Golang conditional compilation
build, go, go-build
Solution
You must follow `// +build XXX` with a blank line.
In my brief search, I couldn't find where/if this is documented. But the source clearly calls it out
Problem
I've got a trouble with conditional compilation in Go 1. Here is my test code. Is there anything I misunderstand about the "// +build" constraint and the "-tags" flag? main1.go ``` // +build main1 package main import ( "fmt" ) func main() { fmt.Println("This is main 1") } ``` main2.go ``` // +build main2 package main import ( "fmt" ) func main() { fmt.Println("This is main 2") } ``` when running "go build", I still got compile error ``` $ go build -tags 'main1' # test ./main2.go:8: main redeclared in this block previous declaration at ./main1.go:8 ```