The error is that "implicit int" is no longer allowed in C++.

Assuming you don't want to fix up the source, but just want to get rid
of the diagnostics, here is a technique to suppress the warning messages :

        1) Get the compiler to tell you what the error numbers are when 
                diagnostics are displayed using 
                -Wf,--display_error_number

                        CC -c -Wf,--display_error_number whatever.C

        2) Modify the build with switches to suppress that diagnostic.                          
-Wf,--diag_suppress -Wf,838

                        CC -c -Wf,--diag_suppress -Wf,838 -c whatever.C

e.g. 
CC -c -Wf,--display_error_number w.C
"w.C", line 1: warning #838-D: omission of explicit type is nonstandard ("int"
assumed)
CC -c -Wf,--diag_suppress -Wf,838 -c w.C