diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index c2abdd9559d..5bdb98aad5d 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -4,10 +4,10 @@
 add_compile_options($<TARGET_PROPERTY:compiler,warning_shadow_variables>)
 
 add_subdirectory(crc)
-if(NOT CONFIG_EXTERNAL_LIBC)
+if(NOT CONFIG_NATIVE_LIBC)
 add_subdirectory(libc)
-add_subdirectory(posix)
 endif()
+add_subdirectory(posix)
 add_subdirectory_ifdef(CONFIG_CPP                  cpp)
 add_subdirectory(hash)
 add_subdirectory(heap)