https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90835
--- Comment #7 from Iain Sandoe <iains at gcc dot gnu.org> --- (In reply to John Marshall from comment #6) > > let's not speculate ... could you (and/or Rainer) try this (untested) patch > > and > > see how far it gets you? > > Fails in approximately the same place as without: > > ../../gcc/configure --disable-nls --disable-multilib > --with-sysroot=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk > --enable-languages=c,c++ > Make > ^~~~~~~~~~~~~~~~~~~~~~~~ > > I.e. it got no definition of __AVAILABILITY_INTERNAL__MAC_10_10. OK. So we're stuck with either (hopefully) a fix in the released version or another fix includes. Let's hope for the former - there's no point in committing fixincludes patches for something unreleased, but I suppose someone could cook up/propose the minimum needed. (It seems that the one for 10.13/14 SDKs needs applying anyway.)