| #.rst: |
| # CheckFortranCompilerFlag |
| # ------------------------ |
| # |
| # Check whether the Fortran compiler supports a given flag. |
| # |
| # CHECK_Fortran_COMPILER_FLAG(<flag> <var>) |
| # |
| # :: |
| # |
| # <flag> - the compiler flag |
| # <var> - variable to store the result |
| # Will be created as an internal cache variable. |
| # |
| # This internally calls the check_fortran_source_compiles macro and |
| # sets CMAKE_REQUIRED_FLAGS to <flag>. See help for |
| # CheckFortranSourceCompiles for a listing of variables that can |
| # otherwise modify the build. The result only tells that the compiler |
| # does not give an error message when it encounters the flag. If the |
| # flag has any effect or even a specific one is beyond the scope of |
| # this module. |
| |
| #============================================================================= |
| # Copyright 2015 Nicolas Bock <nicolasbock@gmail.com> |
| # Copyright 2006-2011 Kitware, Inc. |
| # Copyright 2006 Alexander Neundorf <neundorf@kde.org> |
| # Copyright 2011 Matthias Kretz <kretz@kde.org> |
| # |
| # Distributed under the OSI-approved BSD License (the "License"); |
| # see accompanying file Copyright.txt for details. |
| # |
| # This software is distributed WITHOUT ANY WARRANTY; without even the |
| # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| # See the License for more information. |
| #============================================================================= |
| # (To distribute this file outside of CMake, substitute the full |
| # License text for the above reference.) |
| |
| include(CheckFortranSourceCompiles) |
| include(CMakeCheckCompilerFlagCommonPatterns) |
| |
| macro (CHECK_Fortran_COMPILER_FLAG _FLAG _RESULT) |
| set(SAFE_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}") |
| set(CMAKE_REQUIRED_FLAGS "${_FLAG}") |
| |
| # Normalize locale during test compilation. |
| set(_CheckFortranCompilerFlag_LOCALE_VARS LC_ALL LC_MESSAGES LANG) |
| foreach(v ${_CheckFortranCompilerFlag_LOCALE_VARS}) |
| set(_CheckFortranCompilerFlag_SAVED_${v} "$ENV{${v}}") |
| set(ENV{${v}} C) |
| endforeach() |
| CHECK_COMPILER_FLAG_COMMON_PATTERNS(_CheckFortranCompilerFlag_COMMON_PATTERNS) |
| CHECK_Fortran_SOURCE_COMPILES(" program test\n stop\n end program" ${_RESULT} |
| # Some compilers do not fail with a bad flag |
| FAIL_REGEX "command line option .* is valid for .* but not for Fortran" # GNU |
| ${_CheckFortranCompilerFlag_COMMON_PATTERNS} |
| ) |
| foreach(v ${_CheckFortranCompilerFlag_LOCALE_VARS}) |
| set(ENV{${v}} ${_CheckFortranCompilerFlag_SAVED_${v}}) |
| unset(_CheckFortranCompilerFlag_SAVED_${v}) |
| endforeach() |
| unset(_CheckFortranCompilerFlag_LOCALE_VARS) |
| unset(_CheckFortranCompilerFlag_COMMON_PATTERNS) |
| |
| set (CMAKE_REQUIRED_FLAGS "${SAFE_CMAKE_REQUIRED_FLAGS}") |
| endmacro () |