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While building host-localedef from glibc 2.38 sources, it uses the features.h header from its sources that define _ISOC2X_SOURCE 1 as soon as _GNU_SOURCE is defined. _ISOC2X_SOURCE enable __GLIBC_USE_ISOC2X 1 that enable the header redirection to use __isoc23_* functions introduced in glibc 2.38 [1]. If an older version is installed on the host, those functions doesn't exist and break the build. Add a local patch to keep _ISOC2X_SOURCE and __GLIBC_USE_ISOC2X disabled. Fixes: host-localedef-2.38-13-g92201f16cbcfd9eafe314ef6654be2ea7ba25675/build/locale/ld-ctype.o: in function `ctype_read': ld-ctype.c:(.text+0x6cef): undefined reference to `__isoc23_strtoul' (glibc 2.31 installed on the host) [1] https://sourceware.org/git/?p=glibc.git;a=commit;h=64924422a99690d147a166b4de3103f3bf3eaf6c Signed-off-by: Romain Naour <romain.naour@gmail.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 OFTC IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches