--- configure.ac	2008-08-07 11:43:13.000000000 +0200
+++ configure.ac.new	2008-09-13 00:28:56.000000000 +0200
@@ -509,6 +509,7 @@
 dnl Only build sgml docs when linuxdoc is available and
 dnl def.ents has been installed
 XORG_CHECK_LINUXDOC
+AM_CONDITIONAL(BUILD_PDFDOC, false)
 
 dnl Handle installing libxf86config
 AM_CONDITIONAL(INSTALL_LIBXF86CONFIG, [test "x$INSTALL_LIBXF86CONFIG" = xyes])