Summary of my perl5 (revision 5 version 12 subversion 3) configuration:

  Platform:
    osname=linux, osvers=2.6.32-71.el6.x86_64, archname=i386-linux-thread-multi
    uname='linux x86-01.phx2.fedoraproject.org 2.6.32-71.el6.x86_64 #1 smp wed sep 1 01:33:01 edt 2010 i686 i686 i386 gnulinux '
    config_args='-des -Doptimize=-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i686 -mtune=atom -fasynchronous-unwind-tables -Dccdlflags=-Wl,--enable-new-dtags -DDEBUGGING=-g -Dversion=5.12.3 -Dmyhostname=localhost -Dperladmin=root@localhost -Dcc=gcc -Dcf_by=Red Hat, Inc. -Dprefix=/usr -Dvendorprefix=/usr -Dsiteprefix=/usr/local -Dsitelib=/usr/local/share/perl5 -Dsitearch=/usr/local/lib/perl5 -Dprivlib=/usr/share/perl5 -Dvendorlib=/usr/share/perl5 -Darchlib=/usr/lib/perl5 -Dvendorarch=/usr/lib/perl5 -Darchname=i386-linux-thread-multi -Duseshrplib -Dusethreads -Duseithreads -Dusedtrace=/usr/bin/dtrace -Duselargefiles -Dd_semctl_semun -Di_db -Ui_ndbm -Di_gdbm -Di_shadow -Di_syslog -Dman3ext=3pm -Duseperlio -Dinstallusrbinperl=n -Ubincompat5005 -Uversiononly -Dpager=/usr/bin/less -isr -Dd_gethostent_r_proto -Ud_endhostent_r_proto -Ud_sethostent_r_proto -Ud_endprotoent_r_proto -Ud_setprotoent_r_proto -Ud_endservent_r_proto -Ud_setservent_r_proto -Dscriptdir=/usr/bin -Dotherlibdirs=/usr/local/lib/perl5/site_perl/5.10.0/i386-linux-thread-multi:/usr/local/lib/perl5/site_perl/5.10.0:/usr/lib/perl5/vendor_perl/5.10.0/i386-linux-thread-multi:/usr/lib/perl5/vendor_perl:/usr/lib/perl5/site_perl'
    hint=recommended, useposix=true, d_sigaction=define
    useithreads=define, usemultiplicity=define
    useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
    use64bitint=undef, use64bitall=undef, uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='gcc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
    optimize='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i686 -mtune=atom -fasynchronous-unwind-tables',
    cppflags='-D_REENTRANT -D_GNU_SOURCE -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include'
    ccversion='', gccversion='4.5.1 20100924 (Red Hat 4.5.1-4)', gccosandvers=''
    intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
    alignbytes=4, prototype=define
  Linker and Libraries:
    ld='gcc', ldflags =' -fstack-protector -L/usr/local/lib'
    libpth=/usr/local/lib /lib /usr/lib
    libs=-lresolv -lnsl -lgdbm -ldb -ldl -lm -lcrypt -lutil -lpthread -lc -lgdbm_compat
    perllibs=-lresolv -lnsl -ldl -lm -lcrypt -lutil -lpthread -lc
    libc=/lib/libc-2.12.90.so, so=so, useshrplib=true, libperl=libperl.so
    gnulibc_version='2.12.90'
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,--enable-new-dtags -Wl,-rpath,/usr/lib/perl5/CORE'
    cccdlflags='-fPIC', lddlflags='-shared -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i686 -mtune=atom -fasynchronous-unwind-tables -L/usr/local/lib'


Characteristics of this binary (from libperl):
  Compile-time options: MULTIPLICITY PERL_DONT_CREATE_GVSV
                        PERL_IMPLICIT_CONTEXT PERL_MALLOC_WRAP USE_ITHREADS
                        USE_LARGE_FILES USE_PERLIO USE_PERL_ATOF
                        USE_REENTRANT_API
  Built under linux
  Compiled at Jan 24 2011 10:31:17
  @INC:
    /usr/local/lib/perl5
    /usr/local/share/perl5
    /usr/lib/perl5
    /usr/share/perl5
    /usr/lib/perl5
    /usr/share/perl5
    /usr/local/lib/perl5/site_perl/5.10.0/i386-linux-thread-multi
    /usr/local/lib/perl5/site_perl/5.10.0
    /usr/lib/perl5/vendor_perl/5.10.0/i386-linux-thread-multi
    /usr/lib/perl5/vendor_perl
    /usr/lib/perl5/site_perl
    .
installarchlib='/usr/lib/perl5';
installbin='/usr/bin';
installhtml1dir='';
installhtml3dir='';
installman1dir='/usr/share/man/man1';
installman3dir='/usr/share/man/man3';
installprefix='/usr';
installprefixexp='/usr';
installprivlib='/usr/share/perl5';
installscript='/usr/bin';
installsitearch='/usr/local/lib/perl5';
installsitebin='/usr/local/bin';
installsitehtml1dir='';
installsitehtml3dir='';
installsitelib='/usr/local/share/perl5';
installsiteman1dir='/usr/local/share/man/man1';
installsiteman3dir='/usr/local/share/man/man3';
installsitescript='/usr/local/bin';
installstyle='lib/perl5';
installusrbinperl='undef';
installvendorarch='/usr/lib/perl5';
installvendorbin='/usr/bin';
installvendorhtml1dir='';
installvendorhtml3dir='';
installvendorlib='/usr/share/perl5';
installvendorman1dir='/usr/share/man/man1';
installvendorman3dir='/usr/share/man/man3';
installvendorscript='/usr/bin';