Re: Cross-compiling GNUstep?

[Richard Frith-Macdonald]

On 29 Dec 2013, at 12:56, David Chisnall <address@hidden> wrote:

> Hello everyone,
> 
> I'm trying to cross-compile GNUstep, and since I'm sure I'm not the first 
> person to try this, I wondered if anyone had written up how to do it?  I am 
> trying to build from FreeBSD/amd64 for FreeBSD/MIPS64.  I have a 
> cross-compiler and sysroot setup.  Building the runtime was trivial - just 
> point cmake at the cross-compile toolchain file - what do I need to do for 
> Make / base so that:
> 
> - It knows that I don't actually want -make on the target platform.
> - I get an installed version somewhere on my local machine that I can copy to 
> a different location on the remote
> - All of the correct cross-compile flags are passed to the compiler
> 
> I think Ivan has been through all of this recently for Android?

Going back to the start of thread (since it seems to have gone completely off 
topic), I took a quick look at the documentation (radical concept eh).
The gnustep-make README document says (in the first introductory paragraph) 
that it supports cross compilation.
The gnustep-make INSTALL document has a section on it and gives an example:

     ./configure --target=i386-mingw32
     make install

Now, I've never done any cross compilation, and probably most other people 
don't do it eiother, so I don't know if cross compilation support has 
bit-rotted, support for cross-compiling for a particular target is certainly 
there, ad this (the --target= option) appears to be the standard mechanism (a 
web search for cross compiling and autoconf finds it immediately).

I guess the answer (howto do it) is that you configure for the target OS/CPU 
you want, then just build as normal.  The INSTALL documentation also explains 
about using a non-flattened layout if you want to have multple architectures in 
the same filesystrem hierarchy etc.

Of course, if there are any bit-rotted makefiles, we should correct them and 
make a bugfix release of the affected package.