diff --git a/CMakeLists.txt b/CMakeLists.txt
index f0b430400d2075468ee3e67b15cba0b7329458c7..d57d5da486ec6c7add632582e5ad39c5d5aaf0af 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -97,3 +97,10 @@ set_target_properties(interpreter PROPERTIES BUILD_WITH_INSTALL_RPATH True)
 install(TARGETS interpreter DESTINATION bin)
 
 add_subdirectory(src)
+
+# Print warning.
+MESSAGE(STATUS "=====================================================")
+MESSAGE(STATUS "WARNING: this package has an 'install' target.")
+MESSAGE(STATUS "Always run 'make install' in the package directory to")
+MESSAGE(STATUS "properly install the Python modules and entities.")
+MESSAGE(STATUS "=====================================================")