How to Statically Link a C Library in Go Using cgo?

How to Statically Link a C Library in Go Using Cgo

There are numerous discussions within the Go community on how to statically link a C library in Go using Cgo. However, it's important to note that this process is different from the syntax used in the Cgo documentation.

To statically link a C library, follow these steps:

Step 1: Modify Cgo Directives

In your Go code, include the following Cgo directives:

// #cgo CFLAGS: -I/path/to/c/include
// #cgo LDFLAGS: /path/to/c/build/libgb.a

Replace "/path/to/c/include" with the path to the C header file and "/path/to/c/build/libgb.a" with the path to your statically linked C library.

Step 2: Compile and Link

Compile and link your Go program using the following command:

CGO_ENABLED=0 go build -a -installsuffix cgo  -ldflags '-s'

Ensure that "-s" is included in the "ldflags" argument, as this strips symbols from the linked binary.

If you encounter errors like "not defined," ensure that the symbol exists in your C library.

Note: If you're using Go 1.0, static linking is not supported. Update to Go 1.1 or later for this functionality to work properly.

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