diff --git a/.gitignore b/.gitignore
new file mode 100644
index 00000000..4363cb80
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,32 @@
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+*.txt
+*.cache
+.DS_Store
+
+# gop
+# gopfmt
+# goptestgo
+
+# Folders
+_obj
+_test
+_old
+_t
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+coverage.txt
+
+xgo_autogen*.go
diff --git a/README.md b/README.md
index 446b1356..99886104 100644
--- a/README.md
+++ b/README.md
@@ -6,9 +6,9 @@
 
 [![Test](https://github.com/goplus/llar/actions/workflows/go.yml/badge.svg)](https://github.com/goplus/llar/actions/workflows/go.yml)
 [![codecov](https://codecov.io/gh/goplus/llar/branch/main/graph/badge.svg)](https://codecov.io/gh/goplus/llar)
-[![Language](https://img.shields.io/badge/language-XGo-blue.svg)](https://github.com/goplus/gop)
+[![Language](https://img.shields.io/badge/language-XGo-blue.svg)](https://github.com/goplus/xgo)
 
-LLAR is a cloud-based multi-language package manager built with [XGo](https://github.com/goplus/gop). It resolves dependencies, downloads source code, and builds libraries from source using declarative formulas.
+LLAR is a cloud-based multi-language package manager built with [XGo](https://github.com/goplus/xgo). It resolves dependencies, downloads source code, and builds libraries from source using declarative formulas.
 
 ## Installation
 
diff --git a/cmp/cmp.go b/cmp/cmp.go
index f3d0daef..8aa2e6fb 100644
--- a/cmp/cmp.go
+++ b/cmp/cmp.go
@@ -6,7 +6,9 @@ package cmp
 
 import "github.com/goplus/llar/mod/module"
 
-const GopPackage = true
+const (
+	XGoPackage = true
+)
 
 type CmpApp struct {
 	fCompareVer func(a, b module.Version) int
@@ -14,11 +16,11 @@ type CmpApp struct {
 
 // The provided function fn will be used to compare version strings
 // when resolving dependencies for those versions which are not in Debian-style.
-func (f *CmpApp) CompareVer(fn func(a, b module.Version) int) {
-	f.fCompareVer = fn
+func (app *CmpApp) CompareVer(fn func(a, b module.Version) int) {
+	app.fCompareVer = fn
 }
 
-// Gopt_CmpApp_Main is main entry of this classfile.
-func Gopt_CmpApp_Main(this interface{ MainEntry() }) {
+// XGot_CmpApp_Main is main entry of this classfile.
+func XGot_CmpApp_Main(this interface{ MainEntry() }) {
 	this.MainEntry()
 }
diff --git a/formula/classfile.go b/formula/classfile.go
index f9d5b91b..a3532236 100644
--- a/formula/classfile.go
+++ b/formula/classfile.go
@@ -13,7 +13,9 @@ import (
 	"github.com/qiniu/x/gsh"
 )
 
-const GopPackage = true
+const (
+	XGoPackage = true
+)
 
 // -----------------------------------------------------------------------------
 
@@ -269,11 +271,13 @@ func (p *ModuleF) OnTest(f func(ctx *Context, proj *Project, out *TestResult)) {
 
 // -----------------------------------------------------------------------------
 
-// Gopt_ModuleF_Main is main entry of this classfile.
-func Gopt_ModuleF_Main(this interface {
+// XGot_ModuleF_Main is main entry of this classfile.
+func XGot_ModuleF_Main(this interface {
 	app() *gsh.App
 	MainEntry()
 }) {
 	this.MainEntry()
 	gsh.InitApp(this.app())
 }
+
+// -----------------------------------------------------------------------------
diff --git a/formula/classfile_test.go b/formula/classfile_test.go
index 2391c571..cb8e2cc6 100644
--- a/formula/classfile_test.go
+++ b/formula/classfile_test.go
@@ -33,10 +33,10 @@ func (f *testFormula) MainEntry() {
 // the unexported app() helper it dispatches through.
 func TestGopt_ModuleF_Main(t *testing.T) {
 	f := &testFormula{}
-	Gopt_ModuleF_Main(f)
+	XGot_ModuleF_Main(f)
 
 	if !f.mainCalled {
-		t.Fatal("MainEntry was not invoked by Gopt_ModuleF_Main")
+		t.Fatal("MainEntry was not invoked by XGot_ModuleF_Main")
 	}
 	if f.modPath != "foo/bar" {
 		t.Errorf("Id: modPath = %q, want %q", f.modPath, "foo/bar")
diff --git a/formula/demo/zlib/zlib_llar.gox b/formula/demo/zlib/zlib_llar.gox
new file mode 100644
index 00000000..22003d57
--- /dev/null
+++ b/formula/demo/zlib/zlib_llar.gox
@@ -0,0 +1,31 @@
+id "madler/zlib"
+
+fromVer "1.0.0"
+
+onBuild (ctx, proj, out) => {
+	installDir, err := ctx.outputDir()
+	if err != nil {
+		out.addErr err
+		return
+	}
+
+	a := autotools.new(ctx.SourceDir, ctx.SourceDir+"/_build", installDir)
+
+	err = a.configure("--static")
+	if err != nil {
+		out.addErr err
+		return
+	}
+	err = a.build()
+	if err != nil {
+		out.addErr err
+		return
+	}
+	err = a.install()
+	if err != nil {
+		out.addErr err
+		return
+	}
+
+	out.setMetadata "-lz"
+}
diff --git a/gox.mod b/gox.mod
new file mode 100644
index 00000000..c1326842
--- /dev/null
+++ b/gox.mod
@@ -0,0 +1,11 @@
+xgo 1.6
+
+project *_llar.gox ModuleF github.com/goplus/llar/formula
+
+import github.com/goplus/llar/x/autotools
+import github.com/goplus/llar/x/cmake
+
+project *_cmp.gox CmpApp github.com/goplus/llar/cmp
+
+import golang.org/x/mod/semver
+import github.com/goplus/llar/x/gnu
diff --git a/internal/ixgo/pkg/github.com/goplus/llar/formula/export.go b/internal/ixgo/pkg/github.com/goplus/llar/formula/export.go
index 5d9bc4c8..5ad52b56 100755
--- a/internal/ixgo/pkg/github.com/goplus/llar/formula/export.go
+++ b/internal/ixgo/pkg/github.com/goplus/llar/formula/export.go
@@ -36,12 +36,12 @@ func init() {
 		AliasTypes: map[string]reflect.Type{},
 		Vars:       map[string]reflect.Value{},
 		Funcs: map[string]reflect.Value{
-			"Gopt_ModuleF_Main": reflect.ValueOf(q.Gopt_ModuleF_Main),
+			"XGot_ModuleF_Main": reflect.ValueOf(q.XGot_ModuleF_Main),
 			"NewContext":        reflect.ValueOf(q.NewContext),
 		},
 		TypedConsts: map[string]ixgo.TypedConst{},
 		UntypedConsts: map[string]ixgo.UntypedConst{
-			"GopPackage": {"untyped bool", constant.MakeBool(bool(q.GopPackage))},
+			"XGoPackage": {"untyped bool", constant.MakeBool(bool(q.XGoPackage))},
 		},
 	})
 }