===============================
** General
+*** Don't use -O2 with gcc 2.8.1 and egcs 1.0 under SPARC architectures
+without also using `-fno-schedule-insns'.
+
+gcc will generate incorrect code otherwise, typically resulting in
+crashes in the function skip-syntax-backward.
+
+*** egcs-1.1
+
+There have been reports of egcs-1.1 not compiling XEmacs correctly on
+Alpha Linux. There have also been reports that egcs-1.0.3a is O.K.
+
*** Don't use -O2 with gcc 2.7.2 under Intel/XXX without also using
`-fno-strength-reduce'.
** AIX
*** On AIX 4.3, you must specify --with-dialogs=athena with configure
+*** The libXt shipped with AIX 4.3 is broken. This causes xemacs -nw
+ to fail in various ways. The solution is to build against stock
+ X11R6.
+
*** On AIX, you get this compiler error message:
Processing include file ./XMenuInt.h
Marcus Thiessel <marcus_thiessel@hp.com>
- Unfortunately, XEmacs releases <21.0 don't work with Motif2.1. It
- will compile but you will get excessive X11 errors like
+ Unfortunately, XEmacs releases prior to 21.0 don't work with
+ Motif2.1. It will compile but you will get excessive X11 errors like
xemacs: X Error of failed request: BadGC (invalid GC parameter)
Note: Much of the above entry is probably not valid for XEmacs 21.0
and later.
+** Cygwin
+*** In general use etc/check_cygwin_setup.sh to trap environment problems.
+
+The script etc/check_cygwin_setup.sh will attempt to detect whether
+you have a suitable environment for building. This script may not work
+correctly if you are using ash instead of bash (see below).
+
+*** X11 not detected.
+
+This is usually because xmkmf is not in your path or because you are
+using the default cygwin shell. The default cygwin shell (/bin/sh.exe)
+is ash which appears to work in most circumstances but has some wierd
+failure modes. I recommend replacing sh.exe with bash.exe, this will
+mean configure is slower but more reliable.
+
+*** Subprocesses do not work.
+
+You do not have "tty" in your CYGWIN32 (for b19) or CYGWIN (for b20)
+environment variable. This must be set in your autoexec.bat (win95) or
+the system properties (winnt) as it must be read before the cygwin dll
+initializes.
+
+*** ^G does not work on hung subprocesses.
+
+This is a known problem. It can be remedied with cygwin b20 or greater
+by defining BROKEN_SIGIO in src/s/cygwin32.h, however this currently
+leads to instability in XEmacs.
+
+*** The XEmacs executable crashes at startup.
+
+This can be caused by many things.
+
+If you are running with X11 you need to have cygwin b19 or cygwin
+b20.1 or greater, cygwin b20 will not work.
+
+If you are running with cygwin b19 make sure you are using egcs 1.0.2
+rather than vanilla gcc. XEmacs builds by default with -O3 which does
+not work with the gcc that ships with b19. Alternatively use -O2.
+
+*** The info files will not build.
+
+makeinfo that ships with cygwin (all versions) is a noop. You need to
+obtain makeinfo from somewhere or build it yourself.
+
+*** I have no graphics.
+
+You need to obtain the various graphics libraries. Pre-built versions
+of these and the X libraries are located on the XEmacs website in
+ftp://ftp.xemacs.org/pub/aux/cygwin*.
+
+*** There are no images in the toolbar buttons.
+
+You need version 4.71 of commctrl.dll which does not ship with windows
+95. You can get this by installing IE 4.0 or downloading it from the
+microsoft website.
* Problems with running XEmacs
*** You type Control-H (Backspace) expecting to delete characters.
Emacs has traditionally used Control-H for help; unfortunately this
-interferes with its use as Backspace on TTY's. One way to solve this
-problem is to put this in your .emacs:
+interferes with its use as Backspace on TTY's. As of XEmacs 21,
+XEmacs looks at the "erase" setting of TTY structures and maps C-h to
+backspace when erase is set to C-h. This is sort of a special hack,
+but it makes it possible for you to use the standard:
- (when (eq tty-erase-char ?\C-h)
- (keyboard-translate ?\C-h ?\C-?)
- (global-set-key "\M-?" 'help-command))
+ stty erase ^H
-This checks whether the TTY erase char is C-h, and if it is, makes
-Control-H (Backspace) work sensibly, and moves help to Meta-? (ESC ?).
+to get your backspace key to erase characters. The erase setting is
+recorded in the Lisp variable `tty-erase-char', which you can use to
+tune the settings in your .emacs.
-Note that you can probably also access help using F1.
+A major drawback of this is that when C-h becomes backspace, it no
+longer invokes help. In that case, you need to use f1 for help, or
+bind another key. An example of the latter is the following code,
+which moves help to Meta-? (ESC ?):
+
+ (global-set-key "\M-?" 'help-command)
*** Mail agents (VM, Gnus, rmail) cannot get new mail
** Linux
+*** You get crashes in a non-C locale with Linux GNU Libc 2.0.
+
+Internationalization was not the top priority for GNU Libc 2.0.
+As of this writing (1998-12-28) you may get crashes while running
+XEmacs in a non-C locale. For example, `LC_ALL=en_US xemacs' crashes
+while `LC_ALL=C xemacs' runs fine. This happens for example with GNU
+libc 2.0.7. Installing libintl.a and libintl.h built from gettext
+0.10.35 and re-building XEmacs solves the crashes. Presumably soon
+everyone will upgrade to GNU Libc 2.1 and this problem will go away.
+
*** `C-z', or `M-x suspend-emacs' hangs instead of suspending.
If you build with `gpm' support on Linux, you cannot suspend XEmacs
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