Hi Tim, Thanks for checking this. I am new on this and I did not know about the mailling list, I will post my problem there. I checked the Makefile.PL and the optios bellow are not there cc1: Invalid option `-Wdisabled-optimization' cc1: Invalid option `-Wno-unused-parameter' The output of the perl -V is: >perl -V Summary of my perl5 (revision 5 version 8 subversion 7) configuration: Platform: osname=solaris, osvers=2.8, archname=sun4-solaris uname='sunos solaris 5.8 generic_108528-11 sun4u sparc sunw,ultra-5_10 ' config_args='-Dcc=gcc -B/usr/ccs/bin/' hint=recommended, useposix=true, d_sigaction=define usethreads=undef use5005threads=undef useithreads=undef usemultiplicity=undef useperlio=define d_sfio=undef uselargefiles=define usesocks=undef use64bitint=undef use64bitall=undef uselongdouble=undef usemymalloc=n, bincompat5005=undef Compiler: cc='gcc -B/usr/ccs/bin/', ccflags ='-fno-strict-aliasing -pipe -I/usr/local/include -D_LARGEFIL +E_SOURCE -D_FILE_OFFSET_BITS=64', optimize='-O', cppflags='-fno-strict-aliasing -pipe -I/usr/local/include' ccversion='', gccversion='3.3.2', gccosandvers='solaris2.8' intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=4321 d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16 ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8 alignbytes=8, prototype=define Linker and Libraries: ld='gcc -B/usr/ccs/bin/', ldflags =' -L/usr/local/lib ' libpth=/usr/local/lib /usr/lib /usr/ccs/lib libs=-lsocket -lnsl -ldl -lm -lc perllibs=-lsocket -lnsl -ldl -lm -lc libc=/lib/libc.so, so=so, useshrplib=false, libperl=libperl.a gnulibc_version='' Dynamic Linking: dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags=' ' cccdlflags='-fPIC', lddlflags='-G -L/usr/local/lib' Characteristics of this binary (from libperl): Compile-time options: USE_LARGE_FILES Built under solaris Compiled at Dec 2 2005 01:34:16 @INC: /usr/local/lib/perl5/5.8.7/sun4-solaris /usr/local/lib/perl5/5.8.7 /usr/local/lib/perl5/site_perl/5.8.7/sun4-solaris /usr/local/lib/perl5/site_perl/5.8.7 /usr/local/lib/perl5/site_perl . Thanks again. Rui