CMake/Modules/CheckFortranFunctionExists.cmake
Alex Neundorf 35c48e1270 Check*.cmake: Expand imported targets in CMAKE_REQUIRED_LIBRARIES
Add the function cmake_expand_imported_targets() to expand imported
targets in a list of libraries into their on-disk file names for a
particular configuration.  Adapt the implementation from KDE's
HANDLE_IMPORTED_TARGETS_IN_CMAKE_REQUIRED_LIBRARIES which has been in
use for over 2 years.  Call the function from all the Check*.cmake
macros to handle imported targets named in CMAKE_REQUIRED_LIBRARIES.

Alex
2012-02-21 15:38:15 -05:00

70 lines
3.0 KiB
CMake

# - Check if the Fortran function exists.
# CHECK_FORTRAN_FUNCTION_EXISTS(FUNCTION VARIABLE)
# - macro which checks if the Fortran function exists
# FUNCTION - the name of the Fortran function
# VARIABLE - variable to store the result
#
# 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
#=============================================================================
# Copyright 2007-2009 Kitware, Inc.
#
# 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("${CMAKE_CURRENT_LIST_DIR}/CMakeExpandImportedTargets.cmake")
macro(CHECK_FORTRAN_FUNCTION_EXISTS FUNCTION VARIABLE)
if(NOT DEFINED ${VARIABLE})
message(STATUS "Looking for Fortran ${FUNCTION}")
if(CMAKE_REQUIRED_LIBRARIES)
# this one translates potentially used imported library targets to their files on disk
cmake_expand_imported_targets(_ADJUSTED_CMAKE_REQUIRED_LIBRARIES LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} CONFIGURATION "${CMAKE_TRY_COMPILE_CONFIGURATION}")
set(CHECK_FUNCTION_EXISTS_ADD_LIBRARIES
"-DLINK_LIBRARIES:STRING=${_ADJUSTED_CMAKE_REQUIRED_LIBRARIES}")
else(CMAKE_REQUIRED_LIBRARIES)
set(CHECK_FUNCTION_EXISTS_ADD_LIBRARIES)
endif(CMAKE_REQUIRED_LIBRARIES)
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
CMAKE_FLAGS "${CHECK_FUNCTION_EXISTS_ADD_LIBRARIES}"
OUTPUT_VARIABLE OUTPUT
)
# message(STATUS "${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(${VARIABLE})
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(${VARIABLE})
endif(NOT DEFINED ${VARIABLE})
endmacro(CHECK_FORTRAN_FUNCTION_EXISTS)