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Code Issues Releases Wiki Activity

Detect ARM processors when using clang

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This commit is contained in:
Carles Fernandez
2019-11-02 00:12:47 +01:00
parent 681022b9c9
commit d6b4ba4fc3
1 changed files with 73 additions and 57 deletions
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34
cmake/Modules/TestForARM.cmake
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@@ -50,16 +50,22 @@ endif()
if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
execute_process(COMMAND echo "int main(){}"
COMMAND ${CMAKE_CXX_COMPILER} ${CMAKE_CXX_COMPILER_ARG1} -dM ${VERBOSE_BUILDING} -E -
OUTPUT_VARIABLE TEST_FOR_ARM_RESULTS)
OUTPUT_VARIABLE TEST_FOR_ARM_RESULTS
)
string(REGEX MATCH "__arm" ARM_FOUND "${TEST_FOR_ARM_RESULTS}")
if(ARM_FOUND STREQUAL "")
string(REGEX MATCH "__aarch64" ARM_FOUND "${TEST_FOR_ARM_RESULTS}")
endif()
if(ARM_FOUND STREQUAL "")
if(CMAKE_HOST_SYSTEM_PROCESSOR MATCHES "arm")
set(ARM_FOUND ${CMAKE_HOST_SYSTEM_PROCESSOR})
endif()
endif()
if(NOT ARM_FOUND STREQUAL "")
set(IS_ARM TRUE)
message(STATUS "ARM system detected")
message(STATUS "ARM system detected.")
# detect the version
check_arm_version("__ARM_ARCH_2__" ${TEST_FOR_ARM_RESULTS} "armv2" ARM_VERSION)
@@ -88,22 +94,32 @@ if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
check_arm_version("__ARM_ARCH_8A__" ${TEST_FOR_ARM_RESULTS} "armv8-a" ARM_VERSION)
check_arm_version("__ARM_ARCH_8A" ${TEST_FOR_ARM_RESULTS} "armv8-a" ARM_VERSION)
# anything else just define as arm
# anything else just define as unknown
if(ARM_VERSION STREQUAL "")
message(STATUS "Couldn't detect ARM version. Setting to 'arm'")
set(ARM_VERSION "arm")
message(STATUS "Couldn't detect ARM version.")
set(ARM_VERSION "unknown")
else()
message(STATUS "ARM version ${ARM_VERSION} detected")
message(STATUS "ARM version ${ARM_VERSION} detected.")
endif()
else()
message(STATUS "System is not ARM")
message(STATUS "System is not ARM.")
endif()
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
if(CMAKE_HOST_SYSTEM_PROCESSOR MATCHES "arm")
set(IS_ARM TRUE)
set(ARM_VERSION ${CMAKE_HOST_SYSTEM_PROCESSOR})
message(STATUS "ARM version ${ARM_VERSION} detected.")
endif()
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "ARMClang")
set(IS_ARM TRUE)
set(ARM_VERSION "arm")
if(CMAKE_HOST_SYSTEM_PROCESSOR MATCHES "arm")
set(ARM_VERSION ${CMAKE_HOST_SYSTEM_PROCESSOR})
message(STATUS "ARM version ${ARM_VERSION} detected.")
endif()
else()
message(STATUS "Not detecting ARM on non-GNUCXX or non-ARMClang compiler. Defaulting to false")
message(STATUS "If you are compiling for ARM, set IS_ARM=ON manually")
message(STATUS "Not detecting ARM on non-GNUCXX or non-Clang compiler. Defaulting to false.")
message(STATUS "If you are compiling for ARM, set -DIS_ARM=ON manually.")
endif()
set(IS_ARM ${IS_ARM} CACHE BOOL "Compiling for ARM")