[host] cmake: use -march=nehalem by default

Nehalem is the minimum requirement for the host application as it makes
use of SSE4.1 instructions, as such we should default to compling with
it instead of `-march=native` so that when the binary is distributed it
will operate on foreign systems.

Fixed #416
This commit is contained in:
Geoffrey McRae 2021-01-28 08:07:42 +11:00
parent 7e15ec5e66
commit 6b5842d2ff

View file

@ -6,12 +6,17 @@ set(CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake/")
include(CheckCCompilerFlag)
include(FeatureSummary)
option(OPTIMIZE_FOR_NATIVE "Build with -march=native" ON)
option(OPTIMIZE_FOR_NATIVE "Build with -march=native" OFF)
if(OPTIMIZE_FOR_NATIVE)
CHECK_C_COMPILER_FLAG("-march=native" COMPILER_SUPPORTS_MARCH_NATIVE)
if(COMPILER_SUPPORTS_MARCH_NATIVE)
add_compile_options("-march=native")
endif()
else()
CHECK_C_COMPILER_FLAG("-march=nehalem" COMPILER_SUPPORTS_MARCH_NEHALEM)
if(COMPILER_SUPPORTS_MARCH_NEHALEM)
add_compile_options("-march=nehalem")
endif()
endif()
option(ENABLE_BACKTRACE "Enable backtrace support on crash" ON)