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Building uclibc 1.0.37 for SuperH architecture with linux-headers 5.10.7 fails at libpthread level due to missing time-related data structures, usually defined by the kernel. Make uclibc correctly define those types. A previous patch in buildroot [1] fixed the symptom by tampering with linux-headers inclusions, but analysis [2] done in collaboration with Linux folks concluded that the issue lied in (voluntary) include guard "preemption" in uclibc kernel_types.h. However, kernel_types.h was not up to date with relevant 64-bit time data structures, so defining those here was needed. The present uclibc patch was mailed to uclibc-ng mailing list and got a positive response; I am not able to give a link to the discussion, as it has not appeared yet [3] (perhaps I'm not looking at the right place ?) So until the patch is merged upstream and we bump uclibc version, keep our patch here. [1] https://git.buildroot.net/buildroot/commit/?id=742f37de8d0e3797698411dfc6a63bd7e98aafe2 [2] https://patchwork.kernel.org/project/linux-sh/patch/20210123165652.10884-1-geoffrey.legourrierec@gmail.com/ [3] https://mailman.uclibc-ng.org/pipermail/devel/2021-January/thread.html Signed-off-by: Geoffrey Le Gourriérec <geoffrey.legourrierec@gmail.com> Tested-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> Signed-off-by: Peter Korsgaard <peter@korsgaard.com> |
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| utils | ||
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| README | ||
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