gcc/ChangeLog:
* config.gcc: Build and add objects for Cygwin and MinGW. Add Cygwin
and MinGW options to the target.
tm_file="${tm_file} mingw/mingw-stdint.h"
tmake_file="${tmake_file} aarch64/t-aarch64"
target_gtfiles="$target_gtfiles \$(srcdir)/config/mingw/winnt.cc"
+ extra_options="${extra_options} mingw/cygming.opt mingw/mingw.opt"
+ extra_objs="${extra_objs} winnt.o"
+ c_target_objs="${c_target_objs} msformat-c.o"
+ d_target_objs="${d_target_objs} winnt-d.o"
+ tmake_file="${tmake_file} mingw/t-cygming"
case ${enable_threads} in
"" | yes | win32)
thread_file='win32'