1. A method for processing a source file to generate an object file, comprising: obtaining a header file referenced by the source file; mapping a body of a data symbol to a first hash value, wherein the data symbol is defined in the header file; mapping an identifier of the data symbol to a second hash value; in response to the source file calling the data symbol, creating a first indicator using an indicator generator method based on the first hash value and the second hash value, wherein definitions of different data symbols result in creating different indicators that reflect the definition; adding the first indicator into an extensible field of a compiling result of compiling the source file so as to generate the object file, wherein the extensible field is based on an object file format associated with the object file; in response to the header file referenced by the source file being updated, looking up in the header file a definition of the data symbol called by the source file; creating a second indicator using the indicator generator method based on the definition of the data symbol; comparing the created first indicator to the created second indicator; and in response to the second indicator being matched to the first indicator in an object file generated from the source file, notifying that the source file does not need to be re-compiled.