Cross-compile OpenBLAS for Pi Zero

PiperOrigin-RevId: 166533251

2 files changed, 2 insertions, 74 deletions

diff --git a/third_party/toolchains/cpus/arm/CROSSTOOL.tpl b/third_party/toolchains/cpus/arm/CROSSTOOL.tpl
index 6753476c15..04e399bed1 100644
--- a/third_party/toolchains/cpus/arm/CROSSTOOL.tpl
+++ b/third_party/toolchains/cpus/arm/CROSSTOOL.tpl
@@ -77,8 +77,8 @@ toolchain {
   cxx_builtin_include_directory: "%{ARM_COMPILER_PATH}%/lib/gcc/arm-linux-gnueabihf/4.9.3/include-fixed"
   cxx_builtin_include_directory: "%{ARM_COMPILER_PATH}%/local_include"
   cxx_builtin_include_directory: "/usr/include"
-
-  cxx_flag: "-std=c++11"	
+  cxx_builtin_include_directory: "/workspace/toolchain/openblas/include/"
+  cxx_flag: "-std=c++11"
   # The cxx_builtin_include_directory directives don't seem to be adding these, so
   # explicitly set them as flags. There's a query to the Bazel team outstanding about
   # why this is necessary.
diff --git a/third_party/toolchains/cpus/arm/build_raspberry_pi.sh b/third_party/toolchains/cpus/arm/build_raspberry_pi.sh
deleted file mode 100755
index c9fe0bc771..0000000000
--- a/third_party/toolchains/cpus/arm/build_raspberry_pi.sh
+++ /dev/null
@@ -1,72 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2017 The TensorFlow Authors. All Rights Reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-# ==============================================================================
-set -e
-
-# By default this builds packages for the Pi Two and Three only, since the NEON support
-# this allows makes calculations many times faster. To support the Pi One or Zero, pass
-# PI_ONE as the first argument to the script, for example:
-# third_party/toolchains/cpus/arm/build_raspberry_pi.sh PI_ONE
-#
-# To install the cross-compilation support for Python this script needs on Ubuntu Trusty, run
-# something like these steps, after backing up your original /etc/apt/sources.list file:
-#
-# dpkg --add-architecture armhf
-# echo 'deb [arch=armhf] http://ports.ubuntu.com/ trusty main restricted universe multiverse' >> /etc/apt/sources.list.d/armhf.list
-# echo 'deb [arch=armhf] http://ports.ubuntu.com/ trusty-updates main restricted universe multiverse' >> /etc/apt/sources.list.d/armhf.list
-# echo 'deb [arch=armhf] http://ports.ubuntu.com/ trusty-security main restricted universe multiverse' >> /etc/apt/sources.list.d/armhf.list
-# echo 'deb [arch=armhf] http://ports.ubuntu.com/ trusty-backports main restricted universe multiverse' >> /etc/apt/sources.list.d/armhf.list
-# sed -i 's#deb http://archive.ubuntu.com/ubuntu/#deb [arch=amd64] http://archive.ubuntu.com/ubuntu/#g' /etc/apt/sources.list
-# apt-get update
-# apt-get install -y libpython-all-dev:armhf
-#
-# Make sure you have an up to date version of the Bazel build tool installed too.
-
-yes '' | ./configure
-
-if [[ $1 == "PI_ONE" ]]; then
-  PI_COPTS="--copt=-march=armv6 --copt=-mfpu=vfp"
-  echo "Building for the Pi One/Zero, with no NEON support"
-else
-  PI_COPTS='--copt=-march=armv7-a --copt=-mfpu=neon-vfpv4
-  --copt=-U__GCC_HAVE_SYNC_COMPARE_AND_SWAP_1
-  --copt=-U__GCC_HAVE_SYNC_COMPARE_AND_SWAP_2
-  --copt=-U__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8'
-  echo "Building for the Pi Two/Three, with NEON acceleration"
-fi
-
-bazel build -c opt ${PI_COPTS} \
-  --copt=-funsafe-math-optimizations --copt=-ftree-vectorize \
-  --copt=-fomit-frame-pointer --cpu=armeabi \
-  --crosstool_top=@local_config_arm_compiler//:toolchain \
-  --verbose_failures \
-  //tensorflow/tools/benchmark:benchmark_model \
-  //tensorflow/tools/pip_package:build_pip_package
-
-TMPDIR=$(mktemp -d -t tmp.XXXXXXXXXX)
-echo "Final outputs will go to ${TMPDIR}"
-
-# Build a universal wheel.
-BDIST_OPTS="--universal" \
-  bazel-bin/tensorflow/tools/pip_package/build_pip_package "${TMPDIR}"
-
-OLD_FN=$(ls "${TMPDIR}" | grep \.whl)
-SUB='s/tensorflow-([^-]+)-([^-]+)-.*/tensorflow-\1-\2-none-any.whl/; print'
-NEW_FN=$(echo "${OLD_FN}" | perl -ne "${SUB}")
-mv "${TMPDIR}/${OLD_FN}" "${TMPDIR}/${NEW_FN}"
-cp bazel-bin/tensorflow/tools/benchmark/benchmark_model "${TMPDIR}"
-
-echo "Output can be found here:"
-find "${TMPDIR}"