http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54806
Jack Howarth <howarth at nitro dot med.uc.edu> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |howarth at nitro dot | |med.uc.edu --- Comment #6 from Jack Howarth <howarth at nitro dot med.uc.edu> 2012-10-05 14:33:13 UTC --- MacPorts has broken their gcc47 package by adding the patch... https://trac.macports.org/browser/trunk/dports/lang/gcc47/files/no-runtime-stubs.patch which prevents FSF gcc 4.7.2 from linking in all of the additional libgcc symbols from libgcc_ext which is where the ___emutls_v.* symbols reside.