-trimpath
                remove all file system paths from the resulting executable.
                Instead of absolute file system paths, the recorded file names
                will begin with either "go" (for the standard library),
                or a module path@version (when using modules),
                or a plain import path (when using GOPATH).

$ mkdir /tmp/xyz123
$ cd /tmp/xyz123/
$ cat > hello.go
package main
func main() { println("hello") }
$ out=gc.out && gotip clean -cache && gotip build -o $out hello.go && strings $out | grep xyz123 | head -3
/tmp/xyz123/hello.go
$ out=gc.trimpath.out && gotip clean -cache && gotip build -trimpath -o $out hello.go && strings $out | grep xyz123 | head -3
$ out=gccgo.out && gotip clean -cache && gotip build -compiler gccgo -o $out hello.go && strings $out | grep xyz123 | head -3
/tmp/xyz123
/tmp/xyz123/hello.go
GNU Go 8.3.0 -m64 -mtune=generic -march=x86-64 -g -fgo-relative-import-path=_/tmp/xyz123
$ out=gccgo.trimpath.out && gotip clean -cache && gotip build -trimpath -compiler gccgo -o $out hello.go && strings $out | grep xyz123 | head -3
/tmp/xyz123
/tmp/xyz123/hello.go
GNU Go 8.3.0 -m64 -mtune=generic -march=x86-64 -g -fgo-relative-import-path=_/tmp/xyz123
$ diff gccgo.out gccgo.trimpath.out