Revert merge 08b67f4c.

CMakeLists.txt

@@ -37,7 +37,7 @@ ADD_REQUIRED_DEPENDENCY("jrl-mal >= 1.9.0")
 ADD_REQUIRED_DEPENDENCY("abstract-robot-dynamics >= 1.15")
 ADD_REQUIRED_DEPENDENCY("jrl-dynamics >= 1.19.1")
 
-ADD_REQUIRED_DEPENDENCY("hrp2-dynamics >= 1.1.0")
+ADD_OPTIONAL_DEPENDENCY("hrp2-dynamics >= 1.1.0")
 
 # Add aggressive optimization flags in release mode.
 IF(CMAKE_COMPILER_IS_GNUCXX)
@@ -52,6 +52,6 @@ IF(CMAKE_COMPILER_IS_GNUCXX)
 ENDIF(CMAKE_COMPILER_IS_GNUCXX)
 
 ADD_SUBDIRECTORY(src)
-ADD_SUBDIRECTORY(tests)
+#ADD_SUBDIRECTORY(tests)
 
 SETUP_PROJECT_FINALIZE()