Well, success with the patch that I will post shortly, failure otherwise. andy uname -a: CYGWIN32_NT ARMAGEDON 4.0 19.1 i586 unknown ./configure '--site-includes=/usr/local/include' '--package-path=/usr/gnu/lib/xemacs/packages' '--prefix=/usr/gnu' XEmacs 21.0-b39 "Russian White-pre4" configured for `i386-pc-cygwin32'. Where should the build process find the source code? /development/build/xemacs-20 What installation prefix should install use? /usr/gnu What operating system and machine description files should XEmacs use? `s/cygwin32.h' and `m/intel386.h' What compiler should XEmacs be built with? gcc -g -O2 -Wall -Wno-switch Should XEmacs use the GNU version of malloc? yes Should XEmacs use the relocating allocator for buffers? default What window system should XEmacs use? x11 Where do we find X Windows header files? /usr/X11R6.3/include Where do we find X Windows libraries? /usr/X11R6.3/lib Additional header files: /usr/local/include Compiling in support for XAUTH. Compiling in support for XPM images. Compiling in support for GIF image conversion. Compiling in support for JPEG image conversion. Compiling in support for PNG image conversion. Compiling in support for TIFF image conversion. Compiling in support for GNU DBM. Compiling in support for ncurses. Compiling in File coding support. Compiling in support for OffiX. Compiling in support for proper session-management. Using Lucid menubars. Using Lucid scrollbars. Using Athena dialog boxes. movemail will use "dot-locking" for locking mail spool files. Using Lisp_Objects with minimal tagbits. Using indexed lrecord implementation. Compiling in extra code for debugging. Compiling in code for checking XEmacs memory usage. WARNING: --------------------------------------------------------- WARNING: Compiling in support for runtime error checking. WARNING: XEmacs will run noticeably more slowly as a result. WARNING: Error checking is on by default for XEmacs beta releases. WARNING: ---------------------------------------------------------