[incubator-mxnet] branch master updated: [MXNET-73] Add Armv6 ci build (#10172)

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marcoabreu pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-mxnet.git


The following commit(s) were added to refs/heads/master by this push:
     new d283c51  [MXNET-73] Add Armv6 ci build (#10172)
d283c51 is described below

commit d283c516bc97fa7c1ed18d2e32d28812b473979f
Author: Anton Chernov <me...@gmail.com>
AuthorDate: Thu Mar 22 17:04:15 2018 +0100

    [MXNET-73] Add Armv6 ci build (#10172)
    
    * Initial add for ARMv6
    
    * Fixed Armv6 build
    
    * Introduced workaround for fortran lib linking
    
    * Added comments to armv6 ci build
---
 CMakeLists.txt                   |  4 +++-
 Jenkinsfile                      |  8 ++++++++
 ci/docker/Dockerfile.build.armv6 | 40 ++++++++++++++++++++++++++++++++++++++++
 ci/docker/runtime_functions.sh   | 28 ++++++++++++++++++++++++++++
 4 files changed, 79 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 66732ff..e18c480 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -132,7 +132,9 @@ else(MSVC)
   endif()
 endif(MSVC)
 
-set(mxnet_LINKER_LIBS "")
+if(NOT mxnet_LINKER_LIBS)
+  set(mxnet_LINKER_LIBS "")
+endif(NOT mxnet_LINKER_LIBS)
 
 if(USE_GPROF)
   message(STATUS "Using GPROF")
diff --git a/Jenkinsfile b/Jenkinsfile
index 03c7fe8..f9e038f 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -338,6 +338,14 @@ try {
           sh "ci/build.py --build --platform armv7 /work/runtime_functions.sh build_armv7"
         }
       }
+    },
+    'Raspberry / ARMv6l':{
+      node('mxnetlinux-cpu') {
+        ws('workspace/build-raspberry-armv6') {
+          init_git()
+          sh "ci/build.py --build --platform armv6 /work/runtime_functions.sh build_armv6"
+        }
+      }
     }
   } // End of stage('Build')
 
diff --git a/ci/docker/Dockerfile.build.armv6 b/ci/docker/Dockerfile.build.armv6
new file mode 100755
index 0000000..4718462
--- /dev/null
+++ b/ci/docker/Dockerfile.build.armv6
@@ -0,0 +1,40 @@
+# -*- mode: dockerfile -*-
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+#
+# Dockerfile to build MXNet for ARMv6
+
+FROM dockcross/linux-armv6
+
+ENV ARCH armv6l
+ENV CC /usr/bin/arm-linux-gnueabihf-gcc
+ENV CXX /usr/bin/arm-linux-gnueabihf-g++
+ENV FC /usr/bin/arm-linux-gnueabihf-gfortran
+ENV HOSTCC gcc
+ENV TARGET ARMV6
+
+WORKDIR /work/deps
+
+# Build OpenBLAS
+ADD https://api.github.com/repos/xianyi/OpenBLAS/git/refs/tags/v0.2.9 openblas_version.json
+RUN git clone --recursive -b v0.2.9 https://github.com/xianyi/OpenBLAS.git && \
+    cd OpenBLAS && \
+    make -j$(nproc) && \
+    make PREFIX=$CROSS_ROOT install
+
+COPY runtime_functions.sh /work/
+WORKDIR /work/mxnet
diff --git a/ci/docker/runtime_functions.sh b/ci/docker/runtime_functions.sh
index f12772e..abb3702 100755
--- a/ci/docker/runtime_functions.sh
+++ b/ci/docker/runtime_functions.sh
@@ -73,6 +73,34 @@ build_jetson() {
     popd
 }
 
+build_armv6() {
+    set -ex
+    pushd .
+    cd /work/build
+
+    # Lapack functionality will be included and statically linked to openblas.
+    # But USE_LAPACK needs to be set to OFF, otherwise the main CMakeLists.txt
+    # file tries to add -llapack. Lapack functionality though, requires -lgfortran
+    # to be linked additionally.
+
+    cmake \
+        -DCMAKE_TOOLCHAIN_FILE=$CROSS_ROOT/Toolchain.cmake \
+        -DUSE_CUDA=OFF \
+        -DUSE_OPENCV=OFF \
+        -DUSE_SIGNAL_HANDLER=ON \
+        -DCMAKE_BUILD_TYPE=RelWithDebInfo \
+        -DUSE_MKL_IF_AVAILABLE=OFF \
+        -DUSE_LAPACK=OFF \
+        -Dmxnet_LINKER_LIBS=-lgfortran \
+        -G Ninja /work/mxnet
+    ninja
+    export MXNET_LIBRARY_PATH=`pwd`/libmxnet.so
+    cd /work/mxnet/python
+    python setup.py bdist_wheel --universal
+    cp dist/*.whl /work/build
+    popd
+}
+
 build_armv7() {
     set -ex
     pushd .

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