https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91130
--- Comment #26 from Richard Earnshaw <rearnsha at gcc dot gnu.org> --- On the basis that COLLECT_GCC_OPTIONS are the options to add if reinvoking gcc, then that environment variable is really a set of driver options. As such, I suspect the right fix for this is to add CL_DRIVER to the lang_mask value passed into get_options_from_collect_gcc_options. As such, the patch for this is something like the attached.
