package main import ( "fmt" "os" "path" "strings" ) const LUAU_VERSION = "0.634" const ARTIFACT_NAME = "libLuau.VM.a" func bail(err error) { if err != nil { panic(err) } } func buildVm(artifactDir string, artifactPath string, cmakeFlags ...string) { dir, homeDirErr := os.MkdirTemp("", "gluau-build") bail(homeDirErr) defer os.RemoveAll(dir) // Clone down the Luau repo and checkout the required tag Exec("git", "", "clone", "https://github.com/luau-lang/luau.git", dir) Exec("git", dir, "checkout", LUAU_VERSION) // Build the Luau VM using CMake buildDir := path.Join(dir, "cmake") bail(os.Mkdir(buildDir, os.ModePerm)) defaultCmakeFlags := []string{"..", "-DCMAKE_BUILD_TYPE=RelWithDebInfo", "-DLUAU_EXTERN_C=ON"} Exec("cmake", buildDir, append(defaultCmakeFlags, cmakeFlags...)...) Exec("cmake", buildDir, "--build", ".", "--target Luau.VM", "--config", "RelWithDebInfo") // Copy the artifact to the artifact directory artifactFile, artifactErr := os.ReadFile(artifactPath) bail(artifactErr) bail(os.WriteFile(path.Join(artifactDir, ARTIFACT_NAME), artifactFile, os.ModePerm)) } func main() { homeDir, homeDirErr := os.UserHomeDir() bail(homeDirErr) artifactDir := path.Join(homeDir, ".gluau") artifactPath := path.Join(artifactDir, ARTIFACT_NAME) bail(os.MkdirAll(artifactDir, os.ModePerm)) // TODO: Args for clean build args := os.Args[1:] goArgs := []string{} cmakeFlags := []string{} features := []string{} for _, arg := range args { if arg == "--enable-vector4" { features = append(features, "LUAU_VECTOR4") cmakeFlags = append(cmakeFlags, "-DLUAU_VECTOR_SIZE=4") } else { goArgs = append(goArgs, arg) } } if _, err := os.Stat(artifactPath); err == nil { fmt.Printf("[build] Using existing artifact at %s\n", artifactPath) } else { buildVm(artifactDir, artifactPath, cmakeFlags...) } buildArgs := []string{"build"} if len(features) > 0 { buildArgs = append(buildArgs, []string{"-tags", strings.Join(features, ",")}...) } cmd, _, _, _ := Command("go"). WithArgs(append( buildArgs, goArgs..., )...). WithVar( "CGO_LDFLAGS", fmt.Sprintf("-L %s -lLuau.VM -lm -lstdc++", artifactDir), ). WithVar("CGO_ENABLED", "1"). PipeAll(Forward). ToCommand() bail(cmd.Start()) bail(cmd.Wait()) }