From: Gary V. Vaughan <gary@gnu.org>
Date: Fri, 6 Feb 2004 13:58:06 +0000 (+0000)
Subject: * m4/libtool.m4 (LT_PREREQ): Declare the minimum release number
X-Git-Tag: release-1-9b~184
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e9b269e4fa641b83c2208325d68494e40719c185;p=thirdparty%2Flibtool.git

* m4/libtool.m4 (LT_PREREQ): Declare the minimum release number
that is required for the calling code.
* doc/libtool.texi (AC_PROG_LIBTOOL): Document it.
* NEWS: Updated.
---

diff --git a/ChangeLog b/ChangeLog
index 9f9874237..22b89a02b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,9 +1,16 @@
+2004-02-06  Gary V. Vaughan  <gary@gnu.org>
+
+	* m4/libtool.m4 (LT_PREREQ): Declare the minimum release number
+	that is required for the calling code.
+	* doc/libtool.texi (AC_PROG_LIBTOOL): Document it.
+	* NEWS: Updated.
+
 2004-02-05  Peter O'Gorman  <peter@pogma.com>
-	
+
 	* ltmain.in (infer_tag, win32_libid): Style changes. Rename
 	infer_tag to func_infer_tag and win32_libid to func_win32_libid.
 	* m4/libtool.m4 (cygwin): rename win32_libid to func_win32_libid.
-	
+
 2004-02-04  Peter O'Gorman  <peter@pogma.com>
 
 	* ltmain.in (infer_tag): Move tag inferrence to a shell function.
@@ -28,7 +35,7 @@
 
 2004-01-31  Peter O'Gorman  <peter@pogma.com>
 
-	* m4/libtool.m4 (_LT_CONFIG_STATUS_DECLARE): Change `echo to 
+	* m4/libtool.m4 (_LT_CONFIG_STATUS_DECLARE): Change `echo to
 	`$echo, causes problems when builtin echo is broken. Reported
 	by Ralf Wildenhues <Ralf.Wildenhues@gmx.de>.
 
diff --git a/NEWS b/NEWS
index 8bc31ff5a..68fc53c0f 100644
--- a/NEWS
+++ b/NEWS
@@ -1,6 +1,7 @@
 NEWS - list of user-visible changes between releases of GNU Libtool
 
 New in 1.5b: 2004-??-??; CVS version 1.5a, Libtool team:
+* New LT_PREREQ macro for specifying minimum libtool requirement.
 * Like automake, libtoolize no longer installs config.guess and config.sub by
   default.  Use new --install option to get the old behaviour.
 * libtool script is now created by config.status.  Instead of interrogating
diff --git a/doc/libtool.texi b/doc/libtool.texi
index bacdf4f8e..87e439911 100644
--- a/doc/libtool.texi
+++ b/doc/libtool.texi
@@ -1638,6 +1638,17 @@ If you are using GNU Autoconf (or Automake), you should add a call to
 adds many new tests to the @code{configure} script so that the generated
 libtool script will understand the characteristics of the host:
 
+@defmac LT_PREREQ(@var{VERSION})
+Ensure that a recent enough version of Libtool is being used.  If the
+version of Libtool used for @code{AC_PROG_LIBTOOL} is earlier than
+@var{version}, print an error message to the standard
+error output and exit with failure (exit status is 63).  For example:
+
+@example
+LT_PREREQ(@value{VERSION})
+@end example
+@end defmac
+
 @defmac AC_PROG_LIBTOOL
 @defmacx AM_PROG_LIBTOOL
 Add support for the @samp{--enable-shared} and @samp{--disable-shared}
diff --git a/m4/libtool.m4 b/m4/libtool.m4
index 43924aab3..04ce04384 100644
--- a/m4/libtool.m4
+++ b/m4/libtool.m4
@@ -39,6 +39,17 @@ m4_ifdef([AC_PROVIDE_IFELSE],
 	         [m4_ifdef([AC_PROVIDE_$1],
 		           [$2], [$3])])])
 
+# LT_PREREQ(VERSION)
+# ------------------
+# Complain and exit if this libtool version is less that VERSION.
+m4_define([LT_PREREQ],
+[m4_if(m4_version_compare(m4_defn([LT_PACKAGE_VERSION]), [$1]), -1,
+       [m4_default([$3],
+		   [m4_fatal([Libtool version $1 or higher is required],
+		             63)])],
+       [$2])])
+
+
 # AC_PROG_LIBTOOL
 # ---------------
 AC_DEFUN([AC_PROG_LIBTOOL],