--- CMakeLists.txt.orig	2021-12-28 17:18:42 UTC
+++ CMakeLists.txt
@@ -17,9 +17,6 @@ option(RYML_DBG "Enable (very verbose) ryml debug prin
 
 #-------------------------------------------------------
 
-c4_require_subproject(c4core INCORPORATE
-    SUBDIRECTORY ${RYML_EXT_DIR}/c4core)
-
 c4_add_library(ryml
     SOURCES
         ryml.hpp
@@ -47,14 +44,15 @@ c4_add_library(ryml
         c4/yml/tree.cpp
         c4/yml/writer.hpp
         c4/yml/yml.hpp
-        ryml.natvis
     SOURCE_ROOT ${RYML_SRC_DIR}
     INC_DIRS
         $<BUILD_INTERFACE:${RYML_SRC_DIR}>
         $<INSTALL_INTERFACE:include>
-    LIBS c4core
-    INCORPORATE c4core
     )
+
+include_directories(/usr/local/include)
+target_link_libraries(ryml c4core)
+
 
 if(NOT RYML_DEFAULT_CALLBACKS)
     target_compile_definitions(ryml PRIVATE RYML_NO_DEFAULT_CALLBACKS)