Hi, could you please assist us why we have problems below when trying to install Perl 5.005_03 on HPN4000 machine running HPUX ver 11.0 operating system. ====================================================== Do you wish to attempt to use the malloc that comes with perl5? [y] Removing unneeded -lmalloc from library list libs = -lnsl_s -lndbm -ldld -lm -lc -lndir -lcrypt Your system wants malloc to return 'void *', it would seem. Your system uses void free(), it would seem. Checking out function prototypes... Your C compiler doesn't seem to understand function prototypes. Configure: FATAL ERROR: This version of perl5 can only be compiled by a compiler that understands function prototypes. Unfortunately, your C compiler cc -D_HPUX_SOURCE doesn't seem to understand them. Sorry about that. If GNU cc is available for your system, perhaps you could try that instead. Eventually, we hope to support building Perl with pre-ANSI compilers. If you would like to help in that effort, please contact <perlbug@perl.org>. Aborting Configure now. _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com