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Currently, bridge-utils wants to grap the headers from the linux-headers package, so we point it directly there, as has been the case since we first added bridge-utils in 2003 (c8eea31d3f), and then further refined in 2005 (178a317d26) which is the first moment we pointed to the linux- headers directory. However, ther are two things wrong with that. First, the headers are not directly in $(LINUX_HEADERS_DIR). Instead, they are in a sub-directory thereof. So, we could not have found them the way we are doing now. Second, this definitely does not work when using an external toolchain, because there is not linux-headers package enabled then. Yet, against all odds, bridge-utils has valiantly deflected all rocks thrown its way, day-in day-out building without any issue in every autobuilders it's been confronted with. Good boy, good boy. :-) And indeed, it turns out that the required headers are easily found from within the sysroot of the toolchain. Wonders! :-) But there's still a gotcha: the default search path is still a hard coded path pointing to the installed kernel source tree on the host. So, we still have to pass this option, but we can simply point to the sysroot. [Peter: point to sysroot instead of non-existing directory] Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Signed-off-by: Peter Korsgaard <peter@korsgaard.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