How Can I Include Header Files Using Command Line Arguments in GCC?

Including Header Files via Command Line Arguments

In this particular scenario, the need arose to include necessary header files during compilation for a large code base. The original build system, which was complex and OS-dependent, was not an option in this case.

Upon investigation, the "-include" option presented a suitable solution. This command line argument allows users to specify additional header files for inclusion. Notably, the preprocessor's working directory becomes the first search location for the specified files, eliminating the need to add them manually to each individual source file.

For instance, the command:

would include the standard vector header file in the compilation of the main.cpp file.

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