Cortex-a7 CPU (for Raspberry Pi 2).

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Rachael Alexanderson 2017-10-25 09:31:37 -04:00
parent b8406228e6
commit 2fd5d0da54
1 changed files with 2 additions and 2 deletions
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4
src/CMakeLists.txt
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@ -342,9 +342,9 @@ if( ZD_CMAKE_COMPILER_IS_GNUCXX_COMPATIBLE )
if(${CMAKE_SYSTEM_PROCESSOR} MATCHES "arm")
set (USE_ARMV8 0 CACHE BOOL "Use ARMv8 instructions - Raspberry Pi 3")
if (USE_ARMV8)
set( CMAKE_CXX_FLAGS "-mcpu=cortex-a53 -mfpu=neon-fp-armv8 -mtune=cortex-a53 -mhard-float -DNO_SSE ${CMAKE_CXX_FLAGS}" )
set( CMAKE_CXX_FLAGS "-mcpu=cortex-a53 -mfpu=neon-fp-armv8 -mtune=cortex-a53 -mhard-float -DNO_SSE ${CMAKE_CXX_FLAGS}" )
else ()
set( CMAKE_CXX_FLAGS "-mfpu=neon -DNO_SSE ${CMAKE_CXX_FLAGS}" )
set( CMAKE_CXX_FLAGS "-mcpu=cortex-a7 -mfpu=neon-vfpv4 -mtune=cortex-a7 -mhard-float -DNO_SSE ${CMAKE_CXX_FLAGS}" )
endif ()
endif ()