|  | fs_ss = ss.source_set() | 
|  | fs_ss.add(files( | 
|  | '9p-local.c', | 
|  | '9p-posix-acl.c', | 
|  | '9p-proxy.c', | 
|  | '9p-synth.c', | 
|  | '9p-xattr-user.c', | 
|  | '9p-xattr.c', | 
|  | '9p.c', | 
|  | 'codir.c', | 
|  | 'cofile.c', | 
|  | 'cofs.c', | 
|  | 'coth.c', | 
|  | 'coxattr.c', | 
|  | )) | 
|  | if host_os == 'darwin' | 
|  | fs_ss.add(files('9p-util-darwin.c')) | 
|  | elif host_os == 'linux' | 
|  | fs_ss.add(files('9p-util-linux.c')) | 
|  | endif | 
|  | fs_ss.add(when: 'CONFIG_XEN_BUS', if_true: files('xen-9p-backend.c')) | 
|  | system_ss.add_all(when: 'CONFIG_FSDEV_9P', if_true: fs_ss) | 
|  |  | 
|  | specific_ss.add(when: 'CONFIG_VIRTIO_9P', if_true: files('virtio-9p-device.c')) |