VWR-10579: Fix NDOF.cmake to do the right thing on standalone.

The old one just assumed that libndof is installed,
even on standalone.

This patch looks for it on standalone, unless configured
with -DNDOF:BOOL=OFF, and when not found prints an error
message (including telling about -DNDOF:BOOL=OFF).

doc/contributions.txt

@@ -67,6 +67,7 @@ Aleric Inglewood
 	SNOW-756
 	SNOW-764
 	VWR-10001
+	VWR-10579
 	VWR-10759
 	VWR-10837
 	VWR-12691
@@ -215,6 +216,8 @@ Catherine Pfeffer
 Celierra Darling
 	VWR-1274
 	VWR-6975
+Cron Stardust
+	VWR-10579
 Cypren Christenson
 	STORM-417
 Dale Glass
@@ -591,6 +594,7 @@ Robin Cornelius
 	STORM-422
 	VWR-2488
 	VWR-9557
+	VWR-10579
 	VWR-11128
 	VWR-12533
 	VWR-12587

indra/cmake/FindNDOF.cmake

+# -*- cmake -*-
+
+# - Find NDOF
+# Find the NDOF includes and library
+# This module defines
+#  NDOF_INCLUDE_DIR, where to find ndofdev_external.h, etc.
+#  NDOF_LIBRARY, the library needed to use NDOF.
+#  NDOF_FOUND, If false, do not try to use NDOF.
+
+find_path(NDOF_INCLUDE_DIR ndofdev_external.h
+  PATH_SUFFIXES ndofdev
+  )
+
+set(NDOF_NAMES ${NDOF_NAMES} ndofdev libndofdev)
+find_library(NDOF_LIBRARY
+  NAMES ${NDOF_NAMES}
+  )
+
+if (NDOF_LIBRARY AND NDOF_INCLUDE_DIR)
+  set(NDOF_FOUND "YES")
+else (NDOF_LIBRARY AND NDOF_INCLUDE_DIR)
+  set(NDOF_FOUND "NO")
+endif (NDOF_LIBRARY AND NDOF_INCLUDE_DIR)
+
+
+if (NDOF_FOUND)
+  if (NOT NDOF_FIND_QUIETLY)
+    message(STATUS "Found NDOF: Library in '${NDOF_LIBRARY}' and header in '${NDOF_INCLUDE_DIR}' ")
+  endif (NOT NDOF_FIND_QUIETLY)
+else (NDOF_FOUND)
+  if (NDOF_FIND_REQUIRED)
+    message(FATAL_ERROR " * * *\nCould not find NDOF library!\nIf you don't need Space Navigator Joystick support you can skip this test by configuring with -DNDOF:BOOL=OFF\n * * *")
+  endif (NDOF_FIND_REQUIRED)
+endif (NDOF_FOUND)
+
+mark_as_advanced(
+  NDOF_LIBRARY
+  NDOF_INCLUDE_DIR
+  )

indra/cmake/NDOF.cmake

 # -*- cmake -*-
 include(Prebuilt)
 
-use_prebuilt_binary(ndofdev)
+set(NDOF ON CACHE BOOL "Use NDOF space navigator joystick library.")
 
-if (WINDOWS OR DARWIN OR LINUX)
+if (NDOF)
+  if (STANDALONE)
+	set(NDOF_FIND_REQUIRED ON)
+	include(FindNDOF)
+  else (STANDALONE)
+	use_prebuilt_binary(ndofdev)
+
+	if (WINDOWS)
+	  set(NDOF_LIBRARY libndofdev)
+	elseif (DARWIN OR LINUX)
+	  set(NDOF_LIBRARY ndofdev)
+	endif (WINDOWS)
+
+	set(NDOF_INCLUDE_DIR ${ARCH_PREBUILT_DIRS}/include/ndofdev)
+	set(NDOF_FOUND 1)
+  endif (STANDALONE)
+endif (NDOF)
+
+if (NDOF_FOUND)
   add_definitions(-DLIB_NDOF=1)
-endif (WINDOWS OR DARWIN OR LINUX)
+  include_directories(${NDOF_INCLUDE_DIR})
+else (NDOF_FOUND)
+  message(STATUS "Building without N-DoF joystick support")
+  set(NDOF_INCLUDE_DIR "")
+  set(NDOF_LIBRARY "")
+endif (NDOF_FOUND)
 
-if (WINDOWS)
-  set(NDOF_LIBRARY libndofdev)
-elseif (DARWIN OR LINUX)
-  set(NDOF_LIBRARY ndofdev)
-endif (WINDOWS)