configure: Add quotes in error message.

diff --git a/configure.ac b/configure.ac
index d0dcf82..81ea6b7 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -91,7 +91,7 @@ fi
 dnl Check for POD (for manual pages).
 AC_CHECK_PROG(PERLDOC,perldoc,perldoc)
 if test "x$PERLDOC" = "x"; then
-    AC_MSG_ERROR([You must install the perldoc program])
+    AC_MSG_ERROR([You must install the 'perldoc' program])
 fi
 
 AC_CONFIG_HEADERS([config.h])