Trunk version of r27792 (cmake filename changed between trunk and

v1.6).  This is likely a useless commit, because Windows support will
likely be deleted in the trunk eventually (and is almost certainly
currently broken), but I figured I'd do my due diligence in
back-porting from v1.6 on the small, small chance that someone
resurrects the cmake/Windows support on the trunk.

This commit was SVN r27793.

The following SVN revision numbers were found above:
  r27792 --> open-mpi/ompi@12af886582

contrib/platform/win32/CMakeModules/setup_fortran.cmake

@@ -24,11 +24,28 @@ SET(FORTRAN ${FORTRAN_NAME} CACHE INTERNAL "Name of the fortran compiler.")
 
 IF(OMPI_WANT_FORTRAN_BINDINGS AND NOT FORTRAN_SETUP_DONE)
 
-  SET(OMPI_MPI_INTEGER_KIND 0 CACHE INTERNAL "MPI_INTEGER_KIND")
-  SET(OMPI_MPI_ADDRESS_KIND 0 CACHE INTERNAL "MPI_ADDRESS_KIND")
-  SET(OMPI_MPI_OFFSET_KIND 0 CACHE INTERNAL "MPI_OFFSET_KIND")
-  SET(OMPI_FORTRAN_STATUS_SIZE 0 CACHE INTERNAL "MPI_STATUS_SIZE")
+  # Get the size of a C size_t; that's the size of the Fortran
+  # MPI_OFFSET_KIND
+  MESSAGE( STATUS "Checking size of C size_t...")
+  FILE (WRITE "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/check_sizeof_sizet.c"
+        "#include <stddef.h>
+       int main() {return sizeof(size_t);}
+      ")
+  TRY_RUN(SIZEOF_C_SIZE_T COMPILE_RESULT "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/"
+        "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/check_sizeof_sizet.c")
+  SET(OMPI_MPI_OFFSET_KIND ${SIZEOF_C_SIZE_T} CACHE INTERNAL "MPI_OFFSET_KIND")
 
+  # MPI_INTEGER_KIND is always 4
+  SET(OMPI_MPI_INTEGER_KIND 4 CACHE INTERNAL "MPI_INTEGER_KIND") 
+
+  # MPI_ADDRESS_KIND is the size of a C (void*), which is built-in to
+  # Cmake.
+  SET(OMPI_MPI_ADDRESS_KIND ${CMAKE_SIZEOF_VOID_P} CACHE INTERNAL "MPI_ADDRESS_KIND") 
+
+  # Finally, set the number of integers in MPI_STATUS_SIZE (it's 4
+  # integers plus 1 size_t).
+  MATH( EXPR __ompi_f_status "(4+(${SIZEOF_C_SIZE_T}/4))")
+  SET(OMPI_FORTRAN_STATUS_SIZE ${__ompi_f_status} CACHE INTERNAL "MPI_STATUS_SIZE") 
 
   # Default compiler settings.
   IF(${FORTRAN} STREQUAL "ifort.exe")