Trying to build Wine on a new tester which initially had too few packages installed I ran into the following. In file included from bitblt.c:33: x11drv.h:30:22: error: X11/Xlib.h: No such file or directory x11drv.h:31:27: error: X11/Xresource.h: No such file or directory x11drv.h:32:23: error: X11/Xutil.h: No such file or directory x11drv.h:33:23: error: X11/Xatom.h: No such file or directory x11drv.h:44:21: error: X11/Xmd.h: No such file or directory x11drv.h:45:24: error: X11/Xproto.h: No such file or directory Indeed include/config.h has HAVE_X11_XLIB_H undefined since, well, all these headers indeed are missing. On the other hand, configure did not halt. In fact, configure did not even warn about this situation unlike it does in other cases. How to fix this? Should dlls/winex11.drv just not be built in such a case? Should configure error out? (We do have --without-x, too, though.) Anything else? Currently we do pass configure and then run into a compile failure later on. Gerald