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[all] cmake: fix OptimizeForNative

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1. Correctly detect ON state so that host is not built as -march=native by
   default.
2. Merge OFF and GENERIC options as we need at least -march=nehalem to build
   properly.
This commit is contained in:
Quantum 2021-07-24 23:42:30 -04:00 committed by Geoffrey McRae
parent 2c745db544
commit f4daa9f527
1 changed files with 3 additions and 4 deletions
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7
cmake/OptimizeForNative.cmake
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@ -1,14 +1,14 @@
set(OPTIMIZE_FOR_NATIVE AUTO CACHE STRING "Build with -march=native")
set_property(CACHE OPTIMIZE_FOR_NATIVE PROPERTY STRINGS AUTO ON OFF GENERIC)
set_property(CACHE OPTIMIZE_FOR_NATIVE PROPERTY STRINGS AUTO ON OFF)
set(OPTIMIZE_FOR_NATIVE_ARCH "none")
if(OPTIMIZE_FOR_NATIVE OR (OPTIMIZE_FOR_NATIVE STREQUAL "AUTO" AND OPTIMIZE_FOR_NATIVE_DEFAULT))
if(OPTIMIZE_FOR_NATIVE STREQUAL "ON" OR (OPTIMIZE_FOR_NATIVE STREQUAL "AUTO" AND OPTIMIZE_FOR_NATIVE_DEFAULT))
CHECK_C_COMPILER_FLAG("-march=native" COMPILER_SUPPORTS_MARCH_NATIVE)
if(COMPILER_SUPPORTS_MARCH_NATIVE)
set(OPTIMIZE_FOR_NATIVE_ARCH "native")
set(OPTIMIZE_FOR_NATIVE_ON ON)
endif()
elseif(OPTIMIZE_FOR_NATIVE STREQUAL "AUTO" OR OPTIMIZE_FOR_NATIVE STREQUAL "GENERIC")
elseif(OPTIMIZE_FOR_NATIVE STREQUAL "AUTO" OR OPTIMIZE_FOR_NATIVE STREQUAL "OFF")
CHECK_C_COMPILER_FLAG("-march=x86-64-v2" COMPILER_SUPPORTS_MARCH_X86_64_V2)
if(COMPILER_SUPPORTS_MARCH_X86_64_V2)
set(OPTIMIZE_FOR_NATIVE_ARCH "x86-64-v2")
@ -18,7 +18,6 @@ elseif(OPTIMIZE_FOR_NATIVE STREQUAL "AUTO" OR OPTIMIZE_FOR_NATIVE STREQUAL "GENE
set(OPTIMIZE_FOR_NATIVE_ARCH "nehalem")
endif()
endif()
elseif(NOT OPTIMIZE_FOR_NATIVE)
else()
set(OPTIMIZE_FOR_NATIVE_ARCH "${OPTIMIZE_FOR_NATIVE}")
set(OPTIMIZE_FOR_NATIVE_ON ON)