diff --git a/cc/config/toolchain.go b/cc/config/toolchain.go
index ff556f1..20384a8 100644
--- a/cc/config/toolchain.go
+++ b/cc/config/toolchain.go
@@ -118,6 +118,8 @@
 	DefaultSharedLibraries() []string
 
 	Bionic() bool
+	Glibc() bool
+	Musl() bool
 }
 
 type toolchainBase struct {
@@ -194,6 +196,14 @@
 	return false
 }
 
+func (toolchainBase) Glibc() bool {
+	return false
+}
+
+func (toolchainBase) Musl() bool {
+	return false
+}
+
 func (t toolchainBase) ToolPath() string {
 	return ""
 }