* Package:    net-libs/xdp-tools-1.2.3
 * Repository: gentoo
 * Maintainer: zx2c4@gentoo.org
 * USE:        abi_x86_64 amd64 elibc_glibc kernel_linux tools userland_GNU
 * FEATURES:   network-sandbox preserve-libs sandbox userpriv usersandbox

>>> Unpacking source...
>>> Unpacking xdp-tools-1.2.3.tar.gz to /var/tmp/portage/net-libs/xdp-tools-1.2.3/work
>>> Source unpacked in /var/tmp/portage/net-libs/xdp-tools-1.2.3/work
>>> Preparing source in /var/tmp/portage/net-libs/xdp-tools-1.2.3/work/xdp-tools-1.2.3 ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/net-libs/xdp-tools-1.2.3/work/xdp-tools-1.2.3 ...
./configure --prefix=/usr --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc --localstatedir=/var/lib --libdir=/usr/lib64
Found clang binary 'clang' with version 14 (from 'clang version 14.0.3')
using emacs: GNU Emacs 28.1
libbpf support: FORCE_SYSTEM_LIBBPF is set, but no usable libbpf found on system
error: config.gEiBFK/libbpftest.c: In function ‘main’:
config.gEiBFK/libbpftest.c:12:5: error: ‘bpf_set_link_xdp_fd_opts’ is deprecated: libbpf v0.8+: use bpf_xdp_attach() instead [-Werror=deprecated-declarations]
   12 |     (void) bpf_set_link_xdp_fd_opts(0, 0, 0, &xlopts);
      |     ^
In file included from config.gEiBFK/libbpftest.c:1:
/usr/include/bpf/libbpf.h:1166:16: note: declared here
 1166 | LIBBPF_API int bpf_set_link_xdp_fd_opts(int ifindex, int fd, __u32 flags,
      |                ^~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
 * ERROR: net-libs/xdp-tools-1.2.3::gentoo failed (configure phase):
 *   econf failed
 * 
 * Call stack:
 *               ebuild.sh, line 127:  Called src_configure
 *             environment, line 568:  Called default
 *      phase-functions.sh, line 858:  Called default_src_configure
 *      phase-functions.sh, line 893:  Called __eapi2_src_configure
 *        phase-helpers.sh, line 828:  Called econf
 *        phase-helpers.sh, line 711:  Called __helpers_die 'econf failed'
 *   isolated-functions.sh, line 112:  Called die
 * The specific snippet of code:
 *   		die "$@"
 * 
 * If you need support, post the output of `emerge --info '=net-libs/xdp-tools-1.2.3::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=net-libs/xdp-tools-1.2.3::gentoo'`.
 * The complete build log is located at '/var/log/portage/net-libs:xdp-tools-1.2.3:20220521-222447.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/net-libs/xdp-tools-1.2.3/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/net-libs/xdp-tools-1.2.3/temp/environment'.
 * Working directory: '/var/tmp/portage/net-libs/xdp-tools-1.2.3/work/xdp-tools-1.2.3'
 * S: '/var/tmp/portage/net-libs/xdp-tools-1.2.3/work/xdp-tools-1.2.3'