diff --git a/Makefile.pre.in b/Makefile.pre.in
index 790d974..88fc444 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -2019,6 +2019,10 @@ Python/thread.o: @THREADHEADERS@ $(srcdir)/Python/condvar.h
 .PHONY: build_all_generate_profile build_all_merge_profile
 .PHONY: gdbhooks
 
+# Serialize targets which may create <prefix>/lib
+libinstall:  altbininstall
+libainstall: altbininstall
+
 # IF YOU PUT ANYTHING HERE IT WILL GO AWAY
 # Local Variables:
 # mode: makefile