maint: factor copyright year.

[bison.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 415a17508af0421b68c0bf60a1f3b876f536f795..e572b813aa832ab7644a1eae50b82c441bbc90af 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -26,9 +26,9 @@ m4_pattern_forbid([^gl_[A-Z]])
 AC_INIT([GNU Bison],
         m4_esyscmd([build-aux/git-version-gen .tarball-version]),
         [bug-bison@gnu.org])
-AC_DEFINE([PACKAGE_COPYRIGHT_YEAR], [2012],
-          [The copyright year for this package])
 AC_SUBST([PACKAGE_COPYRIGHT_YEAR], [2012])
+AC_DEFINE_UNQUOTED([PACKAGE_COPYRIGHT_YEAR], [$PACKAGE_COPYRIGHT_YEAR],
+                   [The copyright year for this package])
 
 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_MACRO_DIR([m4])