-silent-dup-error is still broken, despite my previous attempt to fix it,
which only worked with -nolock.
Updated version of cygwin-fix-silent-dup-error.patch attached really fixes it.
Fix the long-broken -silent-dup-error option
---
xserver/hw/xwin/InitOutput.c | 87 ---
This fixes multiwindow external window manager('-mwextwm') mode to build again.
Note this depends on Apple's Xplugin.h to build the rootless extension (just
for some typedefs I think), which is no longer included in the X.Org tree, as
an old version once was.
Google can find you a copy.
Cyg