Re: GNUstep Startup fails to build on Fedora Core 5

[Adam Fedor]

FYI, I've looked into this a lot, and it doesn't appear that there is  
a good solution to it. First note that this is not a GNUstep problem,  
but a problem with ffcall and interaction with PaX. PaX effectively  
prohibits making any memory executable (for instance via mprotect or  
mmap), but this is pretty fundamental to how ffcall works. There's  
been a bug report in the ffcall bug tracker about this for several  
months and no one has done anything about it there, so I'm guessing  
they at least some what agree.

I think the only solution is to use libffi.  libffi, from what I can  
tell, builds a trampoline on the stack using assembly language, which  
I'm guessing PaX recognizes and allows.

I've put in some configure tests in GNUstep, so you'll at least know  
this is the problem, but that's all I can do otherwise.

On Feb 14, 2007, at 5:59 PM, Jason Addison wrote:

> This has been reported before. I just wanted to let you know it wasn't
> a one off thing. I think it is conflicting with SELinux somehow.
> Sorry, I don' t really know much about it. Here a reports of ffcall
> conflicting with FC5's SELinux settings (that may or may not be
> relevent):
>
> http://www.nabble.com/--clisp-Bugs-1531290---ffcall-SELlinux- 
> violation-on-Fedora-Core-5-t2023857.html
>
> $ uname -a
> Linux 2.6.18-1.2257.fc5smp #1 SMP Fri Dec 15 16:33:51 EST 2006 i686
> i686 i386 GNU/Linux
> $ gcc -v
> Using built-in specs.
> Target: i686-pc-linux-gnu
> Configured with: ../configure --prefix=/home/jra/usr/gcc-4.1.1
> --enable-shared --enable-threads=posix --enable-checking=release
> --with-system-zlib --enable-__cxa_atexit
> --disable-libunwind-exceptions --enable-libgcj-multifile
> --enable-languages=c,c++,objc,obj-c++,java,fortran
> --enable-java-awt=gtk --disable-dssi --with-cpu=pentium4
> Thread model: posix
> gcc version 4.1.1
> $ ./InstallGNUstep --prefix=/home/jra/usr/GNUStep/
>
> ...
>
> Creating GSspell.service/....
> Compiling file GSspell.m ...
> Linking service GSspell ...
> Creating GSspell.service/Resources...
> Creating GSspell.service/Resources/Info-gnustep.plist...
> trampoline: cannot make memory executable
> /bin/sh: line 1:  2314 Aborted
> ././shared_obj/make_services --test
> GSspell.service/Resources/Info-gnustep.plist
> gmake[2]: *** [GSspell.service/Resources/Info-gnustep.plist] Error 1
> gmake[1]: *** [GSspell.all.service.variables] Error 2
> gmake[1]: Leaving directory
> `/home/jra/usr/src/srt/GNUStep/src/gnustep-startup-0.16.1/build/ 
> gnustep-gui-0.11.0/Tools'
> gmake: *** [internal-all] Error 2
> gmake[2]: *** [GSspell.service/Resources/Info-gnustep.plist] Error 1
> gmake[1]: *** [GSspell.all.service.variables] Error 2
> gmake: *** [internal-all] Error 2
> ---------------------------------------------------------
> Installation of GNUstep Gui failed. Send the
> /home/jra/usr/src/srt/GNUStep/src/gnustep-startup-0.16.1/build/ 
> logs.tar.gz
> file to bug-gnustep@gnu.org for help
> ---------------------------------------------------------
> <logs.tar.gz>
> _______________________________________________
> Bug-gnustep mailing list
> Bug-gnustep@gnu.org
> http://lists.gnu.org/mailman/listinfo/bug-gnustep