PayFlow Pro on OS X

Following the instructions on www.php.net/manual/en/ref.pfpro.php: " Copy the header file pfpro.h to /usr/local/include and the library file libpfpro.so to /usr/local/lib. AND These functions are only available if PHP has been compiled with the --with-pfpro[=DIR] option. " So I: # ./configure --with-pfpro=/usr/local If barfs: checking for Verisign Payflow Pro support... yes checking for pfproInit in -lpfpro... no checking for PNInit in -lpfpro... no configure: error: The pfpro extension requires version 2 or 3 of the SDK I'm using the FreeBSD SDK. The # perl Makefile.PL Warning: -L./lib changed to -L/Users/sams/freebsd/perl/./lib Warning: -L. changed to -L/Users/sam/freebsd/perl/. Note (probably harmless): No library found for -lpfpro Note (probably harmless): No library found for -lMSVCRT Writing Makefile for PFProAPI make and then finally it all goes very badly at: [ns:/freebsd/perl] root# make test PERL_DL_NONLAZY=1 LD_LIBRARY_PATH= /usr/bin/perl -Iblib/arch -Iblib/lib -I/System/Library/Perl/darwin -I/System/Library/Perl test.pl 1..2 dyld: /usr/bin/perl Undefined symbols: blah...blah Endlessly searching google turns up something about OS X doesn't do XSUBS or dynamic library something or other. Has anyone survived this? Any tips? Thanks, Sam