--- a/build
+++ b/build
@@ -126,8 +126,8 @@ cd ..
 
 #Using -output-obj for dynamic library (moved here so static build doesn't pick it up!)
 echo ***MAKING DYNAMIC LIBRARY WITH -output-obj
-echo $ocamlfind ocamlopt $camlpackages -output-obj -o lib${libname}.$dllname $wrapperos $camllibs $camlpackcmxa $camlcmx
-$ocamlfind ocamlopt $camlpackages -output-obj -o lib${libname}.$dllname $wrapperos $camllibs $camlpackcmxa $camlcmx
+echo $ocamlfind ocamlopt $camlpackages -output-obj -o lib${libname}.$dllname -runtime-variant _pic $wrapperos $camllibs $camlpackcmxa $camlcmx
+$ocamlfind ocamlopt $camlpackages -output-obj -o lib${libname}.$dllname -runtime-variant _pic $wrapperos $camllibs $camlpackcmxa $camlcmx
 
 #Build an example executable, with dynamic .so
 echo ***BUILD example executable with dynamic .so