Improve configure script when error occurs

diff --git a/configure.ac b/configure.ac
index 64d8d17a811a1ae1e4c3a6bc1620e1677415b5f3..30987b94444e940fc0b963b5d1df50356fb3fd10 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -54,7 +54,7 @@ LIBCURL_CHECK_CONFIG([yes],[],[],[AC_MSG_ERROR([libcurl is needed but not found]
 
 # gdk-pixbuf-csource
 AC_CHECK_PROG([GDK_PIXBUF_CSOURCE],gdk-pixbuf-csource,[yes])
-if test $GDK_PIXBUF_CSOURCE != "yes"
+if test "x$GDK_PIXBUF_CSOURCE" != "xyes"
 then
   AC_MSG_ERROR([gdk-pixbuf-csource is needed but not found])
 fi