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HOST_DIR is defined twice: once to its default value before .config is included, and once more to BR2_HOST_DIR after .config is included. However, the rule that defines the mkdir for HOST_DIR comes between these two, so it will always use the default definition. Therefore, if a non-default BR2_HOST_DIR is used, there will be no rule to create that directory, while the dirs target depends on it. This happens to work at the moment, because in the dirs target, $(STAGING_DIR) comes before $(HOST_DIR), so $(HOST_DIR) will be created implicitly. However, this will fail in top-level parallel builds where both will be created in parallel. Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> 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