Go to http://glew.sourceforge.net/index.html
Download latest glew source package:
glew-1.5.4-src.tgz
Unpack to c:\src
cd /c/src/glew-1.5.4 make make install GLEW_DEST=/mingw
Build gst-plugins-gl:
Get gst-plugins-gl
cd /c/src git clone git://anongit.freedesktop.org/gstreamer/gst-plugins-gl cd gst-plugins-gl CPPFLAGS="-DNO_STRICT" CFLAGS="-fno-common" CXXFLAGS="-fno-common" LDFLAGS="-Wl,-no-undefined" ./autogen.sh --disable-gtk-doc --prefix=/mingw make make install