llvm-dev Digest, Vol 183, Issue 75

Message: 2
Date: Tue,
Message: 3
Date: Tue, 24 Sep 2019 19:08:49 +0200
From: Fabiano Sidler via llvm-dev <llvm-dev@lists.llvm.org>
To: llvm-dev@lists.llvm.org
Subject: Re: [llvm-dev] Building LLVM with LLVM with no dependence on
Message-ID: 20190924170849.haiudl4vsibcppho@fria
Content-Type: text/plain; charset=utf-8

Hello? Anyone here with step-by-step instructions for getting a GCC-free
(and possibly glibc-free) LLVM on Ubuntu?


Glibc free on a glibc host is difficult. I periodically try this but am yet to be totally successful. You can look at Alpine Linux for a working example where everything is built against musl.

The hazard I am blocked on is that clang uses third party code. Readline, zlib, probably others I’ve forgotten. Setting the cmake flags to build without them didn’t work, so I think one has to build these libraries with the musl targeting toolchain and then build clang against them.

Life is simpler if libcxx/cxxabi/unwind are all combined into a single archive. The cmake options to do that used to be broken, maybe that works in the new monorepo.

I’d be interested to hear if you succeed.