OK, new question! How do I ask PETSc to build FFTW via the Firedrake install script? ________________________________ From: firedrake-bounces@imperial.ac.uk <firedrake-bounces@imperial.ac.uk> on behalf of Cotter, Colin J <colin.cotter@imperial.ac.uk> Sent: 24 May 2020 17:38 To: firedrake <firedrake@imperial.ac.uk> Subject: Re: [firedrake] Firedrake compatible C compiling Ah it turns out that I can ask PETSc to do it. On 24 May 2020, at 17:10, Cotter, Colin J <colin.cotter@imperial.ac.uk> wrote: Hi folks, I need to build a Firedrake-compatible FFTW. Where can I find all the correct C compiler libraries and mpich etc? all the best --cjc Professor Colin Cotter (he/him) Department of Mathematics 755, Huxley Building Imperial College London South Kensington Campus United Kingdom of Great Britain and Northern Ireland +44 2075943468