Date: Sun, 7 Jun 2009 07:25:55 +0200 From: Kai Wang <kaiwang27@gmail.com> To: Tim Kientzle <kientzle@freebsd.org> Cc: Ed Schouten <ed@80386.nl>, hackers@freebsd.org, current@freebsd.org, Erik Cederstrand <erik@cederstrand.dk> Subject: Re: Clang: now available from a SVN server near you! Message-ID: <20090607052555.GA2154@viskning> In-Reply-To: <4A27F105.4040109@freebsd.org> References: <20090604093831.GE48776@hoeg.nl> <31BD4D08-6558-46FF-9B93-CF8249AAC461@cederstrand.dk> <4A27F105.4040109@freebsd.org>
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On Thu, Jun 04, 2009 at 09:06:29AM -0700, Tim Kientzle wrote: > Erik Cederstrand wrote: > > > > LLVM provides a linker (http://llvm.org/cmds/llvm-ld.html) but "it > > doesn't interact correctly with conventional nm/ar/etc" > > (http://lists.cs.uiuc.edu/pipermail/cfe-dev/2009-June/005296.html). > > In what way does it not interact correctly? llvm-ar manual page: http://llvm.org/cmds/llvm-ar.html I think the major difference is that llvm-ar is aimed for bitcode (.bc) files, same as other llvm-xxx tools. (for example, llvm-ld) Other that that, llvm-ar uses a different symbol table, a different compression solution. (llvm-ar compresses each member separately, not the entire archive, this is probably better wrt random access of members?). llvm-ar also has a handy -R option which we should probably add to our ar(1). And from what I read in the wiki, it looks like llvm-ld can be used as long as --emit-llvm is specified when compiling? -Kai
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