(I'm sending this to both bug-guile and bug-hurd; could you please keep debian-hurd CC'ed ?) Hi ! I'm trying to run Guile 2.0.5 on Debian GNU/Hurd in a qemu virtual machine. I installed Guile from the tarball, with no configure options at all. I'm getting the following error: $ ./meta/guile GNU Guile 2.0.5 Copyright (C) 1995-2012 Free Software Foundation, Inc. Guile comes with ABSOLUTELY NO WARRANTY; for details type `,show w'. This program is free software, and you are welcome to redistribute it under certain conditions; type `,show c' for details. Enter `,help' for help. scheme@(guile-user)> (+ 1 2) Illegal instruction The GDB output is attached. When compiling with --without-threads, I can run (+ 1 2) in the interpreter successfully. Running ./check-guile gives me the following result: Totals for this test run: passes: 34286 failures: 2 unexpected passes: 0 expected failures: 30 unresolved test cases: 575 untested test cases: 1 unsupported test cases: 15 errors: 0 So I think it's probably usable this way. WBR, Cyril Roelandt.