| config BR2_TARGET_ROOTFS_SQUASHFS |
| bool "squashfs root filesystem" |
| help |
| Build a squashfs root filesystem |
| |
| if BR2_TARGET_ROOTFS_SQUASHFS |
| |
| choice |
| prompt "block size" |
| default BR2_TARGET_ROOTFS_SQUASHFS_BS_128K |
| help |
| Data block size. Bigger values can improve |
| compression ratio. |
| |
| If unsure, leave at 128k (default). |
| |
| config BR2_TARGET_ROOTFS_SQUASHFS_BS_4K |
| bool "4k" |
| |
| config BR2_TARGET_ROOTFS_SQUASHFS_BS_8K |
| bool "8k" |
| |
| config BR2_TARGET_ROOTFS_SQUASHFS_BS_16K |
| bool "16k" |
| |
| config BR2_TARGET_ROOTFS_SQUASHFS_BS_32K |
| bool "32k" |
| |
| config BR2_TARGET_ROOTFS_SQUASHFS_BS_64K |
| bool "64k" |
| |
| config BR2_TARGET_ROOTFS_SQUASHFS_BS_128K |
| bool "128k" |
| |
| config BR2_TARGET_ROOTFS_SQUASHFS_BS_256K |
| bool "256k" |
| |
| config BR2_TARGET_ROOTFS_SQUASHFS_BS_512K |
| bool "512k" |
| |
| config BR2_TARGET_ROOTFS_SQUASHFS_BS_1024K |
| bool "1024k" |
| |
| endchoice |
| |
| config BR2_TARGET_ROOTFS_SQUASHFS_BS |
| string |
| default "4K" if BR2_TARGET_ROOTFS_SQUASHFS_BS_4K |
| default "8K" if BR2_TARGET_ROOTFS_SQUASHFS_BS_8K |
| default "16K" if BR2_TARGET_ROOTFS_SQUASHFS_BS_16K |
| default "32K" if BR2_TARGET_ROOTFS_SQUASHFS_BS_32K |
| default "64K" if BR2_TARGET_ROOTFS_SQUASHFS_BS_64K |
| default "128K" if BR2_TARGET_ROOTFS_SQUASHFS_BS_128K |
| default "256K" if BR2_TARGET_ROOTFS_SQUASHFS_BS_256K |
| default "512K" if BR2_TARGET_ROOTFS_SQUASHFS_BS_512K |
| default "1024K" if BR2_TARGET_ROOTFS_SQUASHFS_BS_1024K |
| |
| config BR2_TARGET_ROOTFS_SQUASHFS_PAD |
| bool "pad to a 4K boundary" |
| default y # legacy was always ON |
| help |
| Say 'y' here (the default) to pad the the filesystem image |
| to a 4K boundary. Say 'n' to disable padding. |
| |
| choice |
| prompt "Compression algorithm" |
| default BR2_TARGET_ROOTFS_SQUASHFS4_GZIP |
| help |
| Select the squashfs compression algorithm to use when |
| generating the filesystem. |
| |
| config BR2_TARGET_ROOTFS_SQUASHFS4_GZIP |
| bool "gzip" |
| |
| config BR2_TARGET_ROOTFS_SQUASHFS4_LZ4 |
| bool "lz4" |
| |
| config BR2_TARGET_ROOTFS_SQUASHFS4_LZMA |
| bool "lzma" |
| |
| config BR2_TARGET_ROOTFS_SQUASHFS4_LZO |
| bool "lzo" |
| |
| config BR2_TARGET_ROOTFS_SQUASHFS4_XZ |
| bool "xz" |
| |
| config BR2_TARGET_ROOTFS_SQUASHFS4_ZSTD |
| bool "zstd" |
| |
| endchoice |
| |
| config BR2_TARGET_ROOTFS_SQUASHFS_EXTREME_COMP |
| bool "extreme compression when available" |
| default y if BR2_TARGET_ROOTFS_SQUASHFS4_LZ4 # legacy |
| help |
| Use options to increase compression ration as much as |
| possible, like using architecture-specific options, at |
| the cost of time when assembling the filesystem image. |
| |
| For example: |
| - with gzip and lzo, use -Xcompression-level 9 |
| - with xz use arch-specific bcj (branch-call-jump) filters |
| - with zstd use -Xcompression-level 22 |
| - and more |
| |
| config BR2_TARGET_ROOTFS_SQUASHFS_COMP_OPTS |
| string |
| default "-Xcompression-level 9" if BR2_TARGET_ROOTFS_SQUASHFS4_GZIP |
| default "-Xcompression-level 9" if BR2_TARGET_ROOTFS_SQUASHFS4_LZO |
| default "-Xhc" if BR2_TARGET_ROOTFS_SQUASHFS4_LZ4 |
| default "-Xbcj arm,armthumb" if BR2_TARGET_ROOTFS_SQUASHFS4_XZ && (BR2_arm || BR_aarch64) |
| default "-Xbcj powerpc" if BR2_TARGET_ROOTFS_SQUASHFS4_XZ && (BR2_powerpc || BR2_powerpc64) |
| default "-Xbcj sparc" if BR2_TARGET_ROOTFS_SQUASHFS4_XZ && (BR2_sparc || BR2_sparc64) |
| default "-Xbcj x86" if BR2_TARGET_ROOTFS_SQUASHFS4_XZ && (BR2_i386 || BR2_x86_64) |
| default "-Xcompression-level 22" if BR2_TARGET_ROOTFS_SQUASHFS4_ZSTD |
| depends on BR2_TARGET_ROOTFS_SQUASHFS_EXTREME_COMP |
| |
| endif |
