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handle GNUCC_ARCH on non-x86 properly

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This commit is contained in:
Konstantinos Margaritis 2021-07-02 19:10:21 +03:00
parent 1ce5e17ce9
commit 9685095379
1 changed files with 14 additions and 10 deletions
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24
CMakeLists.txt
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@ -182,7 +182,7 @@ else()
string(REGEX REPLACE "-O[^ ]*" "" CMAKE_CXX_FLAGS_${CONFIG} "${CMAKE_CXX_FLAGS_${CONFIG}}")
endforeach ()
if (ARCH_IA32 OR ARCH_X86_64 AND CMAKE_COMPILER_IS_GNUCC)
if (CMAKE_COMPILER_IS_GNUCC)
message(STATUS "gcc version ${CMAKE_C_COMPILER_VERSION}")
# If gcc doesn't recognise the host cpu, then mtune=native becomes
# generic, which isn't very good in some cases. march=native looks at
@ -199,16 +199,20 @@ else()
string(REGEX REPLACE "march=[ \t]*([^ \n]*)[ \n].*" "\\1"
GNUCC_ARCH "${_GCC_OUTPUT}")
# test the parsed flag
set (EXEC_ARGS ${CC_ARG1} -E - -mtune=${GNUCC_ARCH})
execute_process(COMMAND ${CMAKE_C_COMPILER} ${EXEC_ARGS}
OUTPUT_QUIET ERROR_QUIET
INPUT_FILE /dev/null
RESULT_VARIABLE GNUCC_TUNE_TEST)
if (NOT GNUCC_TUNE_TEST EQUAL 0)
message(SEND_ERROR "Something went wrong determining gcc tune: -mtune=${GNUCC_ARCH} not valid")
if (ARCH_IA32 OR ARCH_X86_64)
# test the parsed flag
set (EXEC_ARGS ${CC_ARG1} -E - -mtune=${GNUCC_ARCH})
execute_process(COMMAND ${CMAKE_C_COMPILER} ${EXEC_ARGS}
OUTPUT_QUIET ERROR_QUIET
INPUT_FILE /dev/null
RESULT_VARIABLE GNUCC_TUNE_TEST)
if (NOT GNUCC_TUNE_TEST EQUAL 0)
message(SEND_ERROR "Something went wrong determining gcc tune: -mtune=${GNUCC_ARCH} not valid")
endif()
set(TUNE_FLAG ${GNUCC_ARCH})
else()
set(TUNE_FLAG native)
endif()
set(TUNE_FLAG ${GNUCC_ARCH})
elseif (NOT TUNE_FLAG)
set(TUNE_FLAG native)
endif()