forked from OSchip/llvm-project
75 lines
2.7 KiB
CMake
75 lines
2.7 KiB
CMake
include(CMakeCheckCompilerFlagCommonPatterns)
|
|
|
|
# This function takes an OS and a list of architectures and identifies the
|
|
# subset of the architectures list that the installed toolchain can target.
|
|
function(try_compile_only output)
|
|
set(SIMPLE_C ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/src.c)
|
|
file(WRITE ${SIMPLE_C} "int foo(int x, int y) { return x + y; }\n")
|
|
string(REGEX MATCHALL "<[A-Za-z0-9_]*>" substitutions
|
|
${CMAKE_C_COMPILE_OBJECT})
|
|
string(REPLACE ";" " " extra_flags "${ARGN}")
|
|
|
|
set(test_compile_command "${CMAKE_C_COMPILE_OBJECT}")
|
|
foreach(substitution ${substitutions})
|
|
if(substitution STREQUAL "<CMAKE_C_COMPILER>")
|
|
string(REPLACE "<CMAKE_C_COMPILER>"
|
|
"${CMAKE_C_COMPILER}" test_compile_command ${test_compile_command})
|
|
elseif(substitution STREQUAL "<OBJECT>")
|
|
string(REPLACE "<OBJECT>"
|
|
"${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/test.o"
|
|
test_compile_command ${test_compile_command})
|
|
elseif(substitution STREQUAL "<SOURCE>")
|
|
string(REPLACE "<SOURCE>" "${SIMPLE_C}" test_compile_command
|
|
${test_compile_command})
|
|
elseif(substitution STREQUAL "<FLAGS>")
|
|
string(REPLACE "<FLAGS>" "${CMAKE_C_FLAGS} ${extra_flags}"
|
|
test_compile_command ${test_compile_command})
|
|
else()
|
|
string(REPLACE "${substitution}" "" test_compile_command
|
|
${test_compile_command})
|
|
endif()
|
|
endforeach()
|
|
|
|
string(REPLACE " " ";" test_compile_command "${test_compile_command}")
|
|
|
|
execute_process(
|
|
COMMAND ${test_compile_command}
|
|
RESULT_VARIABLE result
|
|
OUTPUT_VARIABLE TEST_OUTPUT
|
|
ERROR_VARIABLE TEST_ERROR
|
|
)
|
|
|
|
CHECK_COMPILER_FLAG_COMMON_PATTERNS(_CheckCCompilerFlag_COMMON_PATTERNS)
|
|
foreach(var ${_CheckCCompilerFlag_COMMON_PATTERNS})
|
|
if("${var}" STREQUAL "FAIL_REGEX")
|
|
continue()
|
|
endif()
|
|
if("${var}" MATCHES "${_CheckCCompilerFlag_COMMON_PATTERNS}")
|
|
set(ERRORS_FOUND True)
|
|
endif()
|
|
endforeach()
|
|
|
|
if(result EQUAL 0 AND NOT ERRORS_FOUND)
|
|
set(${output} True PARENT_SCOPE)
|
|
else()
|
|
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
|
|
"Testing compiler for supporting " ${ARGN} ":\n"
|
|
"Command: ${test_compile_command}\n"
|
|
"${TEST_OUTPUT}\n${TEST_ERROR}\n${result}\n")
|
|
set(${output} False PARENT_SCOPE)
|
|
endif()
|
|
endfunction()
|
|
|
|
function(builtin_check_c_compiler_flag flag output)
|
|
if(NOT DEFINED ${output})
|
|
message(STATUS "Performing Test ${output}")
|
|
try_compile_only(result ${flag})
|
|
set(${output} ${result} CACHE INTERNAL "Compiler supports ${flag}")
|
|
if(${result})
|
|
message(STATUS "Performing Test ${output} - Success")
|
|
else()
|
|
message(STATUS "Performing Test ${output} - Failed")
|
|
endif()
|
|
endif()
|
|
endfunction()
|