1// SPDX-License-Identifier: Apache-2.0
2// SPDX-FileCopyrightText: 2023 The Ebitengine Authors
3
4//go:build darwin || linux
5
6package purego_test
7
8import (
9 "errors"
10 "fmt"
11 "os"
12 "os/exec"
13 "path/filepath"
14 "runtime"
15 "strings"
16 "testing"
17
18 "github.com/ebitengine/purego"
19)
20
21func TestNestedDlopenCall(t *testing.T) {
22 libFileName := filepath.Join(t.TempDir(), "libdlnested.so")
23 t.Logf("Build %v", libFileName)
24
25 if err := buildSharedLib("CXX", libFileName, filepath.Join("libdlnested", "nested.cpp")); err != nil {
26 t.Fatal(err)
27 }
28 defer os.Remove(libFileName)
29
30 lib, err := purego.Dlopen(libFileName, purego.RTLD_NOW|purego.RTLD_GLOBAL)
31 if err != nil {
32 t.Fatalf("Dlopen(%q) failed: %v", libFileName, err)
33 }
34
35 purego.Dlclose(lib)
36}
37
38func buildSharedLib(compilerEnv, libFile string, sources ...string) error {
39 out, err := exec.Command("go", "env", compilerEnv).Output()
40 if err != nil {
41 return fmt.Errorf("go env %s error: %w", compilerEnv, err)
42 }
43
44 compiler := strings.TrimSpace(string(out))
45 if compiler == "" {
46 return errors.New("compiler not found")
47 }
48
49 args := []string{"-shared", "-Wall", "-Werror", "-o", libFile}
50
51 // macOS arm64 can run amd64 tests through Rossetta.
52 // Build the shared library based on the GOARCH and not
53 // the default behavior of the compiler.
54 if runtime.GOOS == "darwin" {
55 var arch string
56 switch runtime.GOARCH {
57 case "arm64":
58 arch = "arm64"
59 case "amd64":
60 arch = "x86_64"
61 default:
62 return fmt.Errorf("unknown macOS architecture %s", runtime.GOARCH)
63 }
64 args = append(args, "-arch", arch)
65 }
66 cmd := exec.Command(compiler, append(args, sources...)...)
67 if out, err := cmd.CombinedOutput(); err != nil {
68 return fmt.Errorf("compile lib: %w\n%q\n%s", err, cmd, string(out))
69 }
70
71 return nil
72}