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Since the bump of autoconf to version 2.73 in Buildroot commit, the build of target bind fails if the host compiler is too old, because the bind build system tries to use -std=gnu23 when building host tools which isn't supported by older GCC releases, causing: checking whether the C compiler works... no configure: error: in '/home/thomas/autobuild/instance-2/output-1/build/bind-9.20.26': configure: error: C compiler cannot create executables See 'config.log' for more details make: *** [package/pkg-generic.mk:263: /home/thomas/autobuild/instance-2/output-1/build/bind-9.20.26/.stamp_configured] Error 77 To fix this, we backport a number of patches from autoconf-archive, to fix the m4/ax_prog_cc_for_build.m4 macro file, so that it works with autoconf 2.73. OpenEmbedded has a similar fix: https://git.openembedded.org/openembedded-core/tree/meta/recipes-connectivity/bind/bind/0001-m4-Backport-ax_prog_cc_for_build.m4-macros.patch but did not backport as carefully the autoconf-archive commits (and their commit message reverts to sudo). The patches can be dropped when we update to a newer version of bind that itself has an updated copy of the m4/ax_prog_cc_for_build.m4 file. Fixes: https://autobuild.buildroot.net/results/13e07755101b7cae2f84eef173ef752f92842e71/ Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> Signed-off-by: Julien Olivain <ju.o@free.fr>
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