diff --git a/android/config_bp2build.go b/android/config_bp2build.go
index 830890d..2beeb51 100644
--- a/android/config_bp2build.go
+++ b/android/config_bp2build.go
@@ -95,15 +95,6 @@
 	return ev.pctx.VariableConfigMethod(name, method)
 }
 
-func (ev ExportedVariables) ExportStringStaticVariableWithEnvOverride(name, envVar, defaultVal string) {
-	ev.ExportVariableConfigMethod(name, func(config Config) string {
-		if override := config.Getenv(envVar); override != "" {
-			return override
-		}
-		return defaultVal
-	})
-}
-
 // ExportSourcePathVariable declares a static "source path" variable and exports
 // it to Bazel's toolchain.
 func (ev ExportedVariables) ExportSourcePathVariable(name string, value string) {
diff --git a/cc/config/global.go b/cc/config/global.go
index 0257fa3..05dc773 100644
--- a/cc/config/global.go
+++ b/cc/config/global.go
@@ -417,12 +417,15 @@
 	exportedVars.ExportStringList("CommonGlobalIncludes", commonGlobalIncludes)
 	pctx.PrefixedExistentPathsForSourcesVariable("CommonGlobalIncludes", "-I", commonGlobalIncludes)
 
+	exportedVars.ExportStringStaticVariable("CLANG_DEFAULT_VERSION", ClangDefaultVersion)
+	exportedVars.ExportStringStaticVariable("CLANG_DEFAULT_SHORT_VERSION", ClangDefaultShortVersion)
+
 	pctx.StaticVariableWithEnvOverride("ClangBase", "LLVM_PREBUILTS_BASE", ClangDefaultBase)
-	exportedVars.ExportStringStaticVariableWithEnvOverride("ClangVersion", "LLVM_PREBUILTS_VERSION", ClangDefaultVersion)
+	pctx.StaticVariableWithEnvOverride("ClangVersion", "LLVM_PREBUILTS_VERSION", ClangDefaultVersion)
 	pctx.StaticVariable("ClangPath", "${ClangBase}/${HostPrebuiltTag}/${ClangVersion}")
 	pctx.StaticVariable("ClangBin", "${ClangPath}/bin")
 
-	exportedVars.ExportStringStaticVariableWithEnvOverride("ClangShortVersion", "LLVM_RELEASE_VERSION", ClangDefaultShortVersion)
+	pctx.StaticVariableWithEnvOverride("ClangShortVersion", "LLVM_RELEASE_VERSION", ClangDefaultShortVersion)
 	pctx.StaticVariable("ClangAsanLibDir", "${ClangBase}/linux-x86/${ClangVersion}/lib/clang/${ClangShortVersion}/lib/linux")
 
 	// These are tied to the version of LLVM directly in external/llvm, so they might trail the host prebuilts