diff -up glibc-2.27.20180720/nptl/Makefile.0034~ glibc-2.27.20180720/nptl/Makefile
--- glibc-2.27.20180720/nptl/Makefile.0034~	2018-07-20 02:29:28.763982849 +0200
+++ glibc-2.27.20180720/nptl/Makefile	2018-07-20 02:33:04.128058315 +0200
@@ -623,14 +623,18 @@ $(addprefix $(objpfx), \
     $(tests) $(tests-internal) $(xtests) $(test-srcs))): \
 	$(objpfx)libpthread.so
 $(objpfx)tst-unload: $(libdl)
-# $(objpfx)../libc.so is used instead of $(common-objpfx)libc.so,
+# $(objpfx)linklibc.so is used instead of $(common-objpfx)libc.so,
 # since otherwise libpthread.so comes before libc.so when linking.
 $(addprefix $(objpfx), $(tests-reverse)): \
-  $(objpfx)../libc.so $(objpfx)libpthread.so
-$(objpfx)../libc.so: $(common-objpfx)libc.so ;
+  $(objpfx)linklibc.so $(objpfx)libpthread.so
+$(objpfx)linklibc.so: $(common-objpfx)libc.so ;
 $(addprefix $(objpfx),$(tests-static) $(xtests-static)): $(objpfx)libpthread.a
 
 $(objpfx)tst-atfork2.out: $(objpfx)tst-atfork2mod.so
+
+$(objpfx)linklibc.so: $(common-objpfx)libc.so
+	ln -s ../libc.so $@
+generated += libclink.so
 else
 $(addprefix $(objpfx),$(tests) $(test-srcs)): $(objpfx)libpthread.a
 endif