example to build a win64 binary from macOS for github.com/go-vgo/robotgo


[prereq]
go get github.com/go-vgo/robotgo
copy libz.a to $GOPATH/src/github.com/go-vgo/robotgo/cdeps/win64/


[create libz.a]
brew install mingw-w64

#download zlib sourcecode
cd zlib-1.2.11
CC=x86_64-w64-mingw32-gcc ./configure --static
make
#let libtool fail, then run
x86_64-w64-mingw32-ar rcs libz.a *.o
cp libz.a $GOPATH/src/github.com/go-vgo/robotgo/cdeps/win64/

x86_64-w64-mingw32-objdump -f libz.a


[create syso]
go get github.com/akavel/rsrc
rsrc -arch amd64 -ico icon.ico -o rsrc.syso