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intl: Unbreak intl build with bison 3 when no regeneration is needed [PR92008] 

As Iain reported, my change broke the case when one has bison >= 3,
but make decides there is no reason to regenerate plural.c, unfortunately
that seems to be a scenario I haven't tested.  The problem is that
the pregenerated plural.c has been generated with bison 1.35, but when
config.h says HAVE_BISON3, the code assumes it is the bison3 variant.
What used to work fine is when one has bison >= 3 and plural.c has been
regenerated (e.g. do touch intl/plural.y and it will work), or when
one doesn't have any bison (then nothing is regenerated, but HAVE_BISON3
isn't defined either), or when one has bison < 3 and doesn't need to
regenerate, or when one has bison < 3 and it is regenerated.

The following patch fixes this, by killing the HAVE_BISON3 macro from
config.h, and instead remembering the fact whether plural.c has been created
with bison < 3 or bison >= 3 in a separate new plural-config.h header.
The way this works:
- user doesn't have bison
- user has bison >= 3, but intl/{plural-config.h,plural.c} aren't older than intl/plural.y
- user has bison < 3, but intl/{plural-config.h,plural.c} aren't older than intl/plural.y
	pregenerated !USE_BISON3 plural.c and plural-config.h from source
	dir is used, nothing in the objdir
- user has bison >= 3 and intl/plural.y is newer
	Makefile generates plural.c and USE_BISON3 plural-config.h in the
	objdir, which is then used in preference to srcdir copies
- user has bison < 3 and intl/plural.y is newer
	Makefile generates plural.c and !USE_BISON3 plural-config.h in the
	objdir, which is then used in preference to srcdir copies
I have tested all these cases and make all-yes worked in all the cases.
If one uses the unsupported ./configure where srcdir == objdir, I guess
(though haven't tested) that it should still work, just it would be nice
if such people didn't try to check in the plural{.c,-config.h} they have
regenerated.
What doesn't work, but didn't work before either (just tested gcc-9 branch
too) is when one doesn't have bison and plural.y is newer than plural.c.
Don't do that ;)

2020-04-16  Jakub Jelinek  <jakub@redhat.com>

	PR bootstrap/92008
intl/
	* configure.ac: Remove HAVE_BISON3 AC_DEFINE.
	* Makefile.in (HEADERS): Add plural-config.h.
	(.y.c): Also create plural-config.h.
	(dcigettext.o loadmsgcat.o plural.o plural-exp.o): Also depend
	on plural-config.h.
	(plural-config.h): Depend on plural.c.
	* plural-exp.h: Include plural-config.h.  Use USE_BISON3 instead
	of HAVE_BISON3.
	* plural.y: Use USE_BISON3 instead of HAVE_BISON3.
	* configure: Regenerated.
	* plural.c: Regenerated.
	* config.h.in: Regenerated.
	* plural-config.h: Generated.
contrib/
	* gcc_update: Add intl/plural.y dependency for intl/plural-config.h.
This commit is contained in:
Jakub Jelinek 2020-04-16 11:55:00 +02:00
parent bd87b1fddb
commit 437eea66a4
11 changed files with 39 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
contrib/ChangeLog
View File

@ -1,3 +1,8 @@
2020-04-16 Jakub Jelinek <jakub@redhat.com>
PR bootstrap/92008
* gcc_update: Add intl/plural.y dependency for intl/plural-config.h.
2020-04-03 Martin Liska <mliska@suse.cz>
* gcc-git-customization.sh: Search for the pattern

1
contrib/gcc_update
View File

@ -72,6 +72,7 @@ fixincludes/configure: fixincludes/configure.ac fixincludes/aclocal.m4
fixincludes/config.h.in: fixincludes/configure.ac fixincludes/aclocal.m4
# intl library
intl/plural.c: intl/plural.y
intl/plural-config.h: intl/plural.y
intl/configure: intl/configure.ac intl/aclocal.m4
intl/config.h.in: intl/configure.ac intl/aclocal.m4
# Now, proceed to gcc automatically generated files

15
intl/ChangeLog
View File

@ -1,5 +1,20 @@
2020-04-16 Jakub Jelinek <jakub@redhat.com>
PR bootstrap/92008
* configure.ac: Remove HAVE_BISON3 AC_DEFINE.
* Makefile.in (HEADERS): Add plural-config.h.
(.y.c): Also create plural-config.h.
(dcigettext.o loadmsgcat.o plural.o plural-exp.o): Also depend
on plural-config.h.
(plural-config.h): Depend on plural.c.
* plural-exp.h: Include plural-config.h. Use USE_BISON3 instead
of HAVE_BISON3.
* plural.y: Use USE_BISON3 instead of HAVE_BISON3.
* configure: Regenerated.
* plural.c: Regenerated.
* config.h.in: Regenerated.
* plural-config.h: Generated.
PR bootstrap/92008
* configure.ac: Add check for bison >= 3, AC_DEFINE HAVE_BISON3
and AC_SUBST BISON3_YES and BISON3_NO.

7
intl/Makefile.in
View File

@ -57,6 +57,7 @@ HEADERS = \
gettextP.h \
hash-string.h \
loadinfo.h \
plural-config.h \
plural-exp.h \
eval-plural.h \
localcharset.h \
@ -133,10 +134,12 @@ libintl.h: $(srcdir)/libgnuintl.h
$(COMPILE) $<
.y.c:
@BISON3_YES@ echo '#define USE_BISON3' > $(patsubst %.c,%-config.h,$@)
@BISON3_YES@ sed 's,%pure_parser,,;s,^/\* BISON3 \(.*\) \*/$$,\1,' $< > $@.y
@BISON3_YES@ $(YACC) $(YFLAGS) --output $@.c $@.y
@BISON3_YES@ sed 's/\.c\.y"/.y"/' $@.c > $@
@BISON3_YES@ rm -f $@.c $@.y $@.h
@BISON3_NO@ echo '/* #define USE_BISON3 */' > $(patsubst %.c,%-config.h,$@)
@BISON3_NO@ $(YACC) $(YFLAGS) --output $@ $<
rm -f $*.h
@ -165,7 +168,7 @@ dngettext.o finddomain.o gettext.o intl-compat.o loadmsgcat.o \
localealias.o ngettext.o textdomain.o: gettextP.h gmo.h loadinfo.h
dcigettext.o loadmsgcat.o: hash-string.h
explodename.o l10nflist.o: loadinfo.h
dcigettext.o loadmsgcat.o plural.o plural-exp.o: plural-exp.h
dcigettext.o loadmsgcat.o plural.o plural-exp.o: plural-exp.h plural-config.h
dcigettext.o: eval-plural.h
localcharset.o: localcharset.h
localealias.o localcharset.o relocatable.o: relocatable.h
@ -242,6 +245,8 @@ $(srcdir)/aclocal.m4: @MAINT@ $(aclocal_deps)
config.h: stamp-h1
test -f config.h || (rm -f stamp-h1 && $(MAKE) stamp-h1)
plural-config.h: plural.c
stamp-h1: $(srcdir)/config.h.in config.status
-rm -f stamp-h1
$(SHELL) ./config.status config.h

3
intl/config.h.in
View File

@ -28,9 +28,6 @@
/* Define to 1 if you have the <argz.h> header file. */
#undef HAVE_ARGZ_H
/* Define if bison 3 or later is used. */
#undef HAVE_BISON3
/* Define if the GNU dcgettext() function is already present or preinstalled.
*/
#undef HAVE_DCGETTEXT

3
intl/configure vendored
View File

@ -6808,9 +6808,6 @@ $as_echo_n "checking bison 3 or later... " >&6; }
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_prog_version" >&5
$as_echo "$ac_prog_version" >&6; }
if test $ac_bison3 = yes; then
$as_echo "#define HAVE_BISON3 1" >>confdefs.h
BISON3_YES=
BISON3_NO='#'
fi

1
intl/configure.ac
View File

@ -62,7 +62,6 @@ changequote([,])dnl
esac
AC_MSG_RESULT([$ac_prog_version])
if test $ac_bison3 = yes; then
AC_DEFINE(HAVE_BISON3, 1, [Define if bison 3 or later is used.])
BISON3_YES=
BISON3_NO='#'
fi

1
intl/plural-config.h Normal file
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@ -0,0 +1 @@
/* #define USE_BISON3 */

4
intl/plural-exp.h
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@ -20,6 +20,8 @@
#ifndef _PLURAL_EXP_H
#define _PLURAL_EXP_H
#include <plural-config.h>
#ifndef PARAMS
# if __STDC__ || defined __GNUC__ || defined __SUNPRO_C || defined __cplusplus || __PROTOTYPES
# define PARAMS(args) args
@ -111,7 +113,7 @@ struct parse_args
extern void FREE_EXPRESSION PARAMS ((struct expression *exp))
internal_function;
#ifdef HAVE_BISON3
#ifdef USE_BISON3
extern int PLURAL_PARSE PARAMS ((struct parse_args *arg));
#else
extern int PLURAL_PARSE PARAMS ((void *arg));

8
intl/plural.c
View File

@ -59,7 +59,7 @@
# define __gettextparse PLURAL_PARSE
#endif
#ifndef HAVE_BISON3
#ifndef USE_BISON3
#define YYLEX_PARAM &((struct parse_args *) arg)->cp
#define YYPARSE_PARAM arg
#endif
@ -89,7 +89,7 @@ static inline struct expression *new_exp_3 PARAMS ((enum operator op,
struct expression *bexp,
struct expression *tbranch,
struct expression *fbranch));
#ifdef HAVE_BISON3
#ifdef USE_BISON3
static int yylex PARAMS ((YYSTYPE *lval, struct parse_args *arg));
static void yyerror PARAMS ((struct parse_args *arg, const char *str));
#else
@ -1372,7 +1372,7 @@ FREE_EXPRESSION (exp)
}
#ifdef HAVE_BISON3
#ifdef USE_BISON3
static int
yylex (lval, arg)
YYSTYPE *lval;
@ -1526,7 +1526,7 @@ yylex (lval, pexp)
}
#ifdef HAVE_BISON3
#ifdef USE_BISON3
static void
yyerror (arg, str)
struct parse_args *arg;

8
intl/plural.y
View File

@ -40,7 +40,7 @@
# define __gettextparse PLURAL_PARSE
#endif
#ifndef HAVE_BISON3
#ifndef USE_BISON3
#define YYLEX_PARAM &((struct parse_args *) arg)->cp
#define YYPARSE_PARAM arg
#endif
@ -71,7 +71,7 @@ static inline struct expression *new_exp_3 PARAMS ((enum operator op,
struct expression *bexp,
struct expression *tbranch,
struct expression *fbranch));
#ifdef HAVE_BISON3
#ifdef USE_BISON3
static int yylex PARAMS ((YYSTYPE *lval, struct parse_args *arg));
static void yyerror PARAMS ((struct parse_args *arg, const char *str));
#else
@ -266,7 +266,7 @@ FREE_EXPRESSION (exp)
}
#ifdef HAVE_BISON3
#ifdef USE_BISON3
static int
yylex (lval, arg)
YYSTYPE *lval;
@ -420,7 +420,7 @@ yylex (lval, pexp)
}
#ifdef HAVE_BISON3
#ifdef USE_BISON3
static void
yyerror (arg, str)
struct parse_args *arg;