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Instead of having a bool option for enabling the LZ4HC compression, change the Kconfig definition to a choice, which also adds more flexibility in the future (e.g. for enabling ZSTD compression). The name of the old option was preserved so defconfigs using it won't be affected. Also both for LZMA and LZ4HC, it's now possible to define compression level. Previously it defaulted to 9, which generates images larger than squashfs with comparable settings (which uses level 12 by default). For LZ4HC the default if unset would be still 9. Use a separate config option for LZMA and LZ4HC compression level, because their ranges and meaning are different. Signed-off-by: Jan Čermák <sairon@sairon.cz> Signed-off-by: Arnout Vandecappelle <arnout@mind.be>
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at http://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on OFTC IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches