fixed case of --enable-doxygen but doxygen not found
@@ -1075,7 +1075,7 @@ fi
# Is doxygen installed? If so, have configure construct the Doxyfile.
AC_CHECK_PROGS([DOXYGEN], [doxygen])
if test -z "$DOXYGEN"; then
- AC_MSG_WARN([Doxygen not found - documentation will not be built])
+ AC_MSG_ERROR([Doxygen not found - install doxygen or build without --enable-doxygen])
fi
# Is graphviz/dot installed? If so, we'll use dot to create
