[CMake] don't require dg-python if we don't build python interface

while here, clean include

CMakeLists.txt

@@ -33,7 +33,6 @@ SETUP_PROJECT()
 ADD_REQUIRED_DEPENDENCY("jrl-walkgen >= 3.2.0")
 ADD_REQUIRED_DEPENDENCY("pinocchio >= 1.2.0")
 ADD_REQUIRED_DEPENDENCY("dynamic-graph >= 3.0.0")
-ADD_REQUIRED_DEPENDENCY("dynamic-graph-python >= 3.0.0")
 ADD_REQUIRED_DEPENDENCY("sot-core >= 3.0")
 ADD_OPTIONAL_DEPENDENCY("hrp2_14_description >= 1.0.5")
 ADD_OPTIONAL_DEPENDENCY("talos_data")
@@ -44,11 +43,16 @@ IF(BUILD_PYTHON_INTERFACE)
   INCLUDE_DIRECTORIES(${PYTHON_INCLUDE_DIRS})
   ADD_REQUIRED_DEPENDENCY("dynamic-graph-python")
   SET(PYTHON_LOCAL_PATH "sot/pattern_generator")
+  ADD_REQUIRED_DEPENDENCY("dynamic-graph-python >= 3.0.0")
 ENDIF(BUILD_PYTHON_INTERFACE)
 
 ADD_SUBDIRECTORY(src)
-ADD_SUBDIRECTORY(include)
-ADD_SUBDIRECTORY(python)
+IF(NOT INSTALL_PYTHON_INTERFACE_ONLY)
+  ADD_SUBDIRECTORY(include/${PROJECT_NAME})
+ENDIF(NOT INSTALL_PYTHON_INTERFACE_ONLY)
+IF(BUILD_PYTHON_INTERFACE)
+  ADD_SUBDIRECTORY(python)
+ENDIF(BUILD_PYTHON_INTERFACE)
 ADD_SUBDIRECTORY(unitTesting)
 
 SETUP_PROJECT_FINALIZE()

include/sot-pattern-generator/CMakeLists.txt

@@ -0,0 +1,22 @@
+# Copyright 2010, François Bleibel, Olivier Stasse, JRL, CNRS/AIST
+#
+
+SET(${PROJECT_NAME}_HEADERS
+  next-step.h
+  exception-pg.h
+  next-step-pg-sot.h
+  pg.h
+  pg-manager.h
+  step-queue.h
+  selector.h
+  step-checker.h
+  step-time-line.h
+  step-observer.h
+  step-computer.h
+  step-computer-force.h
+  step-computer-joystick.h
+  step-computer-pos.h
+  which-foot-upper.h
+  )
+
+INSTALL(FILES ${${PROJECT_NAME}_HEADERS} DESTINATION include/${PROJECT_NAME})