https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79885
--- Comment #6 from Jeremy Huddleston Sequoia <jeremyhu at macports dot org> ---
Got farther with the Makefile.in edit and setting of CPP and CXXCPP, but
failing now because --sysroot=... is not getting passed to xg++ during
configure-stage2-gcc:
from gcc/config.log:
configure:6449:
/opt/local/var/macports/build/_Users_jeremy_src_macports_macports-ports_lang_gcc6/libgcc/work/build/./pr
ev-gcc/xg++ ... conftest.cpp >&5
conftest.cpp:22:19: fatal error: stdio.h: No such file or directory
#include <stdio.h>
^
compilation terminated.
