Hi Josh,
> On May 3, 2018, at 2:45 PM, Andreas Höschler wrote:
>
>> Segmentation fault
>> ...
>> while accessing one of its instance variables, actually in the
>>
>> NSLog(@"routeVisible: %d", _routeVisible);
>>
>> line. When I comment this line out I get the same error in the next line
>> while accessing _routePath and so on. I am clueless how to fix this. The
>> code works on MacOSX and also with on an ancient GNUstep/Debian/Kubuntu
>> setup. Any idea what might cause this trouble on Ubuntu 16.04 with the
>> latest GNUstep or how to further track this down?
>
>
> Currently, libobjc2's non-fragile ABI can cause segfaults on Debian-based
> distros (& perhaps other Linux distros) when directly accessing some class'
> instance variables.
>
> There's a few workarounds for Ubuntu:
>
> * The Ubuntu install script on the wiki has a workaround (it checks out an
> old version of GNUstep-make that builds using the fragile ABI):
> http://wiki.gnustep.org/index.php/GNUstep_under_Ubuntu_Linux
> <http://wiki.gnustep.org/index.php/GNUstep_under_Ubuntu_Linux>
> * If you need the non-fragile ABI, there's a script + objc2-patch attached to
> this list message:
> http://lists.gnu.org/archive/html/discuss-gnustep/2017-12/msg00129.html
> <http://lists.gnu.org/archive/html/discuss-gnustep/2017-12/msg00129.html>
>
> * David is working on a new ABI, and you can try his experimental builds:
> http://lists.gnu.org/archive/html/gnustep-dev/2018-04/msg00051.html
> <http://lists.gnu.org/archive/html/gnustep-dev/2018-04/msg00051.html>
Thanks so much. That was the solution for my problem. The following lines
extracted from your script got me a working GNUstep environment:
apt-get install git-core
git --version
cd /usr/src/GNUstep
git clone https://github.com/gnustep/tools-make.git
cd tools-make
git checkout `git rev-list -1 --first-parent --before=2017-04-06 master`
./configure --enable-debug-by-default --with-layout=gnustep
. /usr/GNUstep/System/Library/Makefiles/GNUstep.sh
cd libs-base-master
make distclean
./configure
make
make install
cd ..
cd libs-gui-master
make distclean
./configure
make
make install
cd ..
cd libs-back-master
make distclean
./configure
make
make install
cd ..
The standard installation without the make hack simply does not work at all on
Ubuntu 16! :-(
Thanks so much,
Andreas
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