[cmake] Add INSTALL_PYTHON_INTERFACE_ONLY variable.

This prevent to install plugin and libraries when in python only mode.

CMakeLists.txt

@@ -59,7 +59,10 @@ PKG_CONFIG_APPEND_LIBS("sot-torque-control")
 # Boost
 SET(BOOST_COMPONENTS thread filesystem program_options unit_test_framework system regex)
 
+# Default option for python.
 OPTION (BUILD_PYTHON_INTERFACE "Build the python bindings" ON)
+OPTION (INSTALL_PYTHON_INTERFACE_ONLY "Install *ONLY* the python binding" OFF)
+
 IF(BUILD_PYTHON_INTERFACE)
   FINDPYTHON()
   SET(BOOST_COMPONENTS ${BOOST_COMPONENTS} python)
@@ -158,7 +161,9 @@ ENDIF(UNIX AND NOT APPLE)
 
 TARGET_LINK_LIBRARIES(${LIBRARY_NAME} ${Boost_LIBRARIES})
 
-INSTALL(TARGETS ${LIBRARY_NAME} DESTINATION ${CMAKE_INSTALL_LIBDIR})
+IF (NOT INSTALL_PYTHON_INTERFACE_ONLY)
+  INSTALL(TARGETS ${LIBRARY_NAME} DESTINATION ${CMAKE_INSTALL_LIBDIR})
+ENDIF(NOT INSTALL_PYTHON_INTERFACE_ONLY)
 
 IF(BUILD_PYTHON_INTERFACE)
   INSTALL(FILES python/dynamic_graph/sot/torque_control/__init__.py

src/CMakeLists.txt

@@ -124,9 +124,11 @@ FOREACH(plugin ${plugins})
       sot-torque-control-${PYTHON_LIBRARY_NAME}-wrap
       )
   ENDIF(BUILD_PYTHON_INTERFACE)
-  # Install plugins
-  INSTALL(TARGETS ${LIBRARY_NAME}
-    DESTINATION ${DYNAMIC_GRAPH_PLUGINDIR})
+  IF (NOT INSTALL_PYTHON_INTERFACE_ONLY)
+    # Install plugins
+    INSTALL(TARGETS ${LIBRARY_NAME}
+      DESTINATION ${DYNAMIC_GRAPH_PLUGINDIR})
+  ENDIF(NOT INSTALL_PYTHON_INTERFACE_ONLY)
 ENDFOREACH(plugin)
 
 # Bindings Python