Software Development – What Is the Meaning of Bootstrapping?

A teardown report is a summary of disassembling a product.

From Wikipedia:

A product teardown, or simply teardown, is the act of disassembling a product, such as a television set, to identify its component parts and functions. For products having secret technology, such as the Mikoyan-Gurevich MiG-25, the process may be secret. For others, including consumer electronics, the results are typically disseminated through photographs and component lists so that others can make use of the information without having to disassemble the product themselves.

Java is object-compatible. You compile it on one patform and the resultant class files can run on any JVM.

C is source-portable. You can take your C source code and compile it on any ISO C compiler, provided you follow the rules - that means no using undefined or implementation defined behaviour or any non-standard features.