Can I Build Subdirectory C Files with Go\'s CGO Directives?

Building Subdirectory C Files with Go's CGO Directives

Go's build process with CGO (C Go) allows for the inclusion of C or C files in the root of a package. However, there are instances where developers may want to incorporate C files within subdirectories. This article explores the feasibility of this requirement using CGO directives.

Question:

Can C/C files located in a subdirectory be included in the compilation process when using CGO in Go build?

Answer:

No, not directly through CGO directives. The Go build with CGO exclusively includes C/C files present in the root of the package.

Workaround:

The only available option is to create a separate Go package for the subdirectory. This approach involves wrapping the required functionality in exported Go functions and then importing the subdirectory package into the main project.

Limitations:

It's important to note that compiling C/C files with Go's CGO directives is primarily meant for straightforward scenarios. For more complex requirements, it's recommended to build the C/C source separately and provide the appropriate CGO directives during the linking process. The Go toolchain is not designed to serve as a comprehensive build tool for C/C code.

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