http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50342
Jack Howarth <howarth at nitro dot med.uc.edu> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |howarth at nitro dot | |med.uc.edu --- Comment #1 from Jack Howarth <howarth at nitro dot med.uc.edu> 2011-09-09 14:04:06 UTC --- Apple's macports developers had similar comments in their recommendations for porting to Lion... http://lists.macosforge.org/pipermail/macports-dev/2011-July/015263.html 5) Building with a compiler that doesn't support newer __builtins If your port uses MacPorts compilers rather than the default compiler, you may run into trouble with string functions. You'll see errors at link time about undefined __builtin_* functions. If this happens, you may want to compile with -D_FORTIFY_SOURCE=0 to tell the headers to use unfortified versions which do not use compiler builtins.