64-bit system need 32bit libstdc++.so.6 to run pnacl sdk clang

build/install-build-deps.sh

Index: build/install-build-deps.sh
diff --git a/build/install-build-deps.sh b/build/install-build-deps.sh
index 705d4c210455f36916be607d7fd0f32f0b472c70..b77e23a6d9f60543e471ef22474c2efcee72cbfa 100755
--- a/build/install-build-deps.sh
+++ b/build/install-build-deps.sh
@@ -70,10 +70,10 @@ dev_list="apache2.2-bin bison curl elfutils fakeroot flex g++ gperf
           $chromeos_dev_list"
 
 # 64-bit systems need a minimum set of 32-bit compat packages for the pre-built
-# NaCL binaries. These are always needed, regardless of whether or not we want
+# NaCl binaries. These are always needed, regardless of whether or not we want
 # the full 32-bit "cross-compile" support (--lib32).
 if [ "$(uname -m)" = "x86_64" ]; then
-  dev_list="${dev_list} libc6-i386 lib32gcc1"
+  dev_list="${dev_list} libc6-i386 lib32gcc1 lib32stdc++6"
 fi
 
 # Run-time libraries required by chromeos only