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Buildroot commit31af509b4fbumped the package from 2.40.2 to 2.41.1. This bump includes upstream commita3f1255f18which was added to version 2.41 and includes the usage of pthread_atfork() causing build errors on non-MMU platforms: libuuid/src/gen_uuid.c: In function 'uuid_generate_time_generic': libuuid/src/gen_uuid.c:629:17: error: implicit declaration of function 'pthread_atfork'; did you mean 'pthread_join'? [-Wimplicit-function-declaration] 629 | pthread_atfork(NULL, NULL, reset_uuidd_cache); The oldest build error of this kind can be found on the 2025.11.x branch with version 2.41.1: https://autobuild.buildroot.net/results/87c/87c74435be14956fd45f730269eac102e70d56da/ The issue occurs because uClibc-ng is not very consistent with its pthread_atfork() definition: it doesn't provide a prototype for it on !MMU platforms (causing the build failure), but it does provide a stub implementation (causing the configure script to believe pthread_atfork is available). This issue was reported to upstream uClibc-ng at https://mailman.openadk.org/mailman3/hyperkitty/list/devel@uclibc-ng.org/thread/WEA7IQC3YAWTSFDHCLYRQJZTC4IUIY7J/. A backport of this patch to the LTS branches should be considered, but probably not 2025.02.x as it uses version 2.40.x. Fixes: https://autobuild.buildroot.org/results/a21e81e64eccc866b575a4f3b1376c50f2ffd837/ Signed-off-by: Bernd Kuhls <bernd@kuhls.net> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> (cherry picked from commitd42fa91227) Signed-off-by: Raphaël Mélotte <raphael.melotte@mind.be>
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 https://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 OFTC IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches