Re: Update libobjc2 build instructions for Ubuntu/Android/Darling?

[Josh Freeman]

Hi David,

   Sorry, my mistake - I mixed up two different libobjc2 issues I'd  
had, only one of which was a libobjc2 build problem (old version from  
svn didn't build because it doesn't have your fix for clang versions  
with missing CMake modules).

   You're correct - libobjc2 (from github) builds fine as a  
standalone; The statement below should've read, "... issues building  
*GNUstep* unless GNUstep make is built [before libobjc2]".

   The issue with building libobjc2 before GNUstep make (on Ubuntu at  
least) is that libobjc2's install path depends on whether gnustep- 
config is present: If it is, it installs to /usr/GNUstep/Local/ 
Library/ - if not, it installs to /usr/local/lib/.

   GNUstep make's configure won't find libobjc2 in /usr/local/lib/;  
It'll still successfully configure ("checking for custom shared objc  
library... NONE"), build, & install, but then when trying to build  
GNUstep base, its configure will fail the "checking whether objc  
really works..." test because no runtime was found.

   So, GNUstep make's first (pre-libobjc2) install puts gnustep- 
config in place so that libobjc2 will install in a location where  
GNUstep make's second, post-libobjc2 install can find & use it as the  
runtime.

Cheers,

Josh


On Sep 25, 2015, at 1:37 AM, David Chisnall wrote:

> On 25 Sep 2015, at 05:55, Josh Freeman  
> <gnustep_lists@twilightedge.com> wrote:
> > The wiki's Ubuntu script builds libobjc2 before GNUstep make, but  
> > I've had issues building libobjc2 unless GNUstep make is built  
> > beforehand
>
> You should not have had these issues in the last five years.   
> libobjc2 uses CMake, not GNUstep Make, for building. The FreeBSD  
> package is built in a jail that does not contain any other  
> components (and libobjc2 is sometimes used without any other GNUstep  
> components).
>
> David
>
> -- Sent from my Cray X1