CGAL users discussion list

[W Randolph Franklin <>]

I implement my geometry ideas in C++, and am interested in performance.

So, based on CGAL's experience on various C++ compilers on linux, does
any compiler stand out, in performance, features, hidden gotchas, etc?

Useful compiler performance comparisons seem remarkedly hard to find
(though someone will probably send me some excellent cites that I'd
overlooked).

My sense is that g++ and icpp are now comparable.   I've seen little
benefit from optimization above -O1 on either compiler.

An example of a gotcha:  at one time, g++ (but not gcc!) implemented the
'read' routine, intended to read a block in one operation, as a loop
calling getc, with the expected impact on i/o performance.

Thanks.

W. Randolph Franklin, Rensselaer Polytechnic Institute