Dear Sir, I am building perl5.6 version in my unix "SunOS 5.7 Generic_106541-11 sun4u sparc SUNW,Ultra-5_10" and it fails in linking process as shown below: rm -f libperl.a /usr/local/bin/ar rcu libperl.a perl.o malloc.o gv.o toke.o perly.o op.o regcomp.o dump.o util.o mg.o hv.o av.o run.o pp_hot.o sv.o pp.o scope.o pp_ctl.o pp_sys.o doop.o doio.o regexec.o utf8.o taint.o deb.o universal.o xsutils.o globals.o perlio.o perlapi.o cc -L/nsm/pine/lib -L/usr/local/lib -L/nsm/pine/thirdparty/CC5.0/SUNWspro/SC5.0/lib -o miniperl \ miniperlmain.o opmini.o libperl.a -lsocket -lnsl -ldl -lm -lc -lcrypt -lsec /lib/libcrypt.a ld: warning: file libperl.a ignored: unable to locate archive symbol table Undefined first referenced symbol in file PL_in_eval opmini.o PL_Xpv opmini.o PL_savestack opmini.o PL_debstash opmini.o PL_markstack_max opmini.o PL_sub_generation opmini.o Perl_newAV opmini.o Perl_av_fill opmini.o PL_perl_destruct_level miniperlmain.o . . . . ld: fatal: Symbol referencing errors. No output written to miniperl *** Error code 1 make: Fatal error: Command failed for target `miniperl' Looks like the problem probably is in libperl.a. But don't know why. By the way, I am using default installation. Thanks a lot for the possible helps from you! JackThread Next