PR libstdc++/25524
* cppdefault.h (struct default_include): Add multilib flag.
* cppdefault.c (cpp_include_defaults): Set it.
* c.opt (-imultilib): New option.
* c-opts.c (imultilib): New.
(c_common_handle_option): Handle -imultilib.
(c_common_post_options): Likewise.
* c-incpath.c (add_standard_paths, register_include_chains):
Likewise.
* c-incpath.h (register_include_chains): Add extra parameter.
* gcc.c (do_spec_1): Generate -imultilib option.
(The Specs Language): Update %I description.
(process_command): Update copyright notice.
* doc/cppopts.texi (-imultilib): Document.
* doc/invoke.texi (-imultilib): Include in option summary.
(%I): Update specs documentation.
libstdc++-v3:
* include/Makefile.am: Install host-specific headers in multilib
subdirectory.
* include/Makefile.in: Regenerate.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@110037 138bc75d-0d04-0410-961f-82ee72b054a4
13 files changed: