perl5.12 via MacPorts:

$ perl -MExtUtils::Embed -e ldopts
-L/opt/local/lib -arch x86_64 -fstack-protector -L/opt/local/lib/perl5/5.12.3/darwin-multi-2level/CORE -lperl -ldl -lm -lutil -lc

$ perl -V
Summary of my perl5 (revision 5 version 12 subversion 3) configuration:

Platform:
osname=darwin, osvers=10.8.0, archname=darwin-multi-2level
uname='darwin beta.macosforge.org 10.8.0 darwin kernel version 10.8.0: tue jun 7 16:33:36 pdt 2011; root:xnu-1504.15.3~1release_i386 i386 '
config_args='-D inc_version_list=5.12.2/darwin-multi-2level 5.12.2 5.12.1/darwin-multi-2level 5.12.1 5.12.0/darwin-multi-2level 5.12.0 -des -Dprefix=/opt/local -Dscriptdir=/opt/local/bin -Dcppflags=-I/opt/local/include -Dccflags=-pipe -O2 -arch x86_64 -Dldflags=-L/opt/local/lib -arch x86_64 -Dvendorprefix=/opt/local -Dusemultiplicity=y -D cc=/usr/bin/gcc-4.2 -D ld=/usr/bin/gcc-4.2 -D man1ext=1pm -D man3ext=3pm -D man1dir=/opt/local/share/man/man1p -D man3dir=/opt/local/share/man/man3p -D siteman1dir=/opt/local/share/man/man1 -D siteman3dir=/opt/local/share/man/man3 -D vendorman1dir=/opt/local/share/man/man1 -D vendorman3dir=/opt/local/share/man/man3 -D pager=/usr/bin/less -sR'
hint=recommended, useposix=true, d_sigaction=define
useithreads=undef, usemultiplicity=define
useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
use64bitint=define, use64bitall=define, uselongdouble=undef
usemymalloc=n, bincompat5005=undef
Compiler:
cc='/usr/bin/gcc-4.2', ccflags ='-pipe -O2 -arch x86_64 -fno-common -DPERL_DARWIN -I/opt/local/include -no-cpp-precomp -fno-strict-aliasing -fstack-protector -I/opt/local/include',
optimize='-O3',
cppflags='-I/opt/local/include -no-cpp-precomp -pipe -O2 -arch x86_64 -fno-common -DPERL_DARWIN -I/opt/local/include -no-cpp-precomp -fno-strict-aliasing -fstack-protector -I/opt/local/include'
ccversion='', gccversion='4.2.1 (Apple Inc. build 5666) (dot 3)', 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='env MACOSX_DEPLOYMENT_TARGET=10.6 /usr/bin/gcc-4.2', ldflags ='-L/opt/local/lib -arch x86_64 -fstack-protector'
libpth=/opt/local/lib /usr/lib
libs=-lgdbm -ldbm -ldl -lm -lutil -lc
perllibs=-ldl -lm -lutil -lc
libc=, so=dylib, useshrplib=false, libperl=libperl.a
gnulibc_version=''
Dynamic Linking:
dlsrc=dl_dlopen.xs, dlext=bundle, d_dlsymun=undef, ccdlflags=' '
cccdlflags=' ', lddlflags='-L/opt/local/lib -arch x86_64 -bundle -undefined dynamic_lookup -fstack-protector'


Characteristics of this binary (from libperl):
Compile-time options: MULTIPLICITY PERL_DONT_CREATE_GVSV
PERL_IMPLICIT_CONTEXT PERL_MALLOC_WRAP USE_64_BIT_ALL
USE_64_BIT_INT USE_LARGE_FILES USE_PERLIO
USE_PERL_ATOF
Built under darwin
Compiled at Aug 29 2011 07:18:38
@INC:
/opt/local/lib/perl5/site_perl/5.12.3/darwin-multi-2level
/opt/local/lib/perl5/site_perl/5.12.3
/opt/local/lib/perl5/vendor_perl/5.12.3/darwin-multi-2level
/opt/local/lib/perl5/vendor_perl/5.12.3
/opt/local/lib/perl5/5.12.3/darwin-multi-2level
/opt/local/lib/perl5/5.12.3
/opt/local/lib/perl5/site_perl
/opt/local/lib/perl5/vendor_perl
.