Hi, I try to compile Gmsh-2.2.6 on CentOS5. I've already install gsl1.9 and fltk-1.3.x-r6623. When I execute ./configure to compile Gmsh, the foolowing error appears: */checking size of size_t... configure: error: cannot compute sizeof (size_t) See `config.log' for more details. /*Thank you for your help. Best, Nicolas