From NetBSD:
Force proper LDFLAGS for MODULE, as cmake doesn't set rpath for these
Index: plugins/3d/vrml/CMakeLists.txt
--- plugins/3d/vrml/CMakeLists.txt.orig
+++ plugins/3d/vrml/CMakeLists.txt
@@ -76,6 +76,9 @@ if( APPLE )
     )
 endif()
 
+set_property(TARGET s3d_plugin_vrml APPEND_STRING
+       PROPERTY LINK_FLAGS " $ENV{LDFLAGS}")
+
 install( TARGETS
     s3d_plugin_vrml
     DESTINATION ${KICAD_USER_PLUGIN}/3d
