Hi, I have a problem compiling GMSH. I installed GSL-1.3 in a non-standard location and then set configure option --with-gsl-prefix to the right location but it still complains about not finding GSL. It seems it ignores --with-gsl-prefix. checking for main in -lgslcblas... no checking for main in -lgsl... no Does anyone know what I am doing wrong? Billy.