+fsdev_ss = ss.source_set()
+fsdev_ss.add(files('qemu-fsdev-opts.c', 'qemu-fsdev-throttle.c'))
+fsdev_ss.add(when: 'CONFIG_ALL', if_true: files('qemu-fsdev-dummy.c'))
+fsdev_ss.add(when: ['CONFIG_FSDEV_9P'], if_true: files(
+ '9p-iov-marshal.c',
+ '9p-marshal.c',
+ 'qemu-fsdev.c',
+), if_false: files('qemu-fsdev-dummy.c'))
+softmmu_ss.add_all(when: 'CONFIG_LINUX', if_true: fsdev_ss)
+
have_virtfs_proxy_helper = have_tools and libattr.found() and libcap_ng.found() and 'CONFIG_VIRTFS' in config_host
if have_virtfs_proxy_helper
executable('virtfs-proxy-helper',