Fix bug in autoconf-2.50 -> autoconf-2.13 backport.

diff --git a/m4/mbswidth.m4 b/m4/mbswidth.m4
index 74fce1b4e40b476d94c1480fa4d3a059e50d6080..0c6f4cb4032858537390b3d3dd40b938650fbe6c 100644 (file)
--- a/m4/mbswidth.m4
+++ b/m4/mbswidth.m4
@@ -21,9 +21,12 @@ AC_DEFUN(jm_PREREQ_MBSWIDTH,
 #endif
 ], ac_cv_have_decl_wcwidth=yes, ac_cv_have_decl_wcwidth=no)])
   if test $ac_cv_have_decl_wcwidth = yes; then
-    AC_DEFINE(HAVE_DECL_WCWIDTH, 1,
-      [Define to 1 if you have the declaration of wcwidth().])
+    ac_val=1
+  else
+    ac_val=0
   fi
+  AC_DEFINE_UNQUOTED(HAVE_DECL_WCWIDTH, $ac_val,
+    [Define to 1 if you have the declaration of wcwidth(), and to 0 otherwise.])
 
   AC_MBSTATE_T
 ])