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Using 'yes "" | make oldconfig' to regenerate a .config file from an existing defconfig does not work reliably in all cases. Specifically, it does not work well with tristate choice entries. The correct way to do it is to use 'make olddefconfig', but this target is not supported in projects that use an old version of kconfig. As most projects do not use tristate entries, there is no need for them to upgrade. 'oldnoconfig' is an alias for 'olddefconfig', but it also is the only name for this target between Linux versions 2.6.36 and 3.6. Check which targets are supported by the current project, and use the appropriate method to regenerate the .config file. Signed-off-by: Romain Izard <romain.izard.pro@gmail.com> [yann.morin.1998@free.fr: use a shell construct instead of makefile code] Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr> Cc: Arnout Vandecappelle <arnout@mind.be> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> [Thomas: fix minor typos.] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.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