ERROR: Failed to build gem native extension.

nmake
'nmake' is not recognized as an internal or external command,
operable program or batch file.

Appears you don't have a build environment installed, and that amatch
doesn't give you any binaries, meaning...you need a build
environment :slight_smile:
As alpha Blue noted, the easiest way is to download/install mingw +
devkit [devkit is mingw compiler] and hope it builds at that point, or
switch to linux or cygwin [or drop that extension].
http://programming-gone-awry.blogspot.com/2009/05/ruby-19-one-click-installer.html
=r