| 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. | |
| Select "none" to disable compression. | |
| 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" | |
| config BR2_TARGET_ROOTFS_SQUASHFS4_NONE | |
| bool "none" | |
| endchoice | |
| config BR2_TARGET_ROOTFS_SQUASHFS_EXTREME_COMP | |
| bool "extreme compression when available" | |
| default y if BR2_TARGET_ROOTFS_SQUASHFS4_LZ4 # legacy | |
| depends on !BR2_TARGET_ROOTFS_SQUASHFS4_NONE | |
| 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 || BR2_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 |