use CMake for EXAMPLE_ROBOT_DATA_MODEL_DIR

CMakeLists.txt

@@ -64,6 +64,11 @@ if(NOT INSTALL_PYTHON_INTERFACE_ONLY)
   add_library(${PROJECT_NAME} INTERFACE)
   target_include_directories(${PROJECT_NAME}
                              INTERFACE $<INSTALL_INTERFACE:include>)
+  target_compile_definitions(
+    ${PROJECT_NAME}
+    INTERFACE
+      EXAMPLE_ROBOT_DATA_MODEL_DIR="$<INSTALL_PREFIX>/share/${PROJECT_NAME}/robots"
+  )
   install(
     TARGETS ${PROJECT_NAME}
     EXPORT ${TARGETS_EXPORT_NAME}

include/example-robot-data/CMakeLists.txt

-configure_file(path.hpp.in path.hpp)
 install(FILES ${CMAKE_CURRENT_BINARY_DIR}/path.hpp
         DESTINATION include/${CUSTOM_HEADER_DIR})

include/example-robot-data/path.hpp.in → include/example-robot-data/path.hpp

 #ifndef EXAMPLE_ROBOT_DATA_PATH_HPP
 #define EXAMPLE_ROBOT_DATA_PATH_HPP
 
-#define EXAMPLE_ROBOT_DATA_MODEL_DIR "${CMAKE_INSTALL_PREFIX}/share/${PROJECT_NAME}/robots"
+#include <example-robot-data/warning.hh>
+
+#pragma message EXAMPLE_ROBOT_DATA_WARN( \
+        "Header `example-robot-data/path.hpp` is deprecated and useless!")
 
 #endif