[nightly] HEAD onpowerpc-apple-darwin (chil15.orchestra.cse.unsw.EDU.AU)

[Sean Seefried]

>> But I think I have found the problem.
>>
>> % gcc3 -E -traditional Apply.cmm
>>
>> gives:
>>
>> gcc3: Apply.cmm: linker input file unused because linking not done
>>
>> At first I thought the fact that gcc3 thinks it's an Objective C
>> program. Close. In fact, it thinks it's an Objective C++ program.
>> Adding the flag '-x c' to the command line makes this problem go away.
>> We'll see how the build goes tomorrow.
>
> I'm confused.  GHC already passes -x c to gcc when doing preprocessing.
>
> Why do you need to set -pgmP?  Doesn't configure find the right one?
>
> Have you checked the output from -v?
>

Okay, I didn't really understand how the .cmm files were being 
compiled.  The '-x c' flag was being passed already.  It turns out that 
the required fix is -pgmc "gcc3" which forces the use of gcc 3.1 rather 
than gcc 3.3.  I think the problem is probably due to what Wolfgang 
said: gcc 3.3 has a funny way of putting "#pragma" definitions in 
preprocessed output.

Sean