build: lower gettext requirements.

Bison was uselessly requiring the formatstring macros from
gettext, which resulted in mo files not being installed on systems
that perfectly supported Bison mo files.  Lower the requirement.
http://lists.gnu.org/archive/html/bug-bison/2009-08/msg00006.html

	* configure.ac: Require need-ngettext instead of
	need-formatstring-macros.
	Reported by Martin Jabocs.
	Suggested by Bruno Haible.
	* INSTALL: Restructure.
	(Internationalization): New.
(cherry picked from commit b9e42bb439643b6b193ba44696c370bbb35d2ec0)

4 files changed, 44 insertions, 12 deletions

diff --git a/ChangeLog b/ChangeLog
index 14d2d08f..a3691fba 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,19 @@
+2009-08-17  Akim Demaille  <demaille@gostai.com>
+
+	build: lower gettext requirements.
+
+	Bison was uselessly requiring the formatstring macros from
+	gettext, which resulted in mo files not being installed on systems
+	that perfectly supported Bison mo files.  Lower the requirement.
+	http://lists.gnu.org/archive/html/bug-bison/2009-08/msg00006.html
+
+        * configure.ac: Require need-ngettext instead of
+        need-formatstring-macros.
+        Reported by Martin Jabocs.
+        Suggested by Bruno Haible.
+        * INSTALL: Restructure.
+        (Internationalization): New.
+
 2009-08-14  Joel E. Denny  <jdenny@clemson.edu>
 
 	maint: fix use of copyright year intervals.
diff --git a/README b/README
index 34a524db..2bf62bf2 100644
--- a/README
+++ b/README
@@ -1,27 +1,42 @@
 This package contains the GNU Bison parser generator.
 
-See the file INSTALL for generic compilation and installation instructions.
+* Installation
+** Build
+See the file INSTALL for generic compilation and installation
+instructions.
 
+Bison requires GNU m4 1.4.6 or later.  See:
+
+      ftp://ftp.gnu.org/gnu/m4/m4-1.4.6.tar.gz
+
+** Internationalization
+Bison supports two catalogues: one for Bison itself (i.e., for the
+maintainer-side parser generation), and one for the generated parsers
+(i.e., for the user-side parser execution).  The requirements between
+both differ: bison needs ngettext, the generated parsers do not.  To
+simplify the build system, neither are installed if ngettext is not
+supported, even if generated parsers could have been localized.  See
+http://lists.gnu.org/archive/html/bug-bison/2009-08/msg00006.html for
+more details.
+
+* Questions
 See the section FAQ in the documentation (doc/bison.info) for
 frequently asked questions.  The documentation is also available in
 PDF and HTML, provided you have a recent version of Texinfo installed:
 run "make pdf" or "make html".
 
-Bison requires GNU m4 1.4.6 or later.  See:
-
-ftp://ftp.gnu.org/gnu/m4/m4-1.4.6.tar.gz
-
-Bison can work with pre-1.4.6 distributions of GNU m4 if they are
-sufficiently patched, but if you encounter a bug with an older
-distribution and report a bug we will probably suggest that you
-upgrade to 1.4.6 as the first step in trying to fix it.
+If you have questions about using Bison and the documentation does
+not answer them, please send mail to <help-bison@gnu.org>.
 
+* Bug reports
 Please send bug reports to <bug-bison@gnu.org>.  Please include the
 version number from `bison --version', and a complete, self-contained
 test case in each bug report.
 
-If you have questions about using Bison and the documentation does
-not answer them, please send mail to <help-bison@gnu.org>.
+
+Local Variables:
+mode: outline
+End:
 
 -----
 
diff --git a/THANKS b/THANKS
index bd2faa19..5c4c1367 100644
--- a/THANKS
+++ b/THANKS
@@ -51,6 +51,7 @@ Keith Browne              kbrowne@legato.com
 Laurent Mascherpa         laurent.mascherpa@epita.fr
 Magnus Fromreide          magfr@lysator.liu.se
 Marc Autret               autret_m@epita.fr
+Martin Jacobs             martin.jacobs@arcor.de
 Martin Mokrejs            mmokrejs@natur.cuni.cz
 Martin Nylin              martin.nylin@linuxmail.org
 Matt Kraai                kraai@alumni.cmu.edu
diff --git a/configure.ac b/configure.ac
index fa2a8e29..868259d1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -116,7 +116,7 @@ BISON_PREREQ_TIMEVAR
 
 # Gettext.
 # We've never tested with gettext versions before 0.15, so play it safe.
-AM_GNU_GETTEXT([external], [need-formatstring-macros])
+AM_GNU_GETTEXT([external], [need-ngettext])
 AM_GNU_GETTEXT_VERSION([0.15])
 BISON_I18N