build fails on linking libpcap.a libnl

[T35R6braPwgDJKq]

...
Building mettle for native
/usr/bin/ld: mettle/build/linux.x86_64/lib/libpcap.a(pcap-linux.o): in function `nl80211_init':
pcap-linux.c:(.text+0x5dd): undefined reference to `nl_socket_alloc'
/usr/bin/ld: pcap-linux.c:(.text+0x610): undefined reference to `genl_connect'
/usr/bin/ld: pcap-linux.c:(.text+0x643): undefined reference to `genl_ctrl_alloc_cache'
/usr/bin/ld: pcap-linux.c:(.text+0x650): undefined reference to `nl_geterror'
/usr/bin/ld: pcap-linux.c:(.text+0x682): undefined reference to `genl_ctrl_search_by_name'
/usr/bin/ld: pcap-linux.c:(.text+0x6af): undefined reference to `nl_cache_free'
/usr/bin/ld: pcap-linux.c:(.text+0x6b8): undefined reference to `nl_socket_free'
/usr/bin/ld: mettle/build/linux.x86_64/lib/libpcap.a(pcap-linux.o): in function `nl80211_cleanup':
pcap-linux.c:(.text+0x6d4): undefined reference to `genl_family_put'
/usr/bin/ld: pcap-linux.c:(.text+0x6dd): undefined reference to `nl_cache_free'
/usr/bin/ld: mettle/build/linux.x86_64/lib/libpcap.a(pcap-linux.o): in function `del_mon_if':
pcap-linux.c:(.text+0x1434): undefined reference to `nlmsg_alloc'
/usr/bin/ld: pcap-linux.c:(.text+0x1463): undefined reference to `genl_family_get_id'
/usr/bin/ld: pcap-linux.c:(.text+0x147b): undefined reference to `genlmsg_put'
/usr/bin/ld: pcap-linux.c:(.text+0x1497): undefined reference to `nla_put'
/usr/bin/ld: pcap-linux.c:(.text+0x14c6): undefined reference to `nl_send_auto_complete'
/usr/bin/ld: pcap-linux.c:(.text+0x14d3): undefined reference to `nl_geterror'
/usr/bin/ld: pcap-linux.c:(.text+0x14ed): undefined reference to `nl_wait_for_ack'
/usr/bin/ld: pcap-linux.c:(.text+0x14fa): undefined reference to `nl_geterror'
/usr/bin/ld: pcap-linux.c:(.text+0x1521): undefined reference to `nlmsg_free'
/usr/bin/ld: pcap-linux.c:(.text+0x1535): undefined reference to `nlmsg_free'
/usr/bin/ld: mettle/build/linux.x86_64/lib/libpcap.a(pcap-linux.o): in function `enter_rfmon_mode_mac80211':
pcap-linux.c:(.text+0x2083): undefined reference to `nlmsg_alloc'
/usr/bin/ld: pcap-linux.c:(.text+0x20a4): undefined reference to `genl_family_get_id'
/usr/bin/ld: pcap-linux.c:(.text+0x20bc): undefined reference to `genlmsg_put'
/usr/bin/ld: pcap-linux.c:(.text+0x20db): undefined reference to `nla_put'
/usr/bin/ld: pcap-linux.c:(.text+0x2100): undefined reference to `nla_put'
/usr/bin/ld: pcap-linux.c:(.text+0x2125): undefined reference to `nla_put'
/usr/bin/ld: pcap-linux.c:(.text+0x213a): undefined reference to `nl_send_auto_complete'
/usr/bin/ld: pcap-linux.c:(.text+0x214c): undefined reference to `nl_geterror'
/usr/bin/ld: pcap-linux.c:(.text+0x2168): undefined reference to `nl_wait_for_ack'
/usr/bin/ld: pcap-linux.c:(.text+0x2179): undefined reference to `nlmsg_free'
/usr/bin/ld: pcap-linux.c:(.text+0x21a0): undefined reference to `nl_geterror'
/usr/bin/ld: pcap-linux.c:(.text+0x21c7): undefined reference to `nlmsg_free'
/usr/bin/ld: pcap-linux.c:(.text+0x21d9): undefined reference to `nlmsg_free'
/usr/bin/ld: mettle/build/linux.x86_64/lib/libpcap.a(pcap-linux.o): in function `nl80211_cleanup':
pcap-linux.c:(.text+0x6e6): undefined reference to `nl_socket_free'
collect2: error: ld returned 1 exit status
make[3]: *** [Makefile:390: sniffer] Error 1
make[2]: *** [Makefile:353: install-recursive] Error 1
make[1]: *** [Makefile:383: install-recursive] Error 1
make: *** [make/Makefile.mettle:70: mettle/build/linux.x86_64/bin/mettle.built] Error 2

pacman -Q libnl 
libnl 3.5.0-3

[timwr]

What OS are you building on?
Also can you try:
make TARGET=x86_64-linux-musl

[T35R6braPwgDJKq]

arch linux
make TARGET=x86_64-linux-musl works though - but whats the problem?