By no means do I claim to have done things the right way, but it seems that work that I did plus work based on Emmanuel's patches did things right for Android.
It may be worth looking through my commits around April and May 2013 into -make and -base. Then look at: http://bitbucket.org/ivucica/gnustep-android/ I never completed the work, but I tried it Thursday and: - nonupstreamed patches failed to apply due to changes in GNUstep - there was a linker error, IIRC with sysinfo(), probably because Bionic doesn't expose that. There have been some warnings and errors from configure scripts mentioning that I am incorrectly trying to cross-compile but I didn't look into that closely yet. IIRC there wasn't much need for deep 'hacking' of the build process itself (otherwise I wouldn't try to upstream it; Emmanuel's patches tried to hack a lot of things which is why they could not be applied -- they'd break other platforms). On 29 Dec 2013 16:06, "David Chisnall" <thera...@sucs.org> wrote: > I managed to get -base cross-compiled, at least. I had to hack the > GNUmakefile, because even when I tell it that it's cross compiling for a > modern runtime, it correctly defines the OBJC2RUNTIME thing in the features > header, but not in the GNUmakefile. > > I couldn't manage to persuade our autoconf stuff to pass the required > [OJB]C[XX]FLAGS when trying to build things, so I had to make little > wrapper scripts that invoked clang[++] with the required arguments (-B, > --sysroot, -target, and so on). > > Note that poor cross-build support makes supporting embedded platforms > difficult, and embedded these days can easily mean 1GHz CPU and 256MB of > RAM. Unfortunately, this appears to be part of the legacy of autotools / > GNUstep Make. > > David > > On 29 Dec 2013, at 15:20, Fred Kiefer <fredkie...@gmx.de> wrote: > > > On 29.12.2013 13:56, David Chisnall 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? > > > > Hi David, > > > > you probably know about our wiki page on this subject > > http://wiki.gnustep.org/index.php/Cross_Compiling > > that isn't all that helpful. > > > > I tried to cross compile GNUstep myself years ago but failed in that > > attempt. The two biggest issues I remember where the configure scripts > > and GNUstep make. We rely heavily on our configure scripts to figure out > > how GNUstep core components should be compiled. The best thing you can > > do is copy the configure scripts over to the target system and try to > > run them there. Of course this requires all the development tools to be > > installed there as well. You then have the resulting configuration files > > (different ones for each component when I remember correctly) that you > > copy back to the cross-compilation environment. You could of course rely > > on autoconf to sort things out for you, but it didn't work for me or try > > to guess everything yourself :-( > > > > The problem with GNUstep make as I remember it was that it had a > > somewhat different view of the host/build/target triple than any other > > cross compilation system I know of. As a result helper tools get > > compiled for the target environment but will get run during the build. > > > > The best instructions I can find at the moment are in the INSTALL file > > of make. > > > > Hope this helps, > > Fred > > > > > > > > _______________________________________________ > > Gnustep-dev mailing list > > Gnustep-dev@gnu.org > > https://lists.gnu.org/mailman/listinfo/gnustep-dev > > > > -- Send from my Jacquard Loom > > > _______________________________________________ > Gnustep-dev mailing list > Gnustep-dev@gnu.org > https://lists.gnu.org/mailman/listinfo/gnustep-dev >
_______________________________________________ Gnustep-dev mailing list Gnustep-dev@gnu.org https://lists.gnu.org/mailman/listinfo/gnustep-dev
