https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71767
--- Comment #37 from Jack Howarth <howarth.at.gcc at gmail dot com> --- (In reply to Eric Gallager from comment #33) > I'm not sure if this is due to the patches from this bug report, or if it's > due to some other change made to GCC recently, but my fork of Emacs now > fails to build with LTO due to a bunch of undefined local symbols: This issue exists in stock gcc 6.2.0 on x86_64-apple-darwin15. I can reproduce the issue building emacs 25.1 configured with... ../configure --without-ns --prefix=/Users/howarth/emacs-dist CC=/sw/bin/gcc-fsf-6 CXX=/sw/bin/g++-fsf-6 CPPFLAGS="-I/sw/include" LDFLAGS="-flto -fno-pie -L/sw/lib" CFLAGS="-O0 -g -fno-pie -flto" which produces a build that fails at... CCLD temacs /var/folders/vh/xthx1f251nqfj804049zl1wm0000gn/T//cc5Viitn.s:288358:1: error: assembler local symbol 'L1' not defined ... /var/folders/vh/xthx1f251nqfj804049zl1wm0000gn/T//cc5Viitn.s:288358:1: error: assembler local symbol 'L174' not defined
