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When preparing the legal-info, the source archives are copied in the legal-info/ output directory. When the archives are big, it can take quite a bit of time and unnecessarily uses disk space. When the legal-info output directory is on the same filesystem as the BR2_DL_DIR, we can easily reduce copy time and disk usage by just using hardlins instead of copying. However, the BR2_DL_DIR may be on a different filesystem, so we must fallback to copying in this case Introduce a helper script that copies a source file into a destination directory, by first attempting to hard-link, and falling back to a plain copy in case the hardlink fails. In case the destination already exists, it is forcibly removed first, to avoid clobering any existing target file (and especially any hardlink to it), since cp -f does not remove the destination file, but clobbers it. In some situations, it will be necessary that the destination file is named differently than the source, so if a third argument is specified, it is treated as the basename of the destination file. Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Cc: Luca Ceresoli <luca@lucaceresoli.net> Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> 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