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From: Jeff Law <law@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc r12-1415] [PATCH] config: Backport "Rely less on internal symbols" (serial 69) to gettext.m4 Date: Mon, 14 Jun 2021 02:26:22 +0000 (GMT) [thread overview] Message-ID: <20210614022622.12E8D383D02F@sourceware.org> (raw) https://gcc.gnu.org/g:3a01d8eec23091dc24c2fb14a621ea92a262ff50 commit r12-1415-g3a01d8eec23091dc24c2fb14a621ea92a262ff50 Author: Michael Forney <mforney@mforney.org> Date: Sun Jun 13 22:24:06 2021 -0400 [PATCH] config: Backport "Rely less on internal symbols" (serial 69) to gettext.m4 config * gettext.m4 (AM_GNU_GETTEXT): Skip checks for the internal symbols _nl_msg_cat_cntr, _nl_domain_bindings, and _nl_expand_alias, if __GNU_GETTEXT_SUPPORTED_REVISION is defined. Backport of gettext serial 68 patch. Diff: --- config/gettext.m4 | 52 +++++++++++++++++++++++++++++++++++----------------- 1 file changed, 35 insertions(+), 17 deletions(-) diff --git a/config/gettext.m4 b/config/gettext.m4 index 45fa6b4ab76..5b42bb16523 100644 --- a/config/gettext.m4 +++ b/config/gettext.m4 @@ -128,6 +128,13 @@ AC_DEFUN([AM_GNU_GETTEXT], AC_CACHE_CHECK([for GNU gettext in libc], gt_cv_func_gnugettext_libc, [AC_TRY_LINK([#include <libintl.h> +#ifndef __GNU_GETTEXT_SUPPORTED_REVISION +extern int _nl_msg_cat_cntr; +extern int *_nl_domain_bindings; +#define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_domain_bindings) +#else +#define __GNU_GETTEXT_SYMBOL_EXPRESSION 0 +#endif ]ifelse([$2], [need-formatstring-macros], [#ifndef __GNU_GETTEXT_SUPPORTED_REVISION #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1) @@ -135,10 +142,9 @@ AC_DEFUN([AM_GNU_GETTEXT], changequote(,)dnl typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1]; changequote([,])dnl -], [])[extern int _nl_msg_cat_cntr; -extern int *_nl_domain_bindings;], +], []), [bindtextdomain ("", ""); -return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_domain_bindings], +return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", "", 0)], [])[ + __GNU_GETTEXT_SYMBOL_EXPRESSION], gt_cv_func_gnugettext_libc=yes, gt_cv_func_gnugettext_libc=no)]) @@ -160,6 +166,17 @@ return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", LIBS="$LIBS $LIBINTL" dnl Now see whether libintl exists and does not depend on libiconv. AC_TRY_LINK([#include <libintl.h> +#ifndef __GNU_GETTEXT_SUPPORTED_REVISION +extern int _nl_msg_cat_cntr; +extern +#ifdef __cplusplus +"C" +#endif +const char *_nl_expand_alias (); +#define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_expand_alias (0)) +#else +#define __GNU_GETTEXT_SYMBOL_EXPRESSION 0 +#endif ]ifelse([$2], [need-formatstring-macros], [#ifndef __GNU_GETTEXT_SUPPORTED_REVISION #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1) @@ -167,20 +184,26 @@ return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", changequote(,)dnl typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1]; changequote([,])dnl -], [])[extern int _nl_msg_cat_cntr; -extern -#ifdef __cplusplus -"C" -#endif -const char *_nl_expand_alias ();], +], []), [bindtextdomain ("", ""); -return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_expand_alias (0)], +return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", "", 0)], [])[ + __GNU_GETTEXT_SYMBOL_EXPRESSION], gt_cv_func_gnugettext_libintl=yes, gt_cv_func_gnugettext_libintl=no) dnl Now see whether libintl exists and depends on libiconv. if test "$gt_cv_func_gnugettext_libintl" != yes && test -n "$LIBICONV"; then LIBS="$LIBS $LIBICONV" AC_TRY_LINK([#include <libintl.h> +#ifndef __GNU_GETTEXT_SUPPORTED_REVISION +extern int _nl_msg_cat_cntr; +extern +#ifdef __cplusplus +"C" +#endif +const char *_nl_expand_alias (); +#define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_expand_alias (0)) +#else +#define __GNU_GETTEXT_SYMBOL_EXPRESSION 0 +#endif ]ifelse([$2], [need-formatstring-macros], [#ifndef __GNU_GETTEXT_SUPPORTED_REVISION #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1) @@ -188,14 +211,9 @@ return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", changequote(,)dnl typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1]; changequote([,])dnl -], [])[extern int _nl_msg_cat_cntr; -extern -#ifdef __cplusplus -"C" -#endif -const char *_nl_expand_alias ();], +], []), [bindtextdomain ("", ""); -return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_expand_alias (0)], +return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", "", 0)], [])[ + __GNU_GETTEXT_SYMBOL_EXPRESSION], [LIBINTL="$LIBINTL $LIBICONV" LTLIBINTL="$LTLIBINTL $LTLIBICONV" gt_cv_func_gnugettext_libintl=yes
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