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When Buildroot is released, it knows up to a certain kernel header version, and no later. However, it is possible that an external toolchain will be used, that uses headers newer than the latest version Buildroot knows about. This may also happen when testing a development, an rc-class, or a newly released kernel, either in an external toolchain, or with an internal toolchain with custom headers (same-as-kernel, custom version, custom git, custom tarball). In the current state, Buildroot would refuse to use such toolchains, because the test is for strict equality. We'd like to make that situation possible, but we also want the user not to be lenient at the same time, and select the right headers version when it is known. So, we add a new Kconfig blind option that the latest kernel headers version selects. This options is then used to decide whether we do a strict or loose check of the kernel headers. Suggested-by: Aaron Sierra <asierra@xes-inc.com> Signed-off-by: Vincent Fazio <vfazio@xes-inc.com> [yann.morin.1998@free.fr: - only do a loose check for the latest version - expand commit log ] Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr> Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com> Tested-by: Vincent Fazio <vfazio@xes-inc.com> 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