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Re: [PATCH 0/7] LLDB import to src

On Thu, Apr 02, 2020 at 02:21:53AM +0200, Kamil Rytarowski wrote:
> On 02.04.2020 01:47, Joerg Sonnenberger wrote:
> > On Sat, Mar 28, 2020 at 02:52:03PM +0100, Michał Górny wrote:
> >> This patch series imports LLDB as of the commit matching our LLVM
> >> and Clang (as necessary for API compatibility), backports important
> >> patches improving NetBSD support and adds Makefiles to build it.
> > I'm in the process of upgrading LLVM, but there are a couple of
> > regressions that need to get resolved first. I'll take a look soonish to
> > integrate this, but I don't plan to merge it before that.
> As we upgrade LLVM, we need to upgrade LLDB and drop local cherry-picked
> patches.

Sure, the intention of this part was primary "please focus on keeping
the main line code working".

> On 02.04.2020 01:47, Joerg Sonnenberger wrote:
> >> The build is currently purely using static libraries.  However, I think
> >> we should switch to building and using long-term as upstream
> >> expects us to.  This will require building LLVM and Clang with -fPIC,
> >> and it will then probably make sense to build
> >> and as well.
> > I don't see any reason why building LLDB dynamically would really
> > improve things given that we don't do Python scripting anyway. Building
> > clang with -fPIC is certainly a big no-go.
> LLDB uses path relative logic internally.
> Python scripting is not something that we want, if anything we might
> want to use Lua scripting but it is not a priority in base.
> But as there is planned an LLVM upgrade, we shall upstream something
> alternative to the path relative logic and avoid local
> patches. Michal, could you have a look into this?

Yes, a compile time option for just hard-coding that path would be much
preferable. Alternatively falling back to the main binary if the shared
library can not be found. But that still feels quite fragile to me.


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