Finding out more about go build

If you want to learn more about what is happening behind the scenes when you execute a go build command, you should add the -x flag to it:

$ go build -x defer.go
WORK=/var/folders/sk/ltk8cnw50lzdtr2hxcj5sv2m0000gn/T/go-build254573394
mkdir -p $WORK/b001/
cat >$WORK/b001/importcfg.link << 'EOF' # internal
packagefile command-line-arguments=/Users/mtsouk/Library/Caches/go-build/9d/9d6ca8651e083f3662adf82bb90a00837fc76f55839e65c7107bb55fcab92458-d
packagefile fmt=/usr/local/Cellar/go/1.11.4/libexec/pkg/darwin_amd64/fmt.a
packagefile runtime=/usr/local/Cellar/go/1.11.4/libexec/pkg/darwin_amd64/runtime.a
packagefile errors=/usr/local/Cellar/go/1.11.4/libexec/pkg/darwin_amd64/errors.a
packagefile io=/usr/local/Cellar/go/1.11.4/libexec/pkg/darwin_amd64/io.a
packagefile math=/usr/local/Cellar/go/1.11.4/libexec/pkg/darwin_amd64/math.a
packagefile...