[SCM] GNU Autoconf source repository branch, master, updated. v2.62-42-g6eb7c48

[Eric Blake]

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- Log -----------------------------------------------------------------
commit 6eb7c48491791475a3e557f632445d76aa8ce57c
Author: Eric Blake <address@hidden>
Date:   Tue Jul 15 14:53:21 2008 -0600

    Avoid failure if version.m4 is omitted but m4_PACKAGE_* unused.
    
    * lib/m4sugar/m4sugar.m4 (m4_version_compare): Provide alternate
    definition for non-Autoconf clients of m4sugar.
    
    Signed-off-by: Eric Blake <address@hidden>

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog              |    6 ++++++
 lib/m4sugar/m4sugar.m4 |   14 ++++++++------
 2 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 8ae2ef6..6491d76 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2008-07-15  Eric Blake  <address@hidden>
+
+       Avoid failure if version.m4 is omitted but m4_PACKAGE_* unused.
+       * lib/m4sugar/m4sugar.m4 (m4_version_compare): Provide alternate
+       definition for non-Autoconf clients of m4sugar.
+
 2008-07-14  Eric Blake  <address@hidden>
 
        Tighten bound of potential speed of m4_append.
diff --git a/lib/m4sugar/m4sugar.m4 b/lib/m4sugar/m4sugar.m4
index a4d6f12..88eebf0 100644
--- a/lib/m4sugar/m4sugar.m4
+++ b/lib/m4sugar/m4sugar.m4
@@ -2243,12 +2243,14 @@ m4_sinclude([m4sugar/version.m4])
 # ----------------------------------------------------
 # Check this Autoconf version against VERSION.
 m4_define([m4_version_prereq],
-[m4_if(m4_version_compare(]m4_dquote(m4_defn([m4_PACKAGE_VERSION]))[, [$1]),
-       [-1],
-       [m4_default([$3],
-                  [m4_fatal([Autoconf version $1 or higher is required],
-                            [63])])],
-       [$2])])
+m4_ifdef([m4_PACKAGE_VERSION],
+[[m4_if(m4_version_compare(]m4_dquote(m4_defn([m4_PACKAGE_VERSION]))[, [$1]),
+       [-1],
+       [m4_default([$3],
+                   [m4_fatal([Autoconf version $1 or higher is required],
+                             [63])])],
+       [$2])]],
+[[m4_fatal([m4sugar/version.m4 not found])]]))
 
 
 


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