Can the runtime be disabled in GDC?

[Iain Buclaw]

On 1 December 2013 10:17, Iain Buclaw <ibuclaw at gdcproject.org> wrote:
>
> On Dec 1, 2013 8:25 AM, "Mike" <none at none.com> wrote:
>>
>> I finally got a GDC cross-compiler compiled, and I'm currently trying to
>> test it.  My simple "hello world" program does not use any D runtime
>> features, and I was able to compile it with LDC -noruntime -nodefaultlib.
>>
>> However, when I try to use GDC, I get...
>>
>> "cannot find source code for runtime library file 'object.d'"
>>
>> Are there similar options in GDC to disable the D runtime, or will I have
>> to write stubs?
>>
>> And, does GDC have any D-specific options?
>>
>
> You will require at least an object.d file to provide stubs - minilibd
> sbould be sufficient IIRC.
>
> There is -nodefaultlibs, or -nostdlib (which bypasses libgcc also). However,
> the compiler may generate calls to memcmp, memset, memcpy and memmove.  So
> these should be provided for if you are not linking against some sort of
> libc.
>
> If you are linking against libc, and just don't want phobos, then there is
> -nophoboslib.  This will also omit linking to druntime as currently there
> are bundled as one library.
>
> You also have -nostartfiles if you wish to also provide for the
> crtstart.o/crtend.o startup files.
>
> Currently there is no way to interface with dmd's -betterC switch. So if you

The interface with dmd's -betterC is -fno-emit-moduleinfo

Regards
Iain.