在Google Go中安装外部软件包

I was trying to install external packages in GO language. I've found many external packages at http://godashboard.appspot.com/package. I am working on windows system.

I tried this command to install go-router package.

goinstall go-router.googlecode.com/svn/trunk

This resulted in following error....

C:\cygwin\bin\bash.exe: === cd c:\go\src\pkg\go-router.googlecode.com\svn\trunk;
bash gomake -f- install
/cygdrive/c/go/bin/gomake: line 3: exec: make: not found
--- exit status 127
goinstall: go-router.googlecode.com/svn/trunk: install: running bash: exit status 127

I am unable to find out the reason for the error and the meaning of status code. I've read the goinstall command description but no luck..

It seems make command is missing. Make sure it's installed and that PATH variable is defined correctly.