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Re: Clang c++ include path

From: Marius Bakke
Subject: Re: Clang c++ include path
Date: Mon, 28 Oct 2019 23:48:58 +0100
User-agent: Notmuch/0.29.1 ( Emacs/26.2 (x86_64-pc-linux-gnu)

Mark H Weaver <address@hidden> writes:

> Hi Ricardo and Mathieu,
> Ricardo Wurmus <address@hidden> writes:
>>> When running clang on a c++ program, it cannot find c++ std libraries.
>>> That's because, those libraries path are hardcoded inside g++ compiler
>>> and clang cannot find them.
>> Does this patch help?
> I'd like to request that fixes to LLVM/Clang be done on another branch
> for now, or at least that the fixed versions are given a different
> variable name.  The reason is that IceCat depends on Rust which depends
> on Clang, and there is a chain of *18* Rust compilers that must be built
> before IceCat can be built.  On my system, compiling all of those Rust
> compilers requires approximately *90 hours* of continuous compiling.
> For the sake of Guix users like myself who do not want to trust the
> build farm, it would be good for it to remain reasonably viable to build
> everything locally.

I agree.  The CI system also spends days bootstrapping the Rust compiler
chain.  Any user who tries to install IceCat during that time will have
a terrible experience.

I've been keeping "libgit2" updates in 'staging' for that reason, even
though it is below the ~300 rebuild limit.

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