Fix issues with transitive Eigen3 includes

src/CMakeLists.txt

@@ -10,6 +10,10 @@ FIND_PACKAGE(Boost REQUIRED COMPONENTS system serialization filesystem unit_test
 # locate the necessary dependencies
 # add the necessary include directories
 INCLUDE_DIRECTORIES(. ${Boost_INCLUDE_DIR} ${ADES_INCLUDE_DIRS})
+
+find_package(Eigen3 REQUIRED)
+include_directories(SYSTEM ${EIGEN3_INCLUDE_DIR})
+
 # create the shared library
 ADD_LIBRARY(imagine-planner SHARED ${sources})
 # link necessary libraries