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btrfs will happily use an existing destination file if it already exists, increasing its size if needed. Hoever, it will never decrease the size, even if the requested size is smaller than the existing file. So, remove any previously existing destination file before generating the new filesystem. Note: the original submission by Robert did that, but as this case was not obvious, the removal was dropped by a refactoring when the patch was initially applied. Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Cc: Robert J. Heywood <robert.heywood@codethink.co.uk> Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com> [Thomas: use $@ instead of $(@), use $(RM) instead of rm.] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
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 Freenode IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches