| // Copyright 2015 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package main_test |
| |
| import ( |
| "go/build" |
| "runtime" |
| "testing" |
| |
| "cmd/internal/buildid" |
| ) |
| |
| func TestNoteReading(t *testing.T) { |
| // cmd/internal/buildid already has tests that the basic reading works. |
| // This test is essentially checking that -ldflags=-buildid=XXX works, |
| // both in internal and external linking mode. |
| tg := testgo(t) |
| defer tg.cleanup() |
| tg.parallel() |
| |
| tg.tempFile("hello.go", `package main; func main() { print("hello, world\n") }`) |
| const buildID = "TestNoteReading-Build-ID" |
| tg.run("build", "-ldflags", "-buildid="+buildID, "-o", tg.path("hello.exe"), tg.path("hello.go")) |
| id, err := buildid.ReadFile(tg.path("hello.exe")) |
| if err != nil { |
| t.Fatalf("reading build ID from hello binary: %v", err) |
| } |
| if id != buildID { |
| t.Fatalf("buildID in hello binary = %q, want %q", id, buildID) |
| } |
| |
| switch { |
| case !build.Default.CgoEnabled: |
| t.Skipf("skipping - no cgo, so assuming external linking not available") |
| case runtime.GOOS == "plan9": |
| t.Skipf("skipping - external linking not supported") |
| } |
| |
| tg.run("build", "-ldflags", "-buildid="+buildID+" -linkmode=external", "-o", tg.path("hello2.exe"), tg.path("hello.go")) |
| id, err = buildid.ReadFile(tg.path("hello2.exe")) |
| if err != nil { |
| t.Fatalf("reading build ID from hello binary (linkmode=external): %v", err) |
| } |
| if id != buildID { |
| t.Fatalf("buildID in hello binary = %q, want %q (linkmode=external)", id, buildID) |
| } |
| |
| switch runtime.GOOS { |
| case "dragonfly", "freebsd", "linux", "netbsd", "openbsd": |
| // Test while forcing use of the gold linker, since in the past |
| // we've had trouble reading the notes generated by gold. |
| err := tg.doRun([]string{"build", "-ldflags", "-buildid=" + buildID + " -linkmode=external -extldflags=-fuse-ld=gold", "-o", tg.path("hello3.exe"), tg.path("hello.go")}) |
| if err != nil { |
| if tg.grepCountBoth("(invalid linker|gold|cannot find [‘']ld[’'])") > 0 { |
| // It's not an error if gold isn't there. gcc claims it "cannot find 'ld'" if |
| // ld.gold is missing, see issue #22340. |
| t.Log("skipping gold test") |
| break |
| } |
| t.Fatalf("building hello binary: %v", err) |
| } |
| id, err = buildid.ReadFile(tg.path("hello3.exe")) |
| if err != nil { |
| t.Fatalf("reading build ID from hello binary (linkmode=external -extldflags=-fuse-ld=gold): %v", err) |
| } |
| if id != buildID { |
| t.Fatalf("buildID in hello binary = %q, want %q (linkmode=external -extldflags=-fuse-ld=gold)", id, buildID) |
| } |
| } |
| } |