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

[Simon Marlow]

On 02 September 2004 03:46, Sean Seefried wrote:

>>> 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.

Does adding -P to the gcc command line help?

Cheers,
	Simon