BUG: fix GNU check variable and add new variables used by enable language

Modules/CMakeFortranCompiler.cmake.in

@@ -1,7 +1,7 @@
 SET(CMAKE_Fortran_COMPILER "@CMAKE_Fortran_COMPILER@")
 SET(CMAKE_AR "@CMAKE_AR@")
 SET(CMAKE_RANLIB "@CMAKE_RANLIB@")
-SET(CMAKE_COMPILER_IS_GNUCC @CMAKE_COMPILER_IS_GNUCC@)
+SET(CMAKE_COMPILER_IS_GNUG77 @CMAKE_COMPILER_IS_GNUG77@)
 SET(CMAKE_Fortran_COMPILER_LOADED 1)
 SET(CMAKE_COMPILER_IS_MINGW @CMAKE_COMPILER_IS_MINGW@)
 SET(CMAKE_COMPILER_IS_CYGWIN @CMAKE_COMPILER_IS_CYGWIN@)
@@ -15,3 +15,10 @@ IF(CMAKE_COMPILER_IS_MINGW)
 ENDIF(CMAKE_COMPILER_IS_MINGW)
 SET(CMAKE_COMPILER_IS_GNUG77_RUN 1)
 SET(CMAKE_Fortran_SOURCE_FILE_EXTENSIONS f;F;f77;f90;for;f95)
+SET(CMAKE_Fortran_IGNORE_EXTENSIONS h;H;o;O;obj;OBJ;def;DEF;rc;RC)
+SET(CMAKE_Fortran_LINKER_PREFERENCE Prefered)
+IF(UNIX)
+  SET(CMAKE_Fortran_OUTPUT_EXTENSION .o)
+ELSE(UNIX)
+  SET(CMAKE_Fortran_OUTPUT_EXTENSION .obj)
+ENDIF(UNIX)