diff --git a/cc/x86_linux_host.go b/cc/x86_linux_host.go
index 98bceef..a3c50d1 100644
--- a/cc/x86_linux_host.go
+++ b/cc/x86_linux_host.go
@@ -108,8 +108,8 @@
 func init() {
 	pctx.StaticVariable("linuxGccVersion", linuxGccVersion)
 
-	pctx.StaticVariable("linuxGccRoot",
-		"${SrcDir}/prebuilts/gcc/${HostPrebuiltTag}/host/x86_64-linux-glibc2.15-${linuxGccVersion}")
+	pctx.SourcePathVariable("linuxGccRoot",
+		"prebuilts/gcc/${HostPrebuiltTag}/host/x86_64-linux-glibc2.15-${linuxGccVersion}")
 
 	pctx.StaticVariable("linuxGccTriple", "x86_64-linux")