| # Distributed under the OSI-approved BSD 3-Clause License. See accompanying |
| # file Copyright.txt or https://cmake.org/licensing for details. |
| |
| #.rst: |
| # CheckFortranFunctionExists |
| # -------------------------- |
| # |
| # macro which checks if the Fortran function exists |
| # |
| # CHECK_FORTRAN_FUNCTION_EXISTS(FUNCTION VARIABLE) |
| # |
| # :: |
| # |
| # FUNCTION - the name of the Fortran function |
| # VARIABLE - variable to store the result |
| # Will be created as an internal cache variable. |
| # |
| # |
| # |
| # The following variables may be set before calling this macro to modify |
| # the way the check is run: |
| # |
| # :: |
| # |
| # CMAKE_REQUIRED_LIBRARIES = list of libraries to link |
| |
| include_guard(GLOBAL) |
| |
| macro(CHECK_FORTRAN_FUNCTION_EXISTS FUNCTION VARIABLE) |
| if(NOT DEFINED ${VARIABLE}) |
| message(STATUS "Looking for Fortran ${FUNCTION}") |
| if(CMAKE_REQUIRED_LIBRARIES) |
| set(CHECK_FUNCTION_EXISTS_ADD_LIBRARIES |
| LINK_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES}) |
| else() |
| set(CHECK_FUNCTION_EXISTS_ADD_LIBRARIES) |
| endif() |
| file(WRITE |
| ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testFortranCompiler.f |
| " |
| program TESTFortran |
| external ${FUNCTION} |
| call ${FUNCTION}() |
| end program TESTFortran |
| " |
| ) |
| try_compile(${VARIABLE} |
| ${CMAKE_BINARY_DIR} |
| ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testFortranCompiler.f |
| ${CHECK_FUNCTION_EXISTS_ADD_LIBRARIES} |
| OUTPUT_VARIABLE OUTPUT |
| ) |
| # message(STATUS "${OUTPUT}") |
| if(${VARIABLE}) |
| set(${VARIABLE} 1 CACHE INTERNAL "Have Fortran function ${FUNCTION}") |
| message(STATUS "Looking for Fortran ${FUNCTION} - found") |
| file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log |
| "Determining if the Fortran ${FUNCTION} exists passed with the following output:\n" |
| "${OUTPUT}\n\n") |
| else() |
| message(STATUS "Looking for Fortran ${FUNCTION} - not found") |
| set(${VARIABLE} "" CACHE INTERNAL "Have Fortran function ${FUNCTION}") |
| file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log |
| "Determining if the Fortran ${FUNCTION} exists failed with the following output:\n" |
| "${OUTPUT}\n\n") |
| endif() |
| endif() |
| endmacro() |