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#
#//===----------------------------------------------------------------------===//
#//
#// The LLVM Compiler Infrastructure
#//
#// This file is dual licensed under the MIT and the University of Illinois Open
#// Source Licenses. See LICENSE.txt for details.
#//
#//===----------------------------------------------------------------------===//
#
# Checking a fortran compiler flag
# There is no real trivial way to do this in CMake, so we implement it here
# this will have ${boolean} = TRUE if the flag succeeds, otherwise false.
function(libomp_check_fortran_flag flag boolean)
if(NOT DEFINED "${boolean}")
set(retval TRUE)
set(fortran_source
" program hello
print *, \"Hello World!\"
end program hello")
set(failed_regexes "[Ee]rror;[Uu]nknown;[Ss]kipping")
if(CMAKE_VERSION VERSION_GREATER 3.1 OR CMAKE_VERSION VERSION_EQUAL 3.1)
include(CheckFortranSourceCompiles)
check_fortran_source_compiles("${fortran_source}" ${boolean} FAIL_REGEX "${failed_regexes}")
set(${boolean} ${${boolean}} PARENT_SCOPE)
return()
else()
# Our manual check for cmake versions that don't have CheckFortranSourceCompiles
set(base_dir ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/fortran_flag_check)
file(MAKE_DIRECTORY ${base_dir})
file(WRITE ${base_dir}/fortran_source.f "${fortran_source}")
message(STATUS "Performing Test ${boolean}")
execute_process(
COMMAND ${CMAKE_Fortran_COMPILER} "${flag}" ${base_dir}/fortran_source.f
WORKING_DIRECTORY ${base_dir}
RESULT_VARIABLE exit_code
OUTPUT_VARIABLE OUTPUT
ERROR_VARIABLE OUTPUT
)
if(${exit_code} EQUAL 0)
foreach(regex IN LISTS failed_regexes)
if("${OUTPUT}" MATCHES ${regex})
set(retval FALSE)
endif()
endforeach()
else()
set(retval FALSE)
endif()
if(${retval})
set(${boolean} 1 CACHE INTERNAL "Test ${boolean}")
message(STATUS "Performing Test ${boolean} - Success")
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
"Performing Fortran Compiler Flag test ${boolean} succeeded with the following output:\n"
"${OUTPUT}\n"
"Source file was:\n${fortran_source}\n")
else()
set(${boolean} "" CACHE INTERNAL "Test ${boolean}")
message(STATUS "Performing Test ${boolean} - Failed")
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
"Performing Fortran Compiler Flag test ${boolean} failed with the following output:\n"
"${OUTPUT}\n"
"Source file was:\n${fortran_source}\n")
endif()
endif()
set(${boolean} ${retval} PARENT_SCOPE)
endif()
endfunction()
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