diff --git a/cl/compile.go b/cl/compile.go
index c9ebfb86..1b9501c8 100644
--- a/cl/compile.go
+++ b/cl/compile.go
@@ -305,7 +305,8 @@ func NewPackage(prog llssa.Program, pkg *ssa.Package, files []*ast.File) (ret ll
 	})
 
 	pkgTypes := pkg.Pkg
-	ret = prog.NewPackage(pkgTypes.Name(), pkgTypes.Path())
+	pkgName, pkgPath := pkgTypes.Name(), pkgTypes.Path()
+	ret = prog.NewPackage(pkgName, pkgPath)
 
 	ctx := &context{
 		prog:   prog,
@@ -316,7 +317,7 @@ func NewPackage(prog llssa.Program, pkg *ssa.Package, files []*ast.File) (ret ll
 		link:   make(map[string]string),
 		loaded: make(map[*types.Package]none),
 	}
-	ctx.initFiles(pkgTypes.Path(), files)
+	ctx.initFiles(pkgPath, files)
 	for _, m := range members {
 		member := m.val
 		switch member := member.(type) {
diff --git a/cl/import.go b/cl/import.go
index 30a203a7..c3f175cb 100644
--- a/cl/import.go
+++ b/cl/import.go
@@ -106,7 +106,11 @@ func (p *context) initLinkname(pkgPath, line string) {
 }
 
 func fullName(pkg *types.Package, name string) string {
-	return pkg.Path() + "." + name
+	pkgPath := pkg.Name()
+	if pkgPath != "main" {
+		pkgPath = pkg.Path()
+	}
+	return pkgPath + "." + name
 }
 
 func funcName(pkg *types.Package, fn *ssa.Function) string {
diff --git a/internal/build/build_install.go b/internal/build/build_install.go
index 84075441..9b7f7617 100644
--- a/internal/build/build_install.go
+++ b/internal/build/build_install.go
@@ -50,7 +50,7 @@ const (
 func Do(args []string, mode Mode) {
 	flags, patterns, verbose := parseArgs(args)
 	cfg := &packages.Config{
-		Mode:       loadSyntax | packages.NeedExportFile,
+		Mode:       loadSyntax | packages.NeedDeps | packages.NeedExportFile,
 		BuildFlags: flags,
 	}
 
@@ -61,7 +61,8 @@ func Do(args []string, mode Mode) {
 	check(err)
 
 	// Create SSA-form program representation.
-	_, pkgs, errPkgs := allPkgs(initial, ssa.SanityCheckFunctions)
+	ssaProg, pkgs, errPkgs := allPkgs(initial, ssa.SanityCheckFunctions)
+	ssaProg.Build()
 	for _, errPkg := range errPkgs {
 		log.Println("cannot build SSA for package", errPkg)
 	}
@@ -75,11 +76,11 @@ func Do(args []string, mode Mode) {
 	prog := llssa.NewProgram(nil)
 	llFiles := make([]string, 0, len(pkgs))
 	for _, pkg := range pkgs {
-		pkg.SSA.Build()
 		llFiles = buildPkg(llFiles, prog, pkg, mode)
 	}
 	if mode == ModeInstall {
-		fmt.Fprintln(os.Stderr, "clang", llFiles)
+		// TODO(xsw): show work
+		// fmt.Fprintln(os.Stderr, "clang", llFiles)
 		err = clang.New("").Exec(llFiles...)
 		check(err)
 	}