http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54642
--- Comment #6 from Jack Howarth <howarth at nitro dot med.uc.edu> 2012-09-21 14:00:03 UTC --- The recompilation of lto-symtab.o during 'make install', but not the -Werror related build failure, can be reproduced on x86_64-apple-darwin12 with... % setenv CC clang % setenv CXX clang++ % ../gcc-4.8-20120920/configure --prefix=/Users/howarth/dist --enable-languages=c,c++,lto --with-gmp=/sw --with-libiconv-prefix=/sw --with-isl=/sw --with-cloog=/sw --with-mpc=/sw --with-system-zlib --enable-checking=yes --x-includes=/usr/X11R6/include --x-libraries=/usr/X11R6/lib --disable-bootstrap % make % make install where lto-symtab.o is recompiled starting with the r191466 commit. I assume that nothing should be recompiled during 'make install' since that appears to use the system compiler set with the CC/CXX environmentals and not the newly built compiler.
