[Xquartz-dev] X11 development headers

[Joachim Beckers]

Hi,

I'm having lots of problems when compiling various packages with  
macports, and they all come down to one issue: the X11 development  
headers seem to be missing.

I'm running 10.5.4 (upgraded from 10.5.2) with first Apple's X11  
installed, then later upgraded to Xquartz 2.3.1rc1. I also have Xcode  
3.1 installed (upgraded from 3.0). This should be enough for  
everything to work, right?

How can I check wether the headers are really missing, i.e. where  
should I look for them?

regards,

Joachim