2004-01-15 Geoffrey Keating <geoffk@apple.com>

	* Makefile.in (MD5_H): New.
	(fold-const.o): Depend on md5.h.
	(dwarf2out.o): Likewise.
	(cppfiles.o): Likewise.
	* cppfiles.c: Include md5.h.
	(should_stack_file): Check against list read from PCH file.
	(struct pchf_data): New.
	(pchf): New variable.
	(struct pchf_adder_info): New.
	(pchf_adder): New.
	(pchf_save_compare): New.
	(_cpp_save_file_entries): New.
	(_cpp_read_file_entries): New.
	(struct pchf_compare_data): New.
	(pchf_compare): New.
	(check_file_against_entries): New.
	* cpphash.h (_cpp_save_file_entries): Prototype.
	(_cpp_read_file_entries): Prototype.
	* cpppch.c (cpp_write_pch_state): Write the list of headers.
	(cpp_read_state): Read the list of headers.

Index: testsuite/ChangeLog
2004-01-16  Geoffrey Keating  <geoffk@apple.com>

	* gcc.dg/pch/import-1.c: New.
	* gcc.dg/pch/import-1.hs: New.
	* gcc.dg/pch/import-1a.h: New.
	* gcc.dg/pch/import-1b.h: New.
	* gcc.dg/pch/import-1c.h: New.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@76016 138bc75d-0d04-0410-961f-82ee72b054a4