-----Original Message----- From: Peter Krempa <pkrempa(a)redhat.com&gt; Subject: Re: Report a build issue On Wed, Apr 02, 2025 at 06:56:17 +0000, Duan, Zhenzhong wrote: > Hi, > > When -Dlibnl=disabled, build failed as below: > > ../src/util/virnetdevbridge.c: In function 'virNetDevBridgeSetupVlans': > ../src/util/virnetdevbridge.c:326:9: error: implicit declaration of function 'virNetlinkBridgeVlanFilterSet'; did you mean 'virNetDevBridgeGetVlanFiltering'? [-Werror=implicit-function-declaration] > 326 | if (virNetlinkBridgeVlanFilterSet(ifname, RTM_DELLINK, 0, 1, &error) < 0) { > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > | virNetDevBridgeGetVlanFiltering > ../src/util/virnetdevbridge.c:326:9: error: nested extern declaration of 'virNetlinkBridgeVlanFilterSet' [-Werror=nested-externs] > ../src/util/virnetdevbridge.c:326:47: error: 'RTM_DELLINK' undeclared (first use in this function) > 326 | if (virNetlinkBridgeVlanFilterSet(ifname, RTM_DELLINK, 0, 1, &error) < 0) { > | ^~~~~~~~~~~ > ../src/util/virnetdevbridge.c:326:47: note: each undeclared identifier is reported only once for each function it appears in > ../src/util/virnetdevbridge.c:346:55: error: 'RTM_SETLINK' undeclared (first use in this function) > 346 | if (virNetlinkBridgeVlanFilterSet(ifname, RTM_SETLINK, flags, > | ^~~~~~~~~~~ > cc1: all warnings being treated as errors See: https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/message/6... 5FIPWHRVUSMP575FH536QLU/ https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/message/Z... ER462G33G3L7Y6I2GKEEM/ https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/message/P... WNFMVABSD3A6FAM5YFHPG/ In short; unless you are building the libvirt client only you want libnl installed.