diff --git a/src/libcgo/Makefile b/src/libcgo/Makefile
index 380bc596e9d..259799c92f6 100755
--- a/src/libcgo/Makefile
+++ b/src/libcgo/Makefile
@@ -16,9 +16,10 @@ OFILES=\
 HOST_CFLAGS_386=-m32
 HOST_CFLAGS_amd64=-m64
 
-LDFLAGS_linux=-shared -lpthread -lm
 LDFLAGS_darwin=-dynamiclib -Wl,-undefined,dynamic_lookup /usr/lib/libpthread.dylib
-LDFLAGS_freebsd=-pthread -shared -lm
+LDFLAGS_freebsd=-shared -lm -pthread
+LDFLAGS_linux=-shared -lm -lpthread
+LDFLAGS_nacl=-shared -lm -lpthread
 LDFLAGS_windows=-shared -lm -mthreads
 
 %.o: %.c
diff --git a/src/libcgo/nacl_386.c b/src/libcgo/nacl_386.c
index 32d8629849b..d674aca1df6 100644
--- a/src/libcgo/nacl_386.c
+++ b/src/libcgo/nacl_386.c
@@ -1 +1,17 @@
-/* unimplemented */
+// Copyright 2010 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "libcgo.h"
+
+void
+initcgo(void)
+{
+}
+
+void
+libcgo_sys_thread_start(ThreadStart *ts)
+{
+	// unimplemented
+	*(int*)0 = 0;
+}
diff --git a/src/pkg/os/dir_nacl.go b/src/pkg/os/dir_nacl.go
index e76b2bea09c..42cc88a8a77 100644
--- a/src/pkg/os/dir_nacl.go
+++ b/src/pkg/os/dir_nacl.go
@@ -57,7 +57,7 @@ func (file *File) Readdirnames(count int) (names []string, err Error) {
 				continue
 			}
 			bytes := (*[10000]byte)(unsafe.Pointer(&dirent.Name[0]))
-			var name = string(bytes[0:clen(bytes)])
+			var name = string(bytes[0:clen(bytes[0:])])
 			if name == "." || name == ".." { // Useless names
 				continue
 			}