Summary of my perl5 (revision 5 version 10 subversion 0) configuration: Platform: osname=linux, osvers=2.6.18-128.el5, archname=x86_64-linux uname='linux abit939.tlviewer.org 2.6.18-128.el5 #1 smp wed jan 21 10:41:14 est 2009 x86_64 x86_64 x86_64 gnulinux ' config_args='-de -A ccflags=-fPIC' hint=recommended, useposix=true, d_sigaction=define useithreads=undef, usemultiplicity=undef useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef use64bitint=define, use64bitall=define, uselongdouble=undef usemymalloc=n, bincompat5005=undef Compiler: cc='cc', ccflags ='-fPIC -fno-strict-aliasing -pipe -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64', optimize='-O2', cppflags='-fPIC -fno-strict-aliasing -pipe -I/usr/local/include' ccversion='', gccversion='4.1.2 20080704 (Red Hat 4.1.2-44)', gccosandvers='' intsize=4, longsize=8, ptrsize=8, doublesize=8, byteorder=12345678 d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16 ivtype='long', ivsize=8, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8 alignbytes=8, prototype=define Linker and Libraries: ld='cc', ldflags =' -L/usr/local/lib' libpth=/usr/local/lib /lib /usr/lib /lib64 /usr/lib64 /usr/local/lib64 libs=-lnsl -ldb -ldl -lm -lcrypt -lutil -lc perllibs=-lnsl -ldl -lm -lcrypt -lutil -lc libc=/lib/libc-2.5.so, so=so, useshrplib=false, libperl=libperl.a gnulibc_version='2.5' Dynamic Linking: dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E' cccdlflags='-fPIC', lddlflags='-shared -O2 -L/usr/local/lib' Characteristics of this binary (from libperl): Compile-time options: PERL_DONT_CREATE_GVSV PERL_MALLOC_WRAP USE_64_BIT_ALL USE_64_BIT_INT USE_LARGE_FILES USE_PERLIO Built under linux Compiled at May 1 2009 15:10:13 @INC: /usr/local/lib/perl5/5.10.0/x86_64-linux /usr/local/lib/perl5/5.10.0 /usr/local/lib/perl5/site_perl/5.10.0/x86_64-linux /usr/local/lib/perl5/site_perl/5.10.0 .