Why Can\'t I Find `-lmingw32` When Compiling cgo Libraries on Cygwin64?

Resolving "ld: cannot find -lmingw32" Error in Compiling Cgo Library on Cygwin64

Encountering the error "ld: cannot find -lmingw32" while attempting to compile a cgo library on Cygwin64 can be frustrating. However, a simple solution exists.

Despite installing all "Development" packages in Cygwin64, libraries such as "mingwex" and "mingw32" may not be readily available. This is because these libraries are not included in Cygwin's package repository for 64-bit systems.

Addressing the Issue

Instead of relying on Cygwin, consider downloading and installing TDM MinGW-w64 from its official website. This alternative compiler suite provides the necessary libraries for compiling cgo libraries on Windows.

Steps to Resolve the Error:

1. Download and install TDM MinGW-w64.
2. Set the system PATH environment variable to include the path to the MinGW gcc executable, typically located at C:TDM-GCC-64bin.
3. Retry compiling the cgo library using the updated PATH.

Alternative Solution:

As mentioned in the question details, using the "go install" command should eliminate the need for gcc during the build process. However, some users have reported encountering the same error message even with "go install." In such cases, the solution provided above remains effective.

By utilizing TDM MinGW-w64, you can successfully compile cgo libraries on Cygwin64 and avoid the "ld: cannot find -lmingw32" error.

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