(defconst emacs-build-system (system-name)
"Name of the system on which Emacs was built.")
+(defvar motif-version-string)
+(defvar gtk-version-string)
+(defvar ns-version-string)
+
(defun emacs-version (&optional here)
"Return string describing the version of Emacs that is running.
If optional argument HERE is non-nil, insert string at point.