Add ARM toolchain support.

libraries/fftw-3.2.2/nacl-fftw-3.2.2.sh

 #!/bin/bash
 # Copyright (c) 2011 The Native Client Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 #
 
 # nacl-fftw-3.2.2.sh
 #
 # usage:  nacl-fftw-3.2.2.sh
 #
@@ skipping 11 matching lines @@
   Banner "Configuring ${PACKAGE_NAME}"
   # Export the nacl tools.
   export CC=${NACLCC}
   export CXX=${NACLCXX}
   export AR=${NACLAR}
   export RANLIB=${NACLRANLIB}
   export PKG_CONFIG_PATH=${NACL_SDK_USR_LIB}/pkgconfig
   export PKG_CONFIG_LIBDIR=${NACL_SDK_USR_LIB}
   export PATH=${NACL_BIN_PATH}:${PATH};
   ChangeDir ${NACL_PACKAGES_REPOSITORY}/${PACKAGE_NAME}
-  if [ ${NACL_PACKAGES_BITSIZE} = "pnacl" ] ; then
+  if [ ${NACL_ARCH} = "pnacl" ] ; then
     extra=
   else
     extra="--enable-sse2"
   fi
 
   ./configure --prefix=${NACL_SDK_USR} --host=nacl ${extra}
 }
 
 
 CustomPackageInstall() {
   DefaultPreInstallStep
   DefaultDownloadStep
   DefaultExtractStep
   DefaultPatchStep
   CustomConfigureStep
   DefaultBuildStep
   DefaultInstallStep
   DefaultCleanUpStep
 }
 
 
 CustomPackageInstall
 exit 0