[CMake] pinocchio required only for tests, fix #22

CMakeLists.txt

@@ -31,7 +31,7 @@ COMPUTE_PROJECT_ARGS(PROJECT_ARGS LANGUAGES CXX)
 PROJECT(${PROJECT_NAME} ${PROJECT_ARGS})
 
 IF(BUILD_PYTHON_INTERFACE)
-  ADD_PROJECT_DEPENDENCY(pinocchio 2.1.0 REQUIRED PKG_CONFIG_REQUIRES "pinocchio >= 2.1.0")
+  ADD_PROJECT_DEPENDENCY(pinocchio)
   FINDPYTHON()
   STRING(REGEX REPLACE "-" "_" PY_NAME ${PROJECT_NAME})
   ADD_SUBDIRECTORY(python)

unittest/CMakeLists.txt

+IF(NOT pinocchio_FOUND)
+  MESSAGE(FATAL_ERROR "Pinocchio is required to build unit tests\n"
+  "please either install Pinocchio or reconfigure without unit tests (-DBUILD_TESTING=OFF)")
+ENDIF(NOT pinocchio_FOUND)
+
 SET(${PROJECT_NAME}_PYTHON_TESTS
   load
   )