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gnss-sdr/cmake/Modules/TestForARM.cmake
2015-03-21 00:23:16 +10:00

84 lines
3.9 KiB
CMake

##############################################################################
# check if the compiler defines the architecture as ARM and set the
# version, if found.
#
# - Anthony Arnold
##############################################################################
if (__TEST_FOR_ARM_INCLUDED)
return ()
endif()
set(__TEST_FOR_ARM_INCLUDED TRUE)
# Function checks if the input string defines ARM version and sets the
# output variable if found.
function(check_arm_version ppdef input_string version output_var)
string(REGEX MATCH "${ppdef}" _VERSION_MATCH "${input_string}")
if (NOT _VERSION_MATCH STREQUAL "")
set(${output_var} "${version}" PARENT_SCOPE)
endif(NOT _VERSION_MATCH STREQUAL "")
endfunction()
message(STATUS "Checking for ARM")
set (IS_ARM NO)
set (ARM_VERSION "")
if (CMAKE_COMPILER_IS_GNUCXX)
execute_process(COMMAND echo "int main(){}"
COMMAND ${CMAKE_CXX_COMPILER} ${CMAKE_CXX_COMPILER_ARG1} -dM -E -
OUTPUT_VARIABLE TEST_FOR_ARM_RESULTS)
string(REGEX MATCH "__arm" ARM_FOUND "${TEST_FOR_ARM_RESULTS}")
if (NOT ARM_FOUND STREQUAL "")
set(IS_ARM YES)
message(STATUS "ARM system detected")
# detect the version
check_arm_version("__ARM_ARCH_2__" ${TEST_FOR_ARM_RESULTS} "armv2" ARM_VERSION)
check_arm_version("__ARM_ARCH_2A__" ${TEST_FOR_ARM_RESULTS} "armv2a" ARM_VERSION)
check_arm_version("__ARM_ARCH_3__" ${TEST_FOR_ARM_RESULTS} "armv3" ARM_VERSION)
check_arm_version("__ARM_ARCH_3M__" ${TEST_FOR_ARM_RESULTS} "armv3m" ARM_VERSION)
check_arm_version("__ARM_ARCH_4__" ${TEST_FOR_ARM_RESULTS} "armv4" ARM_VERSION)
check_arm_version("__ARM_ARCH_4T__" ${TEST_FOR_ARM_RESULTS} "armv4t" ARM_VERSION)
check_arm_version("__ARM_ARCH_5__" ${TEST_FOR_ARM_RESULTS} "armv5" ARM_VERSION)
check_arm_version("__ARM_ARCH_5T__" ${TEST_FOR_ARM_RESULTS} "armv5t" ARM_VERSION)
check_arm_version("__ARM_ARCH_5E__" ${TEST_FOR_ARM_RESULTS} "armv5e" ARM_VERSION)
check_arm_version("__ARM_ARCH_5TE__" ${TEST_FOR_ARM_RESULTS} "armv5te" ARM_VERSION)
check_arm_version("__ARM_ARCH_6__" ${TEST_FOR_ARM_RESULTS} "armv6" ARM_VERSION)
check_arm_version("__ARM_ARCH_6J__" ${TEST_FOR_ARM_RESULTS} "armv6j" ARM_VERSION)
check_arm_version("__ARM_ARCH_6K__" ${TEST_FOR_ARM_RESULTS} "armv6k" ARM_VERSION)
check_arm_version("__ARM_ARCH_6T2__" ${TEST_FOR_ARM_RESULTS} "armv6t2" ARM_VERSION)
check_arm_version("__ARM_ARCH_6Z__" ${TEST_FOR_ARM_RESULTS} "armv6z" ARM_VERSION)
check_arm_version("__ARM_ARCH_6ZK__" ${TEST_FOR_ARM_RESULTS} "armv6zk" ARM_VERSION)
check_arm_version("__ARM_ARCH_6M__" ${TEST_FOR_ARM_RESULTS} "armv6-m" ARM_VERSION)
check_arm_version("__ARM_ARCH_7__" ${TEST_FOR_ARM_RESULTS} "armv7" ARM_VERSION)
check_arm_version("__ARM_ARCH_7A__" ${TEST_FOR_ARM_RESULTS} "armv7-a" ARM_VERSION)
check_arm_version("__ARM_ARCH_7M__" ${TEST_FOR_ARM_RESULTS} "armv7-m" ARM_VERSION)
check_arm_version("__ARM_ARCH_7R__" ${TEST_FOR_ARM_RESULTS} "armv7-r" ARM_VERSION)
check_arm_version("__ARM_ARCH_7EM_" ${TEST_FOR_ARM_RESULTS} "armv7e-m" ARM_VERSION)
check_arm_version("__ARM_ARCH_7VE__" ${TEST_FOR_ARM_RESULTS} "armv7ve" ARM_VERSION)
check_arm_version("__ARM_ARCH_8A__" ${TEST_FOR_ARM_RESULTS} "armv8-a" ARM_VERSION)
# anything else just define as arm
if (ARM_VERSION STREQUAL "")
message(STATUS "Couldn't detect ARM version. Setting to 'arm'")
set(ARM_VERSION "arm")
else (ARM_VERSION STREQUAL "")
message(STATUS "ARM version ${ARM_VERSION} detected")
endif (ARM_VERSION STREQUAL "")
else (NOT ARM_FOUND STREQUAL "")
message(STATUS "System is not ARM")
endif(NOT ARM_FOUND STREQUAL "")
else (CMAKE_COMPILE_IS_GNUCXX)
# TODO: Other compilers
message(STATUS "Not detecting ARM on non-GNUCXX compiler. Defaulting to false")
message(STATUS "If you are compiling for ARM, set IS_ARM=ON manually")
endif(CMAKE_COMPILER_IS_GNUCXX)
set(IS_ARM ${IS_ARM} CACHE BOOL "Compiling for ARM")
set(ARM_VERSION ${ARM_VERSION} CACHE STRING "ARM version")