Am Thu, 18 Oct 2012 17:51:46 +0200 schrieb "Timo Sintonen" <t.sinto...@luukku.com>:
> > > > I shouldn't have thought there would be any asserts when > > compiling the > > library (at least I don't get any). > > > > Regards > > Yes, but I need the library for the cross compiled target, > arm-eabi. This target doen not define any os. There are several > places where is a test for mac/win/linux and if none of them, the > last choice is "unsupported target". If it pass, some symbols > are not defined at all causing trouble somewhere else. So we need > a version define like "embedded" or "no_os" that leaves totally > out all os related stuff like file access or provides dummy > functions. > > Druntime might not need file access/etc as long as version(Posix) isn't defined for your target. Nobody has used GDC/D/druntime on a system without OS afaik. So you have to pioneer ;-) I see two solutions: * Create your own, simple runtime library. There's no real documentation on the minimum interface a runtime must implement (the compiler calls back into the runtime), so this would be a little tricky. * Adjust druntime. You can probably throw out 90% of the druntime code (core.sys.*). Make sure the basic code work with ansi C. Forget about things like threading (core.thread, core.sync), those require system specific code and can be implemented later on. Your biggest problem is probably the GC and TLS. If your target libc supports TLS, things should work just fine. If not, there's some additional work waiting. You need to reimplement some functions for the GC (get stack top/bottom...) which shouldn't be too difficult, but getting the TLS range might be tricky, depending on your system. You could also try to remove the GC completely, but the language currently assumes that a GC is available (things like dynamic array appending, ...). A proper -nogc switch which disables GC features like array appending would be a solution, but nothing like this is implemented yet, IIRC. (But I think there was some kind of --betterc switch which could be a start?)
