fix
diff --git a/toolchain_build/toolchain_build_pnacl.py b/toolchain_build/toolchain_build_pnacl.py
index 062dd2d..34b252f 100755
--- a/toolchain_build/toolchain_build_pnacl.py
+++ b/toolchain_build/toolchain_build_pnacl.py
@@ -194,7 +194,7 @@
configure_args.append('--host=' + host)
if TripleIsLinux(host) and not TripleIsX8664(host):
# Chrome clang defaults to 64-bit builds, even when run on 32-bit Linux.
- extra_cc_args = ['-m32']
+ extra_cc_args += ['-m32']
extra_cxx_args = list(extra_cc_args)