LHAPDF with Madgraph5.13 on Mac 10.9

Hello,
I am currently running into problems with running LHAPDF through madgraph on my Macbook pro (OSX 10.9). Following the README.LHAPDF, I have compiled LHAPDF with homebrew, moved libLHAPDF.a to my /lib directory and moved the PDFs (downloaded from http://lhapdf.hepforge.org/pdfsets) to a directory /lib/PDFsets. I then change the my run_card.dat according to the README.

Upon running Madgraph I run into a wall of error-text during compilation saying:

gfortran -O -w -ffixed-line-length-132 -o ../bin/internal/combine_events combine_events.o rw_events.o ranmar.o kin_functions.o open_file.o rw_routines.o alfas_functions.o setrun.o -L../lib/ -lmodel -lpdf -lLHAPDF -lstdc++
Undefined symbols for architecture x86_64:
       "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::find(char const*, unsigned long, unsigned long) const", referenced from:
           _initpdfsetm_ in libLHAPDF.a(libLHAPDFGlue_la-LHAGlue.o)
           _initpdfsetbynamem_ in libLHAPDF.a(libLHAPDFGlue_la-LHAGlue.o)
           _pdfset_ in libLHAPDF.a(libLHAPDFGlue_la-LHAGlue.o)
           LHAPDF::getPDFIndex() in libLHAPDF.a(libLHAPDFGlue_la-LHAGlue.o)
           LHAPDF::PDF::_setname() const in libLHAPDF.a(libLHAPDFGlue_la-LHAGlue.o)
           LHAPDF::PDF::memberID() const in libLHAPDF.a(libLHAPDFGlue_la-LHAGlue.o)
           LHAPDF::mkPDF(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in libLHAPDF.a(Factories.o)

and a whole lot more libLHAPDF.a issues that I don't want to pollute this message with. Does anybody have any experience with this?

Thanks,
Dusty
           ...