message: Add JSON headers only if JSON module is enabled
diff: @@ -465,7 +465,11 @@ set (LIEF_PUBLIC_INCLUDE_DIR
  "${CMAKE_CURRENT_SOURCE_DIR}/include/"
  "${CMAKE_CURRENT_SOURCE_DIR}/api/c/include/"
  "${CMAKE_CURRENT_BINARY_DIR}/include/"
  - "${LIBJSON_SOURCE_DIR}/")
  +)
  +
  +if (LIEF_ENABLE_JSON)
  + list(LIEF_PUBLIC_INCLUDE_DIR APPEND "${LIBJSON_SOURCE_DIR}/")
  +endif()
  set(LIEF_PRIVATE_INCLUDE_DIR
  "${LIEF_PUBLIC_INCLUDE_DIR}"
  