buildroot/fs/squashfs/Config.in

config BR2_TARGET_ROOTFS_SQUASHFS
	bool "squashfs root filesystem"
	help
	  Build a squashfs root filesystem

if BR2_TARGET_ROOTFS_SQUASHFS
choice
	prompt "SquashFS version"
	default BR2_TARGET_ROOTFS_SQUASHFS4
	help
	  Select the Squash filesystem version to use to generate the
	  root filesystem.

config BR2_TARGET_ROOTFS_SQUASHFS4
       bool "4.x"

config BR2_TARGET_ROOTFS_SQUASHFS3
       depends on BR2_DEPRECATED
       bool "3.x"

endchoice
endif