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Proposal to make march=native somewhat optional. MI_BUILD_NATIVE off by default

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David Carlier 2021-02-11 22:18:19 +00:00
parent 331491e1e8
commit b368f05a42
1 changed files with 2 additions and 1 deletions
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3
CMakeLists.txt
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@ -23,6 +23,7 @@ option(MI_DEBUG_TSAN "Build with thread sanitizer (needs clang)" OFF)
option(MI_DEBUG_UBSAN "Build with undefined-behavior sanitizer (needs clang++)" OFF)
option(MI_CHECK_FULL "Use full internal invariant checking in DEBUG mode (deprecated, use MI_DEBUG_FULL instead)" OFF)
option(MI_INSTALL_TOPLEVEL "Install directly into $CMAKE_INSTALL_PREFIX instead of PREFIX/lib/mimalloc-version" OFF)
option(MI_BUILD_NATIVE "Build with -march=native flag" OFF)
include("cmake/mimalloc-config-version.cmake")
@ -191,7 +192,7 @@ if (MSVC AND MSVC_VERSION GREATER_EQUAL 1914)
endif()
# Architecture flags
if(${CMAKE_HOST_SYSTEM_PROCESSOR} MATCHES "arm" AND NOT APPLE)
if(MI_BUILD_NATIVE AND ${CMAKE_HOST_SYSTEM_PROCESSOR} MATCHES "arm" AND NOT APPLE)
check_cxx_compiler_flag(-march=native CXX_SUPPORTS_MARCH_NATIVE)
if (CXX_SUPPORTS_MARCH_NATIVE)
list(APPEND mi_cflags -march=native)