configure.in (enable_c_mbchar): New configure option.

configure.in (enable_c_mbchar): New configure option.

Mon Jul 20 16:16:38 1998  Dave Brolley  <brolley@cygnus.com>
	* configure.in (enable_c_mbchar): New configure option.
	(extra_cpp_objs): Always available now.
	* cexp.y (mbchar.h): #include it.
	(yylex): Handle Multibyte characters in character literals.
	* cccp.c (mbchar.h): #include it.
	(main): Set character set based on LANG environment variable.
	(rescan): Handle multibyte characters in comments.
	(skip_if_group): See above.
	(validate_else): See above.
	(skip_to_end_of_comment): See above.
	(macarg1): See above.
	(discard_comments): See above.
	(rescan): Handle multibyte characters in string and character literals.
	(collect_expansion): See above.
	(skip_quoted_string): See above.
	(macroexpand): See above.
	(macarg1): See above.
	(discard_comments): See above.
	(change_newlines): See above.
	* c-lex.c (mbchar.h): #include it.
	(GET_ENVIRONMENT): New macro.
	(init_lex): Set character set based on LANG environment variable.
	(yylex): Handle multibyte characters in character literals.
	(yylex): Handle multibyte characters in string literals.
	* Makefile.in (mbchar.o): New target.
	(cccp$(exeext)): @extra_cpp_objs@ is always available.
	(cppmain$(exeext)): @extra_cpp_objs@ is always available.
	* mbchar.[ch]: New files for multibyte character handling.

From-SVN: r21303