Some files in the build tools use file flags not supported on non-UFS/ZFS file systems, such as NFS, and a buildworld fails at the bootstrap stage due to them like the following. This patch should fix this problem.
- host-symlinks ---
Linking host tools into /usr/obj/usr/src/amd64.amd64/tmp/legacy/bin
cp: chflags: /usr/obj/usr/src/amd64.amd64/tmp/legacy/bin/bzip2: Operation not supported
- [host-symlinks] Error code 1
- _bootstrap-tools-link-lex ---
cp: chflags: /usr/obj/usr/src/amd64.amd64/tmp/legacy/bin/lex: Operation not supported
- [_bootstrap-tools-link-lex] Error code 1