Having difficulty in setting up on Ubuntu 22.04

[shobha-my]

Hello,

go build if piping out pcap errors.

root@localhost:/tmp/dnsmonster# go build -o dnsmonster ./cmd/dnsmonster
# github.com/gopacket/gopacket/pcap
/root/go/pkg/mod/github.com/gopacket/gopacket@v1.1.0/pcap/pcap.go:30:22: undefined: pcapErrorNotActivated
/root/go/pkg/mod/github.com/gopacket/gopacket@v1.1.0/pcap/pcap.go:52:17: undefined: pcapTPtr
/root/go/pkg/mod/github.com/gopacket/gopacket@v1.1.0/pcap/pcap.go:64:10: undefined: pcapPkthdr
/root/go/pkg/mod/github.com/gopacket/gopacket@v1.1.0/pcap/pcap.go:103:6: undefined: pcapBpfProgram
/root/go/pkg/mod/github.com/gopacket/gopacket@v1.1.0/pcap/pcap.go:110:7: undefined: pcapPkthdr
/root/go/pkg/mod/github.com/gopacket/gopacket@v1.1.0/pcap/pcap.go:268:33: undefined: pcapErrorActivated
/root/go/pkg/mod/github.com/gopacket/gopacket@v1.1.0/pcap/pcap.go:269:33: undefined: pcapWarningPromisc
/root/go/pkg/mod/github.com/gopacket/gopacket@v1.1.0/pcap/pcap.go:270:33: undefined: pcapErrorNoSuchDevice
/root/go/pkg/mod/github.com/gopacket/gopacket@v1.1.0/pcap/pcap.go:271:33: undefined: pcapErrorDenied
/root/go/pkg/mod/github.com/gopacket/gopacket@v1.1.0/pcap/pcap.go:750:14: undefined: pcapTPtr
/root/go/pkg/mod/github.com/gopacket/gopacket@v1.1.0/pcap/pcap.go:271:33: too many errors

Dependencies like go, libpcap and linux-headers are already present on the system.

root@localhost:/tmp/dnsmonster# dpkg --list | grep linux-headers
ii  linux-headers-5.15.0-83               5.15.0-83.92                            all          Header files related to Linux kernel version 5.15.0
ii  linux-headers-5.15.0-83-generic       5.15.0-83.92                            amd64        Linux kernel headers for version 5.15.0 on 64 bit x86 SMP
ii  linux-headers-5.15.0-84               5.15.0-84.93                            all          Header files related to Linux kernel version 5.15.0
ii  linux-headers-5.15.0-84-generic       5.15.0-84.93                            amd64        Linux kernel headers for version 5.15.0 on 64 bit x86 SMP
ii  linux-headers-generic                 5.15.0.84.81                            amd64        Generic Linux kernel headers

root@localhost:/tmp/dnsmonster# dpkg --list | grep pcap
ii  libpcap0.8:amd64                      1.10.1-4build1                          amd64        system interface for user-level packet capture
ii  libpcap0.8-dev:amd64                  1.10.1-4build1                          amd64        development library and header files for libpcap0.8

Any help will be appreciated on how to solve these errors.

Thanks!

[mosajjal]

hey mate. that looks like a CGO problem. enable CGO (using CGO_ENABLED=1 env variable) and see if that helps. the Dockerfile has all the option I've used to build the binary as well. There are also exact commands of building a binary using Alpine Linux in GitHub actions that you can use as well.

[shobha-my]

Thank you, it worked!