open source pkg v1

pkg/OpenFace/cmake/modules/CheckFortranFunctionExists.cmake

@@ -0,0 +1,66 @@
+# 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
+
+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()