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Segfault related to exec-shield when attempting to compile emacs versions 21.3.50 or 22.0.50



This has been reported to Bugzilla as bug number 160184. I haven't yet received a fix, and am posting it to see if anyone else has had the problem, or been able to solve it.

******

When attempting to compile emacs versions 21.3.50 or 22.0.50 under FC4, the process fails with the below messages:

   Dumping under names emacs and emacs-21.3.50
   **************************************************
   Warning: Your system has a gap between BSS and the
   heap (19112100 byte).  This usually means that exec-shield
   or something similar is in effect.  The dump may
   fail because of this.  See the section about
   exec-shield in etc/PROBLEMS for more information.
   **************************************************
   make[1]: *** [bootstrap-emacs] Segmentation fault
   make[1]: Leaving directory `/home/fc4user/downloads/emacs/emacs/src'
   make: *** [bootstrap-build] Error 2


Here's what I tried and what happened

1. I was attempting to compile either emacs 22.0.50 from CVS download or emacs 21.3.50 from source file "emacs-21.3.50-20041117.tar.gz" (available at http://sourceforge.net/project/showfiles.php?group_id=17203&package_id=35022&release_id=78364)

2. I issued "setarch i386 ./configure". This worked without error messages.

3. I then issued "setarch i386 make bootstrap". This failed with the following messages

   <snip>
   Loading menu-bar (source)...
   Loading paths.el (source)...
   Loading startup (source)...
   Loading emacs-lisp/lisp (source)...
   Loading textmodes/page (source)...
   Loading register (source)...
   Loading textmodes/paragraphs (source)...
   Loading emacs-lisp/lisp-mode (source)...
   Loading textmodes/text-mode (source)...
   Loading textmodes/fill (source)...
   ((215107 . 8234) (11326 . 3) (584 . 196) 1542561 223532 (66 . 7) (18
   . 43) (23593 . 599))
   Loading replace (source)...
   Loading abbrev (source)...
   Loading buff-menu (source)...
   Loading emacs-lisp/float-sup (source)...
   ((222553 . 3029) (11533 . 2) (585 . 195) 1575995 223956 (72 . 4) (18
   . 43) (24103 . 215))
   Loading vc-hooks (source)...
   Loading ediff-hook (source)...
   ((225572 . 2596) (11635 . 0) (586 . 194) 1584303 223973 (72 . 4) (18
   . 43) (24359 . 337))
   Finding pointers to doc strings...
   Finding pointers to doc strings...done
   Dumping under names emacs and emacs-21.3.50
   **************************************************
   Warning: Your system has a gap between BSS and the
   heap (19112100 byte).  This usually means that exec-shield
   or something similar is in effect.  The dump may
   fail because of this.  See the section about
   exec-shield in etc/PROBLEMS for more information.
   **************************************************
   make[1]: *** [bootstrap-emacs] Segmentation fault
   make[1]: Leaving directory `/home/fc4user/downloads/emacs/emacs/src'
   make: *** [bootstrap-build] Error 2


I also tried several other things, like issuing " echo 0 > /proc/sys/kernel/exec-shield' " to turn off exec-shield completely before compiling. This didn't work also.


Both of these versions of Emacs compiled under FC3, using the above process.

FC4 User






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