What: A build breaks, mentioning make: execvp: Permission denied. (busybox was trying to build)
Why: /tmp is mounted noexec. make is trying to launch a script, (called gen_build_files.sh) but the script resides on /tmp thus the error.
make: execvp: /tmp/genkernel/8529.32051.23452.9923/busybox-1.20.2/scripts/gen_build_files.sh: Permission deniedMy fix: Temporarily set TMPDIR in genkernel.conf to another mount. A fix for other instances of this error could be fixed by setting PORTAGE_TMPDIR in make.conf.
*make: *** [gen_build_files] Error 127
*make: *** Waiting for unfinished jobs....
*/bin/sh: scripts/basic/fixdep: Permission denied
*make: *** [scripts/basic/fixdep] Error 1
*make: *** [scripts_basic] Error 2