Unable to compile basic Go example code

[hbina]

I am following the guide here https://ebpf-go.dev/guides/getting-started/
But I am getting the following error

hbina@akarin ~/D/test-bpf (main) [1]> go env CGO_ENABLED                                                                                                                                  (base) 
1
hbina@akarin ~/D/test-bpf (main)> go build                                                                                                                                                (base) 
package main: C source files not allowed when not using cgo or SWIG: counter.c

[lmb]

You're probably missing //go:build ignore in counter.c. See the little pop out in the getting started guide which explains why that is necessary.

[hbina]

Apparently, the problem is that clang-format will put a space in the comment causing go to ignore that comment.
It becomes,

// go:build source