I see there is some documentation about build constraints in
go/go/build/doc.go.
There is no mention of netgo on this page now but this seems like an
appropriate
spot to mention the use of the netgo tag for gc and then how to achieve the
equivalent effect with gccgo.
On 04/07/2015 01:09 PM, Ian
PR 63731 points out that when using gccgo there is no way to request a
Go program that uses the native Go DNS lookup code rather than using
the system libraries. This patch from Lynn Boger at least provides a
mechanism for that, by adding a -lnetgo library that can be used to
pick up the Go DNS lo
