[kronosnet/kronosnet] 026745: [build] Add annobin build/check support

Branch: refs/heads/stack-clash-protection Home: https://github.com/kronosnet/kronosnet Commit: 0267451ba1e81e9520ea24e43e5ef39435db54b0 https://github.com/kronosnet/kronosnet/commit/0267451ba1e81e9520ea24e43e5ef… Author: Christine Caulfield <ccaulfie(a)redhat.com> Date: 2021-09-16 (Thu, 16 Sep 2021) Changed paths: M build-aux/check.mk M configure.ac M libknet/Makefile.am M libknet/tests/Makefile.am M libnozzle/Makefile.am M libnozzle/tests/Makefile.am Log Message: ----------- [build] Add annobin build/check support the annobin check is enabled only if all compiler flags, linker flags and annocheck binary are available. the build will use as many of the hardening options required to pass the annocheck regardless. the check is performed / enabled only with gcc. clang currently suffers from some limitations to automatically detect the annobin plugin, that would increase drastacally the complexity of the build system unnecessarely. implementation based on: - https://bugzilla.redhat.com/show_bug.cgi?id=1961686 - https://developers.redhat.com/blog/2019/02/04/annocheck-examining-the-conte… - https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/ht… Original idea by Christine Caulfield <ccaulfie(a)redhat.com> CentOS Stream CI insists on this but it's generally a 'good thing' Signed-off-by: Fabio M. Di Nitto <fdinitto(a)redhat.com>