Re: [Haskell-beginners] cmath Install troubles

On Wed, Apr 18, 2012 at 21:39, Tom Murphy wrote:

On 4/18/12, Brandon Allbery wrote:

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On Wed, Apr 18, 2012 at 16:18, Tom Murphy wrote:

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This makes it seem like cabal doesn't have access to _any_ math.h file, but if this were the case, wouldn't I get many more undefined-function errors than I do?

Unless you are using an older ghc with -fvia-C, [...] I have 7.0.4.

7.0.4 has -fasm by default, but you can force -fvia-C still. With -fasm, the include files are not used afaik; since direct assembly code is created and not C code, a C include file is not useful.

Hmm, that's true... I don't really understand how .hsc files are compiled, but isn't the "#include " in cmath done in the very standard FFI style?

If warnings are on, I think that elicits a "this is not used any more" warning with -fasm.

I note that OS X doesn't have a gamma(). There are lgamma() and tgamma()

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and variations thereon. (and no related macros in , confirming that it is not related.)

What do you mean by OS X not having them? On my system (10.6), gamma()

I'm on 10.7, and I have no gamma(). I just checked the 10.6 SDK includes; it has extern double gamma ( double ); /* Legacy API: please use C99 tgamma() instead. */ so apparently it was deprecated and is now removed. -- brandon s allbery allbery.b@gmail.com wandering unix systems administrator (available) (412) 475-9364 vm/sms