On Wed, 26 Mar 2025, Sad Clouds wrote: > $ ./configure > checking build system type... sparc-sun-solaris2.11 Hello, what kind of sparc cpu is this? The config.guess that comes with GMP usually replaces "sparc" with things like "ultrasparct3" or "sparcv9", and configure knows to try 64 bits for those. -- Marc Glisse