C内核按库功能拆解，编译结果缓存区构建，编译过程与已有缓存结果对照功能实现

native/include/component_constants_internal.h

@@ -0,0 +1,10 @@
+#ifndef NATIVE_COMPONENT_CONSTANTS_INTERNAL_H
+#define NATIVE_COMPONENT_CONSTANTS_INTERNAL_H
+
+/* Include only in modules using PI, so each standalone translation unit can
+ * fold the unchanged double constant without an external data dependency.
+ * The include guard also keeps the diagnostic amalgamation valid.
+ */
+static const double PI=3.1415926535897932384626433832795;
+
+#endif