2005-05-18 Geoffrey Keating <geoffk@apple.com>

	* dummy-checksum.c: New.
	* genchecksum.c: New.
	* c.opt (print_pch_checksum): New flag.
	* c-pch.c (struct c_pch_validity): Make much shorter.
	(no_checksum): New.
	(host_machine): Remove.
	(target_machine): Remove.
	(get_ident): Change PCH version number.
	(pch_init): When -fverbose-asm, print out the compiler fingerprint.
	Don't put triplets or version string in PCH validity data.
	Do put the compiler checksum in the validity data.
	(c_common_valid_pch): Don't check triplets or version string.  Do
	check checksum.
	(c_common_print_pch_checksum): New.
	* c-opts.c (c_common_handle_option): Add OPT_print_pch_checksum.
	Print fingerprint with -v.
	* c-common.h (c_common_print_pch_checksum): New.
	(executable_checksum): New.
	* Makefile.in (STAGEMOVESTUFF): Add cc1*-dummy, *-checksum.c.
	(cc1-dummy): New rule.
	(cc1-checksum.c): New rule.
	(cc1-checksum.o): New rule.
	(cc1): Add checksum support.
	(build/genchecksum): New.
	(build/genchecksum.o): New.
	(dummy-checksum.o): New.
	(genobjnames): Add genchecksum.o.
	(mostlyclean): Remove *-checksum.c.
	(gnucompare): Add libgcc to list of directories checked.
	Make comparison problems in libgcc/ and with checksum files only
	be warnings.
	* doc/invoke.texi (Precompiled Headers): Remove caution.
	Document that it must be the exact same binary.  Add a few
	known-safe flags to the list.

In cp/:
2005-05-18  Geoffrey Keating  <geoffk@apple.com>

	* Make-lang.in (cc1plus-dummy): New.
	(cc1plus-checksum.c): New.
	(cc1plus-checksum.o): New.
	(cc1plus): Add cc1plus-checksum.o.

In objc/:
2005-05-18  Geoffrey Keating  <geoffk@apple.com>

	* Make-lang.in (cc1obj-dummy): New.
	(cc1obj-checksum.c): New.
	(cc1obj-checksum.o): New.
	(cc1obj): Add cc1obj-checksum.o.

In objcp/:
2005-05-18  Geoffrey Keating  <geoffk@apple.com>

	* Make-lang.in (cc1objplus-dummy): New.
	(cc1objplus-checksum.c): New.
	(cc1objplus-checksum.o): New.
	(cc1objplus): Add cc1objplus-checksum.o.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@99928 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 4 insertions, 0 deletions

diff --git a/gcc/c-common.h b/gcc/c-common.h
index e4c899dbc8e..962f157539e 100644
--- a/gcc/c-common.h
+++ b/gcc/c-common.h
@@ -859,6 +859,10 @@ extern void c_common_read_pch (cpp_reader *pfile, const char *name, int fd,
 extern void c_common_write_pch (void);
 extern void c_common_no_more_pch (void);
 extern void c_common_pch_pragma (cpp_reader *pfile);
+extern void c_common_print_pch_checksum (FILE *f);
+
+/* In *-checksum.c */
+extern const unsigned char executable_checksum[16];
 
 extern void builtin_define_with_value (const char *, const char *, int);
 extern void c_stddef_cpp_builtins (void);