Why Can\'t I Compile a Cgo Library on Cygwin64 and How Do I Fix the \'-lmingw32\' Error?

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

Problem:

While attempting to compile a cgo library (specifically github.com/mattn/go-sqlite3) on Windows using Cygwin64, the following error occurs:

/usr/lib/gcc/x86_64-pc-cygwin/5.3.0/../../../../x86_64-pc-cygwin/bin/ld: cannot find -lmingwex
/usr/lib/gcc/x86_64-pc-cygwin/5.3.0/../../../../x86_64-pc-cygwin/bin/ld: cannot find -lmingw32

Possible Causes:

• Incorrect search terms for "mingwex" and "mingw32" in the Cygwin installer
• Unavailable libraries on 64-bit systems

Solution:

After searching for alternative methods, the issue was resolved by:

1. Install TDM MinGW-w64: Download TDM MinGW-w64 from http://tdm-gcc.tdragon.net/download and install it.
2. Set the PATH variable: Update the system PATH environment variable to include the path to the TDM MinGW-w64 gcc executable. Typically, this is located at C:TDM-GCC-64bin.
3. Rebuild the cgo library: Use go install to build the cgo library. Now, the library should be compiled without the "cannot find -lmingw32" error.

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