diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2cb8a292..39f934ca 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -21,6 +21,7 @@ else(NOT PKG_CONFIG_FOUND)
     if(NOT LIBCONFIGPP_FOUND)
         set(LIBCONFIG_CXXFLAGS "" CACHE STRING "libconfig++ compiler flags")
         set(LIBCONFIG_LDFLAGS "" CACHE STRING "libconfig++ linker flags")
+        message(WARNING "libconfig++ not found. If compilation fails but the library is installed, consider manually setting the LIBCONFIG_CXXFLAGS and LIBCONFIG_LDFLAGS CMake variables.")
     else(NOT LIBCONFIGPP_FOUND)
         set(LIBCONFIG_CXXFLAGS ${LIBCONFIGPP_CFLAGS} CACHE STRING "libconfig++ compiler flags")
         set(LIBCONFIG_LDFLAGS ${LIBCONFIGPP_LDFLAGS} CACHE STRING "libconfig++ linker flags")