Summary of my perl5 (revision 5 version 10 subversion 0) configuration:
  Platform:
    osname=darwin, osvers=9.1.0, archname=darwin-multi-2level
    uname='darwin syeeda.local 9.1.0 darwin kernel version 9.1.0: wed oct 31 17:46:22 pdt 2007; root:xnu-1228.0.2~1release_i386 i386 '
    config_args='-Uusethreads -Dusemultiplicity -de -s'
    hint=recommended, useposix=true, d_sigaction=define
    useithreads=undef, usemultiplicity=define
    useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
    use64bitint=undef, use64bitall=undef, uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='cc', ccflags ='-fno-common -DPERL_DARWIN -no-cpp-precomp -fno-strict-aliasing -pipe -I/usr/local/include',
    optimize='-O3',
    cppflags='-no-cpp-precomp -fno-common -DPERL_DARWIN -no-cpp-precomp -fno-strict-aliasing -pipe -I/usr/local/include'
    ccversion='', gccversion='4.0.1 (Apple Inc. build 5465)', gccosandvers=''
    intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
    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='env MACOSX_DEPLOYMENT_TARGET=10.3 cc', ldflags =' -L/usr/local/lib'
    libpth=/usr/local/lib /usr/lib
    libs=-ldbm -ldl -lm -lutil -lc
    perllibs=-ldl -lm -lutil -lc
    libc=/usr/lib/libc.dylib, so=dylib, useshrplib=false, libperl=libperl.a
    gnulibc_version=''
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=bundle, d_dlsymun=undef, ccdlflags=' '
    cccdlflags=' ', lddlflags=' -bundle -undefined dynamic_lookup -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_LARGE_FILES USE_PERLIO
  Built under darwin
  Compiled at Jan 29 2008 05:47:00
  %ENV:
    PERL5LIB="/usr/local/svk-1.06/perl/darwin-thread-multi-2level/"
    PERL5_CPANPLUS_CONFIG="/Users/nothingmuch/.cpanplus/config"
    PERL_MM_USE_DEFAULT="1"
  @INC:
    /usr/local/svk-1.06/perl/darwin-thread-multi-2level/
    /usr/local/lib/perl5/5.10.0/darwin-multi-2level
    /usr/local/lib/perl5/5.10.0
    /usr/local/lib/perl5/site_perl/5.10.0/darwin-multi-2level
    /usr/local/lib/perl5/site_perl/5.10.0
    /usr/local/lib/perl5/site_perl/5.8.8
    /usr/local/lib/perl5/site_perl/5.8.6
    /usr/local/lib/perl5/site_perl
    .