diff --git a/libgo/Makefile.am b/libgo/Makefile.am
index 77ab95afdcb..c153ae22227 100644
--- a/libgo/Makefile.am
+++ b/libgo/Makefile.am
@@ -1997,7 +1997,7 @@ GOTESTFLAGS =
 CHECK = \
 	GC="$(GOC) $(GOCFLAGS) $($(subst /,_,$@)_GOCFLAGS) -L `${PWD_COMMAND}` -L `${PWD_COMMAND}`/.libs"; \
 	export GC; \
-	GOLIBS="$(MATH_LIBS) $(NET_LIBS)"; \
+	GOLIBS="$(MATH_LIBS) $(NET_LIBS) $(LIBS)"; \
 	export GOLIBS; \
 	RUNTESTFLAGS="$(RUNTESTFLAGS)"; \
 	export RUNTESTFLAGS; \
diff --git a/libgo/Makefile.in b/libgo/Makefile.in
index 15f027f15e7..c74c4f62403 100644
--- a/libgo/Makefile.in
+++ b/libgo/Makefile.in
@@ -2114,7 +2114,7 @@ GOTESTFLAGS =
 CHECK = \
 	GC="$(GOC) $(GOCFLAGS) $($(subst /,_,$@)_GOCFLAGS) -L `${PWD_COMMAND}` -L `${PWD_COMMAND}`/.libs"; \
 	export GC; \
-	GOLIBS="$(MATH_LIBS) $(NET_LIBS)"; \
+	GOLIBS="$(MATH_LIBS) $(NET_LIBS) $(LIBS)"; \
 	export GOLIBS; \
 	RUNTESTFLAGS="$(RUNTESTFLAGS)"; \
 	export RUNTESTFLAGS; \
diff --git a/libgo/configure b/libgo/configure
index f4d7c82bf12..e1d37dc2d7b 100755
--- a/libgo/configure
+++ b/libgo/configure
@@ -14211,6 +14211,62 @@ ac_res=$ac_cv_search_sched_yield
 if test "$ac_res" != no; then :
   test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
 
+fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing nanosleep" >&5
+$as_echo_n "checking for library containing nanosleep... " >&6; }
+if test "${ac_cv_search_nanosleep+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_func_search_save_LIBS=$LIBS
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char nanosleep ();
+int
+main ()
+{
+return nanosleep ();
+  ;
+  return 0;
+}
+_ACEOF
+for ac_lib in '' rt; do
+  if test -z "$ac_lib"; then
+    ac_res="none required"
+  else
+    ac_res=-l$ac_lib
+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+  fi
+  if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_search_nanosleep=$ac_res
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext
+  if test "${ac_cv_search_nanosleep+set}" = set; then :
+  break
+fi
+done
+if test "${ac_cv_search_nanosleep+set}" = set; then :
+
+else
+  ac_cv_search_nanosleep=no
+fi
+rm conftest.$ac_ext
+LIBS=$ac_func_search_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_nanosleep" >&5
+$as_echo "$ac_cv_search_nanosleep" >&6; }
+ac_res=$ac_cv_search_nanosleep
+if test "$ac_res" != no; then :
+  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
+
 fi
 
 
diff --git a/libgo/configure.ac b/libgo/configure.ac
index ff0b7bdb6d9..58cc045734c 100644
--- a/libgo/configure.ac
+++ b/libgo/configure.ac
@@ -413,8 +413,9 @@ PTHREAD_LIBS=
 AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS=-lpthread)
 AC_SUBST(PTHREAD_LIBS)
 
-dnl Test if -lrt is required for sched_yield.
+dnl Test if -lrt is required for sched_yield and/or nanosleep.
 AC_SEARCH_LIBS([sched_yield], [rt])
+AC_SEARCH_LIBS([nanosleep], [rt])
 
 AC_C_BIGENDIAN
 
diff --git a/libgo/mksysinfo.sh b/libgo/mksysinfo.sh
index e8ab1eb27ac..11bcb257a94 100755
--- a/libgo/mksysinfo.sh
+++ b/libgo/mksysinfo.sh
@@ -309,6 +309,13 @@ for m in SOCK_CLOEXEC SOCK_NONBLOCK; do
   fi
 done
 
+# The syscall package requires AF_LOCAL.
+if ! grep '^const AF_LOCAL ' ${OUT} >/dev/null 2>&1; then
+  if grep '^const AF_UNIX ' ${OUT} >/dev/null 2>&1; then
+    echo "const AF_LOCAL = AF_UNIX" >> ${OUT}
+  fi
+fi
+
 # pathconf constants.
 grep '^const __PC' gen-sysinfo.go |
   sed -e 's/^\(const \)__\(PC[^= ]*\)\(.*\)$/\1\2 = __\2/' >> ${OUT}