On Mon, Feb 6, 2012 at 1:40 AM, Johannes Pfau <nos...@example.com> wrote: > Am Mon, 6 Feb 2012 03:07:31 +0200 > schrieb Manu <turkey...@gmail.com>: > >> On 6 February 2012 02:25, Manu <turkey...@gmail.com> wrote: >> >> > On 6 February 2012 00:04, Johannes Pfau <nos...@example.com> wrote: >> > >> >> Am Sun, 5 Feb 2012 18:04:12 +0100 >> >> schrieb Johannes Pfau <nos...@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 >> >> >> > >> > Amazing! You sir, are a genius! >> > I'm gonna have to have some fun with that after work tomorrow :) >> > >> > I reckon this binary distro should be put on d-p-l somewhere >> > obvious. >> > >> >> I just tried with -mfpu=neon, which should allow GCC to generate neon >> opcodes for the simd stuff, but it didn't seem to want to do that. In >> fact it generates really horrible code where it CALLS an intrinsic >> for each float in the vector... >> Any idea why this wouldn't work out of the box? > > The android toolchain configures gcc with: += --with-float=soft > --with-fpu=vfp --with-arch=armv5te > > I could try to build an optimized build, but then you'll have to tell > me what processor you're using. Cortex A8? > > I'm not sure if you can override that at runtime. You could probably > try: > -mfloat-abi=hard -mcpu=cortex-a8 -march=armv7-a -mfpu=neon
I'm pretty sure you have to rebuild the entire toolchain to switch from softfloat to hardfloat.
