Thank you for your replies and the information provided.
Maurice Lombardi wrote:
I only found in the Apple Darwin site that gcc-7 as named by Darwin is in fact a patched version of gcc-2.95.2 I downloaded gcc-7.tar.gz and tried to apply the 2.95.2 gpc patches to it. There is some fuss due to the Apple patches but all gpc patches apply successfully. So the only advice I can give is to try a compilation as indicated in the gpc doc and see what you obtain.
Looking into this further, I noticed that on Darwin (10.2) there are in fact three "gcc's" installed in /usr/bin gcc - a link to gcc3 gcc2 - based on the gcc you referred to gcc3 - based on gcc 3.1
So, I will experiment with the gcc-2.95.2 and with the patches for gcc-3.1 provided by Waldek Hebisch. Later with the GPC release announced by Frank Herkenbach.
Adriaan