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Date: Thu, 26 Feb 2009 15:42:43 -0500
From: David Schultz <das@FreeBSD.ORG>
To: Ed Schouten <ed@80386.nl>
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Cc: hackers@FreeBSD.ORG
Subject: Re: Renaming all symbols in libmp(3)
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On Thu, Feb 26, 2009, Ed Schouten wrote:
> One of the reasons why we can't compile the base system yet, is because
> some applications in the base system (keyserv, newkey, chkey, libtelnet)
> won't compile, because a library they depend (libmp)on has a function
> called pow(). By default, LLVM has a built-in prototype of pow(),
> similar to GCC. Unlike GCC, LLVM raises a compiler error by default. The
> manual page also mentions this issue.

I think most apps that used to use libmp have transitioned to
libgmp, so I don't have much of an opinion on this change...

However, if the compiler as a builtin for the math.h-style pow()
function, and the builtin causes it to choke even when math.h
isn't #included, that's a bug in the compiler. The people who are
proposing that we make the base system LLVM-compatible should be
more forceful in insisting that LLVM be fixed. ;-) What do the LLVM
folks propose to do about all the (perfectly legal) programs out
there that have a variable called 'exp'?