diff --git a/libsrc/core/utils.hpp b/libsrc/core/utils.hpp
index 2c88629d..c8dc1e9e 100644
--- a/libsrc/core/utils.hpp
+++ b/libsrc/core/utils.hpp
@@ -4,7 +4,12 @@
 #include <chrono>
 #include <sstream>
 #include <string>
+
+#ifdef WIN32
+#include <intrin.h>   // for __rdtsc()  CPU time step counter
+#else
 #include <x86intrin.h>   // for __rdtsc()  CPU time step counter
+#endif // WIN32
 
 #include "ngcore_api.hpp"       // for NGCORE_API
 
diff --git a/libsrc/gprim/CMakeLists.txt b/libsrc/gprim/CMakeLists.txt
index ac4b8f11..3957476a 100644
--- a/libsrc/gprim/CMakeLists.txt
+++ b/libsrc/gprim/CMakeLists.txt
@@ -3,9 +3,6 @@ add_library(gprim OBJECT
         adtree.cpp geom2d.cpp geom3d.cpp geomfuncs.cpp 
         geomtest3d.cpp transform3d.cpp spline.cpp splinegeometry.cpp
         )
-if(NOT WIN32)
-  target_link_libraries(gprim ngcore)
-endif(NOT WIN32)
 
 set_target_properties( gprim PROPERTIES POSITION_INDEPENDENT_CODE ON )
 
diff --git a/libsrc/linalg/CMakeLists.txt b/libsrc/linalg/CMakeLists.txt
index 9f35d751..a5a5a4f2 100644
--- a/libsrc/linalg/CMakeLists.txt
+++ b/libsrc/linalg/CMakeLists.txt
@@ -4,10 +4,6 @@ add_library( la OBJECT
 
 set_target_properties(la PROPERTIES POSITION_INDEPENDENT_CODE ON )
 
-if(NOT WIN32)
-  target_link_libraries(la ngcore)
-endif(NOT WIN32)
-
 install(FILES
   densemat.hpp linalg.hpp opti.hpp
   polynomial.hpp vector.hpp