+mark_as_advanced(HAVE_F2C_LIB)
+
+#Some old versions of 64 bits systems seem to have a different size between C and Fortran Datatypes
+#Deactivate F2C with these versions, in order to avoid breaking test cases in legacy systems (as Fedora 13)
+set(COMPILER_OK 1)
+if(PROCESSOR_x86_64 AND "${CMAKE_SYSTEM}" MATCHES "Linux" AND ${CMAKE_C_COMPILER_ID} STREQUAL "GNU" AND "4.5" STRGREATER "${COMPILER_C_VERSION_MAJOR_MINOR}" )
+ set(COMPILER_OK 0)
+ message("Your C compiler is a bit old and Fortran support is quite problematic on 64 bit platforms, F2C has been deactivated")
+endif()
+
+set(SMPI_F2C 0)
+if(HAVE_F2C_H AND F2C_EXE AND HAVE_F2C_LIB AND COMPILER_OK)
+ set(SMPI_F2C 1)
+endif()
+
+if(SMPI_F2C)
+ include_directories(${HAVE_F2C_H})
+else()
+ message("-- Fortran 77 support for smpi is disabled.")
+endif()