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 TestSimpleDlsym(t *testing.T) {
22 if _, err := purego.Dlsym(purego.RTLD_DEFAULT, "dlsym"); err != nil {
23 t.Errorf("Dlsym with RTLD_DEFAULT failed: %v", err)
24 }
25}
26
27func TestNestedDlopenCall(t *testing.T) {
28 libFileName := filepath.Join(t.TempDir(), "libdlnested.so")
29 t.Logf("Build %v", libFileName)
30
31 if err := buildSharedLib("CXX", libFileName, filepath.Join("libdlnested", "nested.cpp")); err != nil {
32 t.Fatal(err)
33 }
34 defer os.Remove(libFileName)
35
36 lib, err := purego.Dlopen(libFileName, purego.RTLD_NOW|purego.RTLD_GLOBAL)
37 if err != nil {
38 t.Fatalf("Dlopen(%q) failed: %v", libFileName, err)
39 }
40
41 purego.Dlclose(lib)
42}
43
44func buildSharedLib(compilerEnv, libFile string, sources ...string) error {
45 out, err := exec.Command("go", "env", compilerEnv).Output()
46 if err != nil {
47 return fmt.Errorf("go env %s error: %w", compilerEnv, err)
48 }
49
50 compiler := strings.TrimSpace(string(out))
51 if compiler == "" {
52 return errors.New("compiler not found")
53 }
54
55 args := []string{"-shared", "-Wall", "-Werror", "-o", libFile}
56
57 // macOS arm64 can run amd64 tests through Rossetta.
58 // Build the shared library based on the GOARCH and not
59 // the default behavior of the compiler.
60 if runtime.GOOS == "darwin" {
61 var arch string
62 switch runtime.GOARCH {
63 case "arm64":
64 arch = "arm64"
65 case "amd64":
66 arch = "x86_64"
67 default:
68 return fmt.Errorf("unknown macOS architecture %s", runtime.GOARCH)
69 }
70 args = append(args, "-arch", arch)
71 }
72 cmd := exec.Command(compiler, append(args, sources...)...)
73 if out, err := cmd.CombinedOutput(); err != nil {
74 return fmt.Errorf("compile lib: %w\n%q\n%s", err, cmd, string(out))
75 }
76
77 return nil
78}