diff --git a/src/Makevars b/src/Makevars
index 2b0e308..d0892ec 100644
--- a/src/Makevars
+++ b/src/Makevars
@@ -43,7 +43,7 @@ userLibrary: $(USERLIB) $(USERLIBST)
 	rm $(USERLIB) $(USERLIBST)
 
 $(USERLIB): $(OBJECTS)
-	$(SHLIB_CXXLD) -o $(USERLIB) $^ $(SHLIB_CXXLDFLAGS) $(ALL_LIBS)
+	$(SHLIB_CXXLD) -o $(USERLIB) $^ $(SHLIB_CXXLDFLAGS) $(LDFLAGS) $(ALL_LIBS)
 	@if test -e "/usr/bin/install_name_tool"; then /usr/bin/install_name_tool -id $(R_PACKAGE_DIR)/lib$(R_ARCH)/$(USERLIB) $(USERLIB); fi
 
 $(USERLIBST): $(OBJECTS)
diff --git a/src/tools/RInsideEnvVars.r b/src/tools/RInsideEnvVars.r
index 3d67109..236a72a 100755
--- a/src/tools/RInsideEnvVars.r
+++ b/src/tools/RInsideEnvVars.r
@@ -2,7 +2,7 @@
 #
 # This owes a lot to littler.R  in the littler sources
 
-ExcludeVars <- c("R_SESSION_TMPDIR","R_HISTFILE")
+ExcludeVars <- c("R_SESSION_TMPDIR","R_HISTFILE","R_LIBRARY_DIR","R_LIBS","R_PACKAGE_DIR")
 IncludeVars <- Sys.getenv()
 IncludeVars <- IncludeVars[grep("^R_",names(IncludeVars),perl=TRUE)]
 if (.Platform$OS.type == "windows") {