Compile cgo lib on Cygwin64: "ld: cannot find -lmingw32"

gcc go sqlite cygwin cgo
Fabian Schmengler picture Fabian Schmengler · May 28, 2016 · Viewed 7.7k times · Source

I'm trying to use a cgo library on Windows, namely github.com/mattn/go-sqlite3

I use Cygwin64 and installed with all "Development" packages, so gcc is availabe.

But running go get github.com/mattn/go-sqlite3 results in:

/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

If I search for "mingwex" and "mingw32" in the Cygwin installer, I get no results. Am I looking for the wrong names or are they not available on 64 bit systems?

Or is there a better way to use the library on Windows?

Note that the README states that

However, if you install go-sqlite3 with go install github.com/mattn/go-sqlite3, you don't need gcc to build your app anymore

but I get the same error message if I use go install.

$ go version
go version go1.6.2 windows/amd64

Answer

Fabian Schmengler picture Fabian Schmengler · May 28, 2016

What finally worked for me (instead of Cygwin) is to download TDM MinGW-w64 from http://tdm-gcc.tdragon.net/download and set the PATH such that gcc from C:\TDM-GCC-64\bin is used.

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