Chosing the C and C++ compilers

[Akim Demaille]

Le 6 nov. 08 à 15:20, Anders F Björklund a écrit :

> Akim Demaille wrote:
>
>> Really, I just wish I had a simple means (= not by having to  
>> specify it on each port command line) to specify CC and CXX.  Or  
>> else, I would prefer that the hard coded values be fully qualified  
>> (/usr/bin/i686-apple-darwin9-gcc-4.0.1) instead of short (/usr/bin/ 
>> gcc-4.0).  In that case I have nothing special to do to use distcc  
>> with macports.
>
> /usr/bin/gcc-4.0 works for more than one arch, though. If you do a  
> fat build (with -arch ppc -arch i386) then it will call both of the  
> arch-specific compilers in turn. Changing compiler from gcc-4.0 to  
> i686-apple-darwin9-gcc-4.0.1 would turn it into a single-arch build  
> instead.

Ah, OK, didn't think about that, thanks!  Then in that case I suppose  
that there are means to tell /usr/bin/gcc-4.0 what arch I'm aiming for  
(686, ppc, or universal).  I suppose via something like -march.  In  
which case, it's even better than using the fully qualified compiler: / 
usr/bin/gcc-4.0 with the appropriate flags allows to build for the  
three cases.

But apparently in the default mode it compiles for the build machine,  
which is not what I need.  So I guess the question is rather: do I  
have a means to tell /usr/bin/gcc-4.0 via macports.conf the set of  
archs I want to compile for?