+# should the build process be building the documentation?
+AC_MSG_CHECKING(whether to build documentation)
+AC_ARG_ENABLE([documentation],
+ [AS_HELP_STRING([--enable-documentation], [build the documentation])],
+ [documentation=${enableval}],
+ [documentation=yes])
+AC_MSG_RESULT($documentation)
+if test "x$documentation" = "xyes"
+then
+ AM_CONDITIONAL([DOCUMENTATION],true)
+ AC_DEFINE([DOCUMENTATION],[1],[Building the documentation])
+else
+ AM_CONDITIONAL([DOCUMENTATION],false)
+ AC_DEFINE([DOCUMENTATION],[0],[Not building the documentation])
+fi
+
+# should the build process be building only the documentation?
+AC_MSG_CHECKING(whether to build only documentation)
+AC_ARG_ENABLE([documentation-only],
+ [AS_HELP_STRING([--enable-documentation-only], [build only the documentation])],
+ [documentation_only=${enableval}],
+ [documentation_only=no])
+AC_MSG_RESULT($documentation_only)
+if test "x$documentation_only" = "xyes"
+then
+ AM_CONDITIONAL([DOCUMENTATION_ONLY],true)
+ AC_DEFINE([DOCUMENTATION_ONLY],[1],[Building only the documentation])
+else
+ AM_CONDITIONAL([DOCUMENTATION_ONLY],false)
+ AC_DEFINE([DOCUMENTATION_ONLY],[0],[Not building only the documentation])
+fi
+