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GCC 15 defaults to C23, which removes support for K&R-style unprototyped function declarations. This causes build failures with strict modern C libraries. Add proper function prototypes for getopt, getopt_long, getopt_long_only, getenv, and _getopt_internal to comply with C23 requirements. Fixes build with musl libc and GCC 15. Upstream: https://github.com/Project-OSS-Revival/enca/pull/97 Fixes: https://autobuild.buildroot.net/results/982831f380ba21a28d4a9a0cb100d055771898e2/ Signed-off-by: Shubham Chakraborty <chakrabortyshubham66@gmail.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.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 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