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Let user override ENOKI_NATIVE_FLAGS and ENOKI_ARCH_FLAGS #115

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Let user override ENOKI_NATIVE_FLAGS and ENOKI_ARCH_FLAGS #115

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21 changes: 16 additions & 5 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -45,7 +45,10 @@ endif()
string(TOUPPER "${CMAKE_BUILD_TYPE}" ENOKI_U_CMAKE_BUILD_TYPE)

set(ENOKI_CXXFLAGS_BACKUP ${CMAKE_CXX_FLAGS})
set(ENOKI_NATIVE_FLAGS "")

if (NOT DEFINED ENOKI_NATIVE_FLAGS)
set(ENOKI_NATIVE_FLAGS "")
endif()

if (MSVC)
set(ENOKI_ARCH_FLAGS_FILE archflags_win32.cpp)
Expand All @@ -64,11 +67,19 @@ endif()

# Clang refuses -march=native on ARM machines
if (${CMAKE_SYSTEM_PROCESSOR} MATCHES "armv7")
set(ENOKI_ARCH_FLAGS -march=armv7-a -mtune=cortex-a7 -mfpu=neon-vfpv4 -mfloat-abi=hard -mfp16-format=ieee)
set(ENOKI_NATIVE_FLAGS ${ENOKI_ARCH_FLAGS})
if (NOT DEFINED ENOKI_ARCH_FLAGS)
set(ENOKI_ARCH_FLAGS -march=armv7-a -mtune=cortex-a7 -mfpu=neon-vfpv4 -mfloat-abi=hard -mfp16-format=ieee)
endif()
if (NOT ENOKI_NATIVE_FLAGS)
set(ENOKI_NATIVE_FLAGS ${ENOKI_ARCH_FLAGS})
endif()
elseif (${CMAKE_SYSTEM_PROCESSOR} MATCHES "aarch64")
set(ENOKI_ARCH_FLAGS -march=armv8-a+simd -mtune=cortex-a53)
set(ENOKI_NATIVE_FLAGS ${ENOKI_ARCH_FLAGS})
if (NOT DEFINED ENOKI_ARCH_FLAGS)
set(ENOKI_ARCH_FLAGS -march=armv8-a+simd -mtune=cortex-a53)
endif()
if (NOT ENOKI_NATIVE_FLAGS)
set(ENOKI_NATIVE_FLAGS ${ENOKI_ARCH_FLAGS})
endif()
elseif (CMAKE_CXX_COMPILER MATCHES "/em\\+\\+(-[a-zA-Z0-9.])?$")
# Emscripten
else()
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