https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118495
--- Comment #12 from Iain Buclaw <ibuclaw at gcc dot gnu.org> --- (In reply to Brecht Sanders from comment #11) > Apparently MinGW-w64 dosn't like extern char** environ; > > To avoid this issue for now I commented out the following in > gcc/cp/module.cc: > extern char **environ; > while (const char *var = environ[vars.length ()]) > vars.safe_push (var); > > > Then I'm one step closer and the result is: > That's what I'd expect if the host compiler was built without any D runtime libraries enabled. List of targets where the runtime library is built by default is maintained under libphobos/configure.tgt https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=libphobos/configure.tgt;h=b32300b52a185ae5563cc764bd2e960de969e437;hb=refs/heads/master If not one of the targets matched, you'll have to force it by configuring the host compiler with: --enable-libphobos --with-libphobos-druntime-only
