site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com Le 18 déc. 08 à 17:16, Jake McMahon a écrit : I'm trying to write, compile, and run Objective C 2.0 code on Linux. I'm not interested in targeting the Mac at all. On this page: http://www.opensource.apple.com/darwinsource/10.5.6/ This is the current Apple gcc 4.0 release This is the current Apple gcc 4.2 release Besides grabbing one of the four above, and the obj4 package, is there anything else that I really need? I mean, is it even possible to build Apple's gcc packages on a computer that's not running Mac OS and get it to compile and run Objective-C 2.0 apps. On Thu, Dec 18, 2008 at 11:05 AM, Jean-Daniel Dupas <devlists@shadowlab.org> wrote: AFAK, the GNU runtime does not support properties, and other Obj-C 2 features. (I'm not sure it even support @try/@catch and @synchronize) And the Next/Apple Runtime is not available on Linux. Le 18 déc. 08 à 16:33, Jake McMahon a écrit : The run time has been released though. So advanced stuff aside, a basic 2.0 app that utilizes accessors should work, no? On Thu, Dec 18, 2008 at 10:07 AM, Jean-Daniel Dupas <devlists@shadowlab.org> wrote: Le 18 déc. 08 à 15:50, Jake McMahon a écrit : I'm trying to install all the necessary tools needed to compile Objective C 2.0 code on a Linux workstation. I've downloaded the gcc-5465 package off the Apple website and executed: followed by: make bootstrap if I do make (note, no bootstrap) _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.appl... So that leaves me with just working with the available source packages. -gcc-5465 -gcc_42-5531 I dont think it's possible to compile the obj-c runtime on Linux (without a lot of works). And the current Apple Runtime require autozone (the garbage collector library that is neither ported to linux). So to compile an objc 2 app, you need to: - port the autozone library to linux. - port the apple runtime. - port the apple compiler (I don't think the apple gcc branche compile on linux) And even if you do that, the Apple runtime expect that application that use it, link on the Foundation framework (I mentioned exception, but this is not the only feature that rely on Foundation, there is also more fundamental feature like forwarding), so even after that, I'm not sure you will be able to run your freshly compiled application. So basically, at the question, "is it even possible to build Apple's gcc packages on a computer that's not running Mac OS ?", I will answer No. That said, if you are really interested in Obj-C dev on Linux, you should have a look at the étoilé project. (http://etoileos.com/). This is an obj-c user environment (set of frameworks). But the author was not very happy with the GNU runtime, and it did its own runtime. There is far more chance to see ObjC 2 support in this runtime in the near futur than seeing it in the GNU runtime. I don't know what is the current status of the étoilé runtime and compiler (based on clang), but feel free to contact the étoilé team to know more about it ( http://etoileos.com/support/team/ ). It depends what you want. Do you want to compile Mac OS X binary on Linux (and run them on OS X) or produce a Linux binary. To run, an objc application need a runtime library (libobjc). When you compile objc sources, the compiler generate call to this library and create structure to represent class and other objc info in a format defined by this library. Actually there is two major runtime. The GNU one (provided with GCC), and the Apple one (aka Next Runtime for historical raison) provided on Darwin source as the obj4 package. When you define and access properties in an objc 2 application, the compiler generate call to the runtime (like call to objc_getProperty() or objc_setProperty()). If the installed libobjc does not provide theses functions, you will not be able pass the linker step. ../configure --prefix=/tmp/123/ --enable-languages=objc /usr/include/limits.h:125:26: error: no include path in which to search for limits.h make[2]: *** [crtbegin.o] Error 1 make[2]: Leaving directory `/home/user/Download/gcc-5465/xxx/gcc' make[1]: *** [stage1_build] Error 2 make[1]: Leaving directory `/home/user/Download/gcc-5465/xxx/gcc' make: *** [bootstrap] Error 2 ../../gcc/objc/objc-act.c: In function 'objc_init': ../../gcc/objc/objc-act.c:716: warning: suggest braces around empty body in an 'if' statement ../../gcc/objc/objc-act.c: In function 'objc_init_exceptions': ../../gcc/objc/objc-act.c:7745: error: 'darwin_macosx_version_min' undeclared (first use in this function) ../../gcc/objc/objc-act.c:7745: error: (Each undeclared identifier is reported only once ../../gcc/objc/objc-act.c:7745: error: for each function it appears in.) ../../gcc/objc/objc-act.c: In function 'objc_create_init_utf16_var': ../../gcc/objc/objc-act.c:19227: warning: implicit declaration of function 'objc_cvt_utf8_utf16' make[1]: *** [objc/objc-act.o] Error 1 make[1]: Leaving directory `/home/user/Download/gcc-5465/xxx/gcc' make: *** [all-gcc] Error 2 Is there something I'm missing here? I know there is already a gnu implementation of objc but I want to use the features of version 2.0. Any help or suggestions would be GREATLY! appreciated. Compiling objc 2 on linux is one thing. Running it is another. Without the Next Runtime on your linux box, you will not be able to use Obj-C 2. The Next Runtime and the Gnu Runtime are not compatibles. Not to mention that a part of the Apple runtime is in the Foundation framework (like exception handling), and even if you managed to port the Next Runtime on Linux, you will not be able to use it for advanced features. This email sent to site_archiver@lists.apple.com