neo@MacBook-Pro ~/golang % go build test.go neo@MacBook-Pro ~/golang % ll test -rwxr-xr-x 1 neo staff 2.0M Mar 11 11:10 test neo@MacBook-Pro ~/golang % go build -ldflags "-s -w" test.go neo@MacBook-Pro ~/golang % ll test -rwxr-xr-x 1 neo staff 1.4M Mar 11 11:10 test