[cfe-dev] Passing a triple to libclang

[Eric Christopher]

On Wed, Jun 4, 2014 at 12:57 PM, Eli Bendersky <eliben at google.com> wrote:
> Hello,
>
> Currently libclang will refuse to parse code that contains target-specific
> builtin calls, and as far as I can tell it does not support passing in a
> triple (I get a "...libclang: crash detected during parsing").
>
> Has anyone else encountered this / filed a bug? It seems that
> http://lists.cs.uiuc.edu/pipermail/cfe-commits/Week-of-Mon-20131104/092632.html
> is related but I didn't find any resolution from it.
>

The original idea is that clang should be functional without needing
to link in the targets as its own library. However, given the asm
parsing desires for msvc I don't know that's completely valid anymore.
Tt could be possible to avoid doing the checking.

That said, it might be worth splitting libclang into two parts - the
codegen/"need to parse assembly" part and the "I just want to parse
C/C++ source and skip over validation on assembly part". If we do that
split we could have a front end bit that's more useful for people
doing tooling and if you really want "gimme all of clang as a library"
we can have the "everything linked in" part. Effectively we'd be
making the larger library as a "gimme clang as a library without the
driver" which may be what people want.

-eric