1 files changed, 69 insertions, 0 deletions
diff --git a/Modules/CheckFortranFunctionExists.cmake b/Modules/CheckFortranFunctionExists.cmake
new file mode 100644
index 000000000..abec9f738
--- /dev/null
+++ b/Modules/CheckFortranFunctionExists.cmake
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+# - 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)