[Tutorial][Binaries] gdc for android

[Alex Rønne Petersen]

On 02/05/2012 11:04 PM, Johannes Pfau wrote:
> Am Sun, 5 Feb 2012 18:04:12 +0100
> schrieb Johannes Pfau<nospam at example.com>:
>
>> I will probably need some more time to get this working...
>>
>
> I have some good news:
> http://www.mediafire.com/?107we120sh3xx
>
> I fixed that problem and then the whole build worked fine. I'll post
> build instructions soon, but the binaries are ready. I only did a
> simple gdc -c test.d to check the compiler, but it seems to work.
>
> Linking against druntime fails, as it uses functions which are not
> available on Android (backtrace, signal stuff).
>
> I also built a simple hello world on linux (printf, no runtime) and ran
> it on my android phone, and it worked!
>
> In case you haven't used GDC without runtime before, a short
> introduction:
>
> * use gdc -nophoboslib to make gdc not link against phobos (and afaik,
>    druntime)
> * theres also -nostdlib in case you need it
> * complex code may require -fno-section-anchors because of bug #120
> * You'll get an error about a missing _Dmodule_ref symbol. That symbol
>    is used by module constructors and not generated by gdc if
>    -nophoboslib was passed. As long as you don't run the module
>    constructors, you can add a fake _Dmodule_ref in a .c file:
>
> ------------
> void* _Dmodule_ref;
> ------------
>
> * The compiler defines version(Android)
>
> Here's my hello world:
> ------------
> version(Android)
> {
>      pragma(msg, "Hello Android!");
> }
>
> extern(C)
> {
>      int printf(in char* format, ...);
> }
>
> extern(C) void main()
> {
>      printf("Hello, %s!\n".ptr, "Android".ptr);
> }
> ------------
>
> compile the _Dmodule_ref into hack.o, then use
> gdc -nophoboslib hello.d hack.o

Can we standardize that Android version identifier? Would be good to 
have it on dlang.org/version.html.

-- 
- Alex