cmake: export flags

CMakeLists.txt

@@ -251,6 +251,25 @@ ADD_SUBDIRECTORY(examples)
 ADD_SUBDIRECTORY(benchmark)
 
 # --- PACKAGING ----------------------------------------------------------------
+IF(BUILD_WITH_URDF_SUPPORT)
+  SET(PACKAGE_EXTRA_MACROS "${PACKAGE_EXTRA_MACROS}\nset(PINOCCHIO_USE_URDFDOM \"\")")
+ENDIF()
+IF(BUILD_WITH_HPP_FCL_SUPPORT)
+  SET(PACKAGE_EXTRA_MACROS "${PACKAGE_EXTRA_MACROS}\nset(PINOCCHIO_USE_HPP_FCL \"\")")
+ENDIF()
+IF(BUILD_WITH_CPPAD_SUPPORT)
+  SET(PACKAGE_EXTRA_MACROS "${PACKAGE_EXTRA_MACROS}\nset(PINOCCHIO_USE_CPPAD \"\")")
+ENDIF()
+IF(BUILD_WITH_CPPAD_CODEGEN_SUPPORT)
+  SET(PACKAGE_EXTRA_MACROS "${PACKAGE_EXTRA_MACROS}\nset(PINOCCHIO_USE_CPPAD_CODEGEN \"\")")
+ENDIF()
+IF(BUILD_WITH_CASADI_SUPPORT)
+  SET(PACKAGE_EXTRA_MACROS "${PACKAGE_EXTRA_MACROS}\nset(PINOCCHIO_USE_CASADI \"\")")
+ENDIF()
+IF(BUILD_PYTHON_INTERFACE)
+  SET(PACKAGE_EXTRA_MACROS "${PACKAGE_EXTRA_MACROS}\nset(PINOCCHIO_WITH_PYTHON_INTERFACE \"\")")
+ENDIF()
+
 PKG_CONFIG_APPEND_LIBS(${PROJECT_NAME})
 PKG_CONFIG_APPEND_BOOST_LIBS(${BOOST_REQUIRED_COMPONENTS})