diff -ruN Coin3D-coin-a4ce638f43bd/CMakeLists.txt my/CMakeLists.txt
--- Coin3D-coin-a4ce638f43bd/CMakeLists.txt	2019-11-09 14:39:34.000000000 +0100
+++ my/CMakeLists.txt	2019-11-21 00:19:43.563521948 +0100
@@ -97,8 +97,8 @@
 
 report_prepare(
   COIN_BUILD_SHARED_LIBS
-  COIN_BUILD_TESTS 
-  COIN_BUILD_DOCUMENTATION 
+  COIN_BUILD_TESTS
+  COIN_BUILD_DOCUMENTATION
   COIN_BUILD_INTERNAL_DOCUMENTATION
   COIN_BUILD_DOCUMENTATION_MAN
   COIN_BUILD_DOCUMENTATION_QTHELP
@@ -107,29 +107,29 @@
   HAVE_VRML97
   COIN_HAVE_JAVASCRIPT
   HAVE_NODEKITS
-  HAVE_DRAGGERS 
-  HAVE_MANIPULATORS 
-  HAVE_SOUND 
+  HAVE_DRAGGERS
+  HAVE_MANIPULATORS
+  HAVE_SOUND
   HAVE_3DS_IMPORT_CAPABILITIES
   USE_EXTERNAL_EXPAT
-  USE_EXCEPTIONS 
-  USE_SUPERGLU 
-  FONTCONFIG_RUNTIME_LINKING   
-  FREETYPE_RUNTIME_LINKING     
-  LIBBZIP2_RUNTIME_LINKING     
-  OPENAL_RUNTIME_LINKING       
-  SIMAGE_RUNTIME_LINKING       
-  ZLIB_RUNTIME_LINKING         
-  GLU_RUNTIME_LINKING          
-  SPIDERMONKEY_RUNTIME_LINKING 
-  HAVE_MULTIPLE_VERSION 
+  USE_EXCEPTIONS
+  USE_SUPERGLU
+  FONTCONFIG_RUNTIME_LINKING
+  FREETYPE_RUNTIME_LINKING
+  LIBBZIP2_RUNTIME_LINKING
+  OPENAL_RUNTIME_LINKING
+  SIMAGE_RUNTIME_LINKING
+  ZLIB_RUNTIME_LINKING
+  GLU_RUNTIME_LINKING
+  SPIDERMONKEY_RUNTIME_LINKING
+  HAVE_MULTIPLE_VERSION
   IF_APPLE
-    COIN_BUILD_MAC_FRAMEWORK 
-    COIN_BUILD_MAC_X11 
-    COIN_BUILD_MAC_AGL 
+    COIN_BUILD_MAC_FRAMEWORK
+    COIN_BUILD_MAC_X11
+    COIN_BUILD_MAC_AGL
   IF_MSVC
     COIN_BUILD_MSVC_STATIC_RUNTIME
-    COIN_BUILD_SINGLE_LIB 
+    COIN_BUILD_SINGLE_LIB
     MSVC_VERSION
     COIN_BUILD_MSVC_MP
 )
@@ -141,8 +141,8 @@
     CMAKE_INSTALL_DATADIR
     CMAKE_INSTALL_FULL_DATADIR
     CMAKE_INSTALL_INCLUDEDIR
-    CMAKE_INSTALL_FULL_INCLUDEDIR 
-    CMAKE_INSTALL_DOCDIR 
+    CMAKE_INSTALL_FULL_INCLUDEDIR
+    CMAKE_INSTALL_DOCDIR
     CMAKE_INSTALL_FULL_DOCDIR
   )
 else()
@@ -165,7 +165,7 @@
   list(APPEND COIN_TARGET_LINK_LIBRARIES Boost::boost)
 endif()
 
-if(COIN_BUILD_MAC_X11)
+if(COIN_BUILD_MAC_X11 OR UNIX)
   find_package(X11 REQUIRED)
   # On Mac OS X, GLX is provided as a separate OpenGL implementation, different
   # from the standard OpenGL framework which provides support for GLUT and native
@@ -530,6 +530,7 @@
   endif()
   check_library_exists(dl dlopen "" HAVE_DL_LIB)
   if(HAVE_DL_LIB)
+    list(APPEND COIN_TARGET_LINK_LIBRARIES dl)
     check_include_file(dlfcn.h HAVE_DLFCN_H)
   endif()
   check_library_exists(dld shl_load "" HAVE_DLD_LIB)
@@ -815,4 +816,4 @@
 
 # ############################################################################
 # New CPACK section, please see the README file inside cpack.d directory.
-add_subdirectory(cpack.d)
+# not needed add_subdirectory(cpack.d)