[Haskell-beginners] cmath Install troubles

[Tom Murphy]

I've got some free time again so I'm returning to this problem.


2 important facts:
- A test C program, using one of the "undefined" functions (isnan)
compiles with GCC and runs
- I went in by hand and temporarily replaced each version of math.h on
my computer with a version that has the necessary functions defined.
Cabal-install still failed with the same error.

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?


Thanks for the help,
Tom

On 1/20/12, Brandon Allbery <allbery.b at gmail.com> wrote:
> On Fri, Jan 20, 2012 at 15:26, Tom Murphy <amindfv at gmail.com> wrote:
>
>> On 1/19/12, Brandon Allbery <allbery.b at gmail.com> wrote:
>> > On Thu, Jan 19, 2012 at 16:37, Antoine Latter <aslatter at gmail.com>
>> wrote:
>> >> On Thu, Jan 19, 2012 at 3:24 PM, Tom Murphy <amindfv at gmail.com> wrote:
>> >> > Is it possible that I have a version of math.h which doesn't have
>> >> > these definitions ("gamma," "finite," "isinf," etc.) in it?
>> >>
>> >> That's a good guess based on the error messages - or math.h isn't in
>> >> whatever paths we're looking in.
>>
>> If math.h wasn't in the paths at all, wouldn't I get an error about
>> _every_ function being undefined?
>>
>
> The problem isn't math.h; these are link errors, so it's
> /usr/lib/libm.dylib that is somehow wrong.  I can't help with this too much
> as I'm on Lion so it's a symlink to libSystem.dylib (and if that's messed
> up, you don't even *boot* much less compile stuff).
>
> --
> brandon s allbery                                      allbery.b at gmail.com
> wandering unix systems administrator (available)     (412) 475-9364 vm/sms
>