llvm dev - Sep 2015 - how to link clang generated obj targeting BPF

Dear there,

I was trying to use clang to cross compile executable directly on my mac to
bpf ISA:

clang -target bpf-linux-gnu aaa.c

But I guess maybe the linker does not support BPF? (with -c clang can
generate unlinked objs)

Unexpected arch
UNREACHABLE executed at
llvm/tools/clang/lib/Driver/Tools.cpp:8113

Should I use other linkers to link clang generated BPF objs?

Thanks,
Xiaochu
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On Wed, Sep 9, 2015 at 5:10 PM, Xiaochu Liu via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
> Dear there,
>
> I was trying to use clang to cross compile executable directly on my mac to
> bpf ISA:
>
> clang -target bpf-linux-gnu aaa.c
>
> But I guess maybe the linker does not support BPF? (with -c clang can
> generate unlinked objs)
>
> Unexpected arch
> UNREACHABLE executed at
> llvm/tools/clang/lib/Driver/Tools.cpp:8113
>
> Should I use other linkers to link clang generated BPF objs?
there is no linker for BPF. It can only produce .o
so just add -c

I see. Thanks!

On Wed, Sep 9, 2015 at 5:13 PM Alexei Starovoitov <
alexei.starovoitov at gmail.com> wrote:
> On Wed, Sep 9, 2015 at 5:10 PM, Xiaochu Liu via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
> > Dear there,
> >
> > I was trying to use clang to cross compile executable directly on my
mac
> to
> > bpf ISA:
> >
> > clang -target bpf-linux-gnu aaa.c
> >
> > But I guess maybe the linker does not support BPF? (with -c clang can
> > generate unlinked objs)
> >
> > Unexpected arch
> > UNREACHABLE executed at
> > llvm/tools/clang/lib/Driver/Tools.cpp:8113
> >
> > Should I use other linkers to link clang generated BPF objs?
>
> there is no linker for BPF. It can only produce .o
> so just add -c
>
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