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revision 1.129.2.2 by miles, Tue Oct 14 23:08:03 2003 UTC revision 1.129.2.3 by miles, Fri Nov 21 00:35:58 2003 UTC
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1  This file describes various problems that have been encountered  This file describes various problems that have been encountered
2  in compiling, installing and running GNU Emacs.  in compiling, installing and running GNU Emacs.
3    
4    * Segfault on GNU/Linux using certain recent versions of the Linux kernel.
5    
6    With certain recent Linux kernels (like the one of Redhat Fedora Core
7    1), the new "Exec-shield" functionality is enabled by default, which
8    creates a different memory layout that breaks the emacs dumper.
9    
10    You can check the Exec-shield state like this:
11    
12        cat /proc/sys/kernel/exec-shield
13    
14    It returns 1 or 2 when Exec-shield is enabled, 0 otherwise.  Please
15    read your system documentation for more details on Exec-shield and
16    associated commands.
17    
18    When Exec-shield is enabled, building Emacs will segfault during the
19    execution of this command:
20    
21    temacs --batch --load loadup [dump|bootstrap]
22    
23    To work around this problem, it is necessary to temporarily disable
24    Exec-shield while building Emacs, using the `setarch' command like
25    this:
26    
27        setarch i386 ./configure <configure parameters>
28        setarch i386 make <make parameters>
29    
30    * Characters are displayed as empty boxes or with wrong font under X.
31    
32    This can occur when two different versions of FontConfig are used.
33    For example, XFree86 4.3.0 has one version and Gnome usually comes
34    with a newer version.  Emacs compiled with --with-gtk will then use
35    the newer version.  In most cases the problem can be temporarily
36    fixed by stopping the application that has the error (it can be
37    Emacs or any other application), removing ~/.fonts.cache-1,
38    and then start the application again.
39    If removing ~/.fonts.cache-1 and restarting doesn't help, the
40    application with problem must be recompiled with the same version
41    of FontConfig as the rest of the system uses.  For KDE, it is
42    sufficient to recompile Qt.
43    
44  * Process output truncated on Mac OS X (Carbon) when using pty's.  * Process output truncated on Mac OS X (Carbon) when using pty's.
45    
46  There appears to be a problem with the implementation of pty's on the  There appears to be a problem with the implementation of pty's on the

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