Does golang support
#define DEBUG
#ifdef DEBUG
fmt.Println("Debug message...");
#endif
So I can build a debug version with zero runtime overhead?
Go does not have a preprocessor or a macro system. What you could do is pass in tags to go build through the -tags
flag and use build constraints. To do this you would need two versions of the same source and only one would get build depending if the tag is present or not.
Look at build constraints in https://golang.org/pkg/go/build/
main_debug.go
// +build debug
package main
import (
"fmt"
)
func main() {
fmt.Println("Debug build")
}
main_release.go
// +build !debug
package main
import (
"fmt"
)
func main() {
fmt.Println("Release build")
}
Here go build
would compile with main_release.go and go build -tags debug
would compile with main_debug.go