On 6 Jan 2014 17:55, "Sean Kelly" <s...@invisibleduck.org> wrote: > > On Monday, 6 January 2014 at 11:47:57 UTC, Dwhatever wrote: >> >> I'm trying to do the same, trying to compile OS free code but I haven't so far been successful because D requires the runtime and then also Phobos. > > > D doesn't require Phobos. The compiler implicitly links against > libphobos.a, but that isn't the same thing. All a D app actually > needs is Druntime. And you can replace the GC in Druntime with > gcstub (backed by malloc) and stub out the thread API if these > aren't appropriate for your target.
GDC provides a configure flag to compile in gcstub instead of the standard GC. There's also a pthread inspired thread API (gcc.gthreads) that provides a common interface to the platform-specific implementation - not all gcc supported thread models have been ported in yet (only posix and win32) though on bare metal you may just want to compile with thread model=single.
