/[emacs]/emacs/etc/PROBLEMS
ViewVC logotype

Diff of /emacs/etc/PROBLEMS

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 1.156.2.5 by miles, Thu Sep 9 09:36:28 2004 UTC revision 1.156.2.6 by miles, Wed Sep 29 07:22:19 2004 UTC
# Line 2333  The fix is to install a newer version of Line 2333  The fix is to install a newer version of
2333  *** Linux: Segfault during `make bootstrap' under certain recent versions of the Linux kernel.  *** Linux: Segfault during `make bootstrap' under certain recent versions of the Linux kernel.
2334    
2335  With certain recent Linux kernels (like the one of Redhat Fedora Core  With certain recent Linux kernels (like the one of Redhat Fedora Core
2336  1), the new "Exec-shield" functionality is enabled by default, which  1 and 2), the new "Exec-shield" functionality is enabled by default, which
2337  creates a different memory layout that breaks the emacs dumper.  creates a different memory layout that breaks the emacs dumper.
2338    
2339    Configure can overcome the problem of exec-shield if the architecture is
2340    x86 and the program setarch is present.  On other architectures no
2341    workaround is known.
2342    
2343  You can check the Exec-shield state like this:  You can check the Exec-shield state like this:
2344    
2345      cat /proc/sys/kernel/exec-shield      cat /proc/sys/kernel/exec-shield
2346    
2347  It returns 1 or 2 when Exec-shield is enabled, 0 otherwise.  Please  It returns non-zero when Exec-shield is enabled, 0 otherwise.  Please
2348  read your system documentation for more details on Exec-shield and  read your system documentation for more details on Exec-shield and
2349  associated commands.  associated commands.  Exec-shield can be turned off with this command:
2350    
2351        echo "0" > /proc/sys/kernel/exec-shield
2352    
2353  When Exec-shield is enabled, building Emacs will segfault during the  When Exec-shield is enabled, building Emacs will segfault during the
2354  execution of this command:  execution of this command:
2355    
2356  temacs --batch --load loadup [dump|bootstrap]      ./temacs --batch --load loadup [dump|bootstrap]
2357    
2358  To work around this problem, it is necessary to temporarily disable  To work around this problem, it is necessary to temporarily disable
2359  Exec-shield while building Emacs, using the `setarch' command like  Exec-shield while building Emacs, or, on x86, by using the `setarch'
2360  this:  command when running temacs like this:
2361    
2362        setarch i386 ./temacs --batch --load loadup [dump|bootstrap]
2363    
     setarch i386 ./configure <configure parameters>  
     setarch i386 make <make parameters>  
2364    
2365  *** Fatal signal in the command  temacs -l loadup inc dump.  *** Fatal signal in the command  temacs -l loadup inc dump.
2366    

Legend:
Removed from v.1.156.2.5  
changed lines
  Added in v.1.156.2.6

savannah-hackers-public@gnu.org
ViewVC Help
Powered by ViewVC 1.1.26