Don't complain and fail if we can't build docs, just disable

Original commit message from CVS:
Don't complain and fail if we can't build docs, just disable

diff --git a/m4/gst-doc.m4 b/m4/gst-doc.m4
index bf02819..05a004e 100644 (file)
--- a/m4/gst-doc.m4
+++ b/m4/gst-doc.m4
@@ -86,7 +86,6 @@ AC_HELP_STRING([--enable-docs-build],[enable building of documentation]),
     if test "x$HAVE_GTK_DOC" = "xtrue" ; then
       BUILD_DOCS=yes
     else
-      AC_MSG_ERROR([you don't have gtk-doc, so don't use --enable-docs-build])
       BUILD_DOCS=no
     fi ;;
   no)  BUILD_DOCS=no ;;