This file describes various problems that have been encountered
in compiling, installing and running GNU Emacs.
+* `Pid xxx killed due to text modification or page I/O error'
+
+On HP/UX, you can get that error when the Emacs executable is on an NFS
+file system. HP/UX responds this way if it tries to swap in a page and
+does not get a response from the server within a timeout whose default
+value is just ten seconds.
+
+If this happens to you, extend the timeout period.
+
* `expand-file-name' fails to work on any but the machine you dumped Emacs on.
-On some systems, if you use any of the functions which look up
-information in the passwd database before dumping Emacs (say, by using
+On Ultrix, if you use any of the functions which look up information
+in the passwd database before dumping Emacs (say, by using
expand-file-name in site-init.el), then those functions will not work
in the dumped Emacs on any host but the one Emacs was dumped on.
-Apparently, the Yellow Pages (or Network Information Service)
-functions cache information the first time they are called in the
-undumped emacs, this information gets included in the dumped
-executable, and it is then inaccurate if the executable is used on
-another host.
-
The solution? Don't use expand-file-name in site-init.el, or in
-anything it loads. Yuck.
+anything it loads. Yuck - some solution.
+
+I'm not sure why this happens; if you can find out exactly what is
+going on, and perhaps find a fix or a workaround, please let us know.
+Perhaps the YP functions cache some information, the cache is included
+in the dumped Emacs, and is then inaccurate on any other host.
* On some variants of SVR4, Emacs does not work at all with X.
with the Emacs executable. Redumping Emacs and then installing the
corresponding pair of files should fix the problem.
-* M-x shell immediately responds "Process shell exited abnormally with code 1".
-
-This is often due to inability to run the program `env'.
-This should be in the `etc' subdirectory of the directory
-where Emacs is installed, and it should be marked executable.
-
* Trouble using ptys on AIX.
People often instll the pty devices on AIX incorrectly.
Or you could set TERMCAP only when you set TERM--which should not
happen in a non-login shell.
-* Error compiling sysdep.c, "sioctl.h: no such file or directory".
-
-Among USG systems with TIOCGWINSZ, some require sysdep.c to include
-the file sioctl.h; on others, sioctl.h does not exist. We don't know
-how to distinguish these two kind of systems, so currently we try to
-include sioctl.h on all of them. If this #include gets an error, just
-delete it.
-
* X Windows doesn't work if DISPLAY uses a hostname.
People have reported kernel bugs in certain systems that cause Emacs
what transfer means caused this problem. Various network
file transfer programs are suspected of clobbering the high bit.
-The only verified ways to transfer GNU Emacs are `tar', kermit (in
-binary mode on Unix), and rcp or internet ftp between two Unix systems,
-or chaosnet cftp using raw mode.
-
If you have a copy of Emacs that has been damaged in its
nonprinting characters, you can fix them:
will not be seen. To fix this, do M-x byte-recompile-directory
and specify the directory that contains the Lisp files.
+Emacs should print a warning when loading a .elc file which is older
+than the corresponding .el file.
+
* The dumped Emacs (xemacs) crashes when run, trying to write pure data.
Two causes have been seen for such problems.
some drastic measures can make Emacs semi-work.
One drastic measure to ignore C-s and C-q, while sending enough
-padding that the terminal will not really lose any output.
-Ignoring C-s and C-q can be done by using keyboard-translate-table
-to map them into an undefined character such as C-^ or C-\. Sending
-lots of padding is done by changing the termcap entry. Here is how
-to make such a keyboard-translate-table:
-
- (let ((the-table (make-string 128 0)))
- ;; Default is to translate each character into itself.
- (let ((i 0))
- (while (< i 128)
- (aset the-table i i)
- (setq i (1+ i))))
- ;; Swap C-s with C-\
- (aset the-table ?\C-\\ ?\C-s)
- (aset the-table ?\C-s ?\C-\\)
- ;; Swap C-q with C-^
- (aset the-table ?\C-^ ?\C-q)
- (aset the-table ?\C-q ?\C-^)
- (setq keyboard-translate-table the-table))
+padding that the terminal will not really lose any output. To make
+such an adjustment, you need only invoke the function
+enable-flow-control-on with a list of terminal types in your own
+.emacs file. As arguments, give it the names of one or more terminal
+types you use which require flow control adjustments.
+Here's an example:
+
+(enable-flow-control-on "vt200" "vt300" "vt101" "vt131")
An even more drastic measure is to make Emacs use flow control.
To do this, evaluate the Lisp expression (set-input-mode nil t).
else
{
-* ld complains because `alloca' is not defined on your system.
-
-Alloca is a library function in 4.2bsd, which is used very heavily by
-GNU Emacs. Use of malloc instead is very difficult, as you would have
-to arrange for the storage to be freed, and do so even in the case of
-a longjmp happening inside a subroutine. Many subroutines in Emacs
-can do longjmp.
-
-If your system does not support alloca, try defining the symbol
-C_ALLOCA in the m-...h file for that machine. This will enable the use
-in Emacs of a portable simulation for alloca. But you will find that
-Emacs's performance and memory use improve if you write a true
-alloca in assembler language.
-
-alloca (N) should return the address of an N-byte block of memory
-added dynamically to the current stack frame.
-
* Vax C compiler bugs affecting Emacs.
You may get one of these problems compiling Emacs:
* C compilers lose on returning unions
-I hear that some C compilers cannot handle returning
-a union type. Most of the functions in GNU Emacs return
-type Lisp_Object, which is currently defined as a union.
+I hear that some C compilers cannot handle returning a union type.
+Most of the functions in GNU Emacs return type Lisp_Object, which is
+defined as a union on some rare architectures.
This problem will not happen if the m-...h file for your type
-of machine defines NO_UNION_TYPE. That is the recommended setting now.
+of machine defines NO_UNION_TYPE.
HCoop / bpt / emacs.git / blobdiff