proposal: go build static when cgo use libc

[jokemanfire]

Proposal Details

Now I use 'go build ' to compile static program , when the program use cgo(It use some libc fuction),
I do like this
CGO_ENABLED=1 GOOS=linux GOARCH=amd64 CGO_LDFLAGS=“-static” go build -a -v
It use libc default , but libc's static link is not static really, it use dynamic library.
May go build point the static flag, It can build static really, use like musl default?
No need for me to specify like this:
CGO_ENABLED=1 GOOS=linux GOARCH=amd64 CC=x86_64-linux-musl-gcc CGO_LDFLAGS=“-static” go build -a -v
It could？

[seankhliao]

Duplicate of #26492