Using Tru64 cc, compile problems tzcode2007.tar.gz

can compile Makefile using gcc just fine. When compile using Dec Tru64 cc get the following error message. example cc: Error: zic.c, line 2647: In the definition of the function "mkdirs", the promoted type of agrname is incompatible with the type of the corresponding parameter in a prior declaration. char * const argname ------^ " any thoughts..?? Thanks - Don -