raspberry pi4 darknet with NNPACK エラー

Question

私は卒業研究でdeeplearningを用いて物体検出をしようとしているものです。

このサイトを参考にdarknet NNPACKを実行しようとしました。

しかし、コマンドプロンプトから$NINJA_PATH/ninjaと打つと以下のようなエラーが発生します。

pi@raspberrypi:~/NNPACK-darknet $ $NINJA_PATH/ninja
[1/82] LINK bin/convolution-benchmark
FAILED: /home/pi/NNPACK-darknet/bin/convolution-benchmark
g++ -pthread  -o /home/pi/NNPACK-darknet/bin/convolution-benchmark /home/pi/NNPACK-darknet/build/bench/convolution.c.o /home/pi/NNPACK-darknet/build/bench/median.c.o /home/pi/NNPACK-darknet/build/bench/memread.c.o /home/pi/NNPACK-darknet/lib/libnnpack.a /home/pi/NNPACK-darknet/lib/libpthreadpool.a -lrt
/usr/bin/ld: /home/pi/NNPACK-darknet/lib/libpthreadpool.a(pthreads.c.o): in function `pthreadpool_create':
/home/pi/NNPACK-darknet/deps/pthreadpool/src/pthreads.c:258: undefined reference to `pthreadpool_allocate'
/usr/bin/ld: /home/pi/NNPACK-darknet/lib/libpthreadpool.a(pthreads.c.o): in function `pthreadpool_destroy':
/home/pi/NNPACK-darknet/deps/pthreadpool/src/pthreads.c:459: undefined reference to `pthreadpool_deallocate'
/usr/bin/ld: /home/pi/NNPACK-darknet/deps/pthreadpool/src/pthreads.c:459: undefined reference to `pthreadpool_deallocate'
/usr/bin/ld: /home/pi/NNPACK-darknet/bin/convolution-benchmark: internal symbol `pthreadpool_deallocate' isn't defined
/usr/bin/ld: 最終リンクに失敗しました: bad value
collect2: error: ld returned 1 exit status
[2/82] LINK bin/fully-connected-benchmark
FAILED: /home/pi/NNPACK-darknet/bin/fully-connected-benchmark
g++ -pthread  -o /home/pi/NNPACK-darknet/bin/fully-connected-benchmark /home/pi/NNPACK-darknet/build/bench/fully-connected.c.o /home/pi/NNPACK-darknet/build/bench/median.c.o /home/pi/NNPACK-darknet/build/bench/memread.c.o /home/pi/NNPACK-darknet/lib/libnnpack.a /home/pi/NNPACK-darknet/lib/libpthreadpool.a -lrt
/usr/bin/ld: /home/pi/NNPACK-darknet/lib/libpthreadpool.a(pthreads.c.o): in function `pthreadpool_create':
/home/pi/NNPACK-darknet/deps/pthreadpool/src/pthreads.c:258: undefined reference to `pthreadpool_allocate'
/usr/bin/ld: /home/pi/NNPACK-darknet/lib/libpthreadpool.a(pthreads.c.o): in function `pthreadpool_destroy':
/home/pi/NNPACK-darknet/deps/pthreadpool/src/pthreads.c:459: undefined reference to `pthreadpool_deallocate'
/usr/bin/ld: /home/pi/NNPACK-darknet/deps/pthreadpool/src/pthreads.c:459: undefined reference to `pthreadpool_deallocate'
/usr/bin/ld: /home/pi/NNPACK-darknet/bin/fully-connected-benchmark: internal symbol `pthreadpool_deallocate' isn't defined
/usr/bin/ld: 最終リンクに失敗しました: bad value
collect2: error: ld returned 1 exit status
[3/82] LINK bin/transform-benchmark
FAILED: /home/pi/NNPACK-darknet/bin/transform-benchmark
g++ -pthread  -o /home/pi/NNPACK-darknet/bin/transform-benchmark /home/pi/NNPACK-darknet/build/bench/transform.c.o /home/pi/NNPACK-darknet/build/bench/median.c.o /home/pi/NNPACK-darknet/build/bench/memread.c.o /home/pi/NNPACK-darknet/lib/libnnpack.a /home/pi/NNPACK-darknet/lib/libpthreadpool.a -lrt
/usr/bin/ld: /home/pi/NNPACK-darknet/lib/libpthreadpool.a(pthreads.c.o): in function `pthreadpool_create':
/home/pi/NNPACK-darknet/deps/pthreadpool/src/pthreads.c:258: undefined reference to `pthreadpool_allocate'
/usr/bin/ld: /home/pi/NNPACK-darknet/lib/libpthreadpool.a(pthreads.c.o): in function `pthreadpool_destroy':
/home/pi/NNPACK-darknet/deps/pthreadpool/src/pthreads.c:459: undefined reference to `pthreadpool_deallocate'
/usr/bin/ld: /home/pi/NNPACK-darknet/deps/pthreadpool/src/pthreads.c:459: undefined reference to `pthreadpool_deallocate'
/usr/bin/ld: /home/pi/NNPACK-darknet/bin/transform-benchmark: internal symbol `pthreadpool_deallocate' isn't defined
/usr/bin/ld: 最終リンクに失敗しました: bad value
collect2: error: ld returned 1 exit status
[4/82] LINK bin/relu-benchmark
FAILED: /home/pi/NNPACK-darknet/bin/relu-benchmark
g++ -pthread  -o /home/pi/NNPACK-darknet/bin/relu-benchmark /home/pi/NNPACK-darknet/build/bench/relu.c.o /home/pi/NNPACK-darknet/build/bench/median.c.o /home/pi/NNPACK-darknet/build/bench/memread.c.o /home/pi/NNPACK-darknet/lib/libnnpack.a /home/pi/NNPACK-darknet/lib/libpthreadpool.a -lrt
/usr/bin/ld: /home/pi/NNPACK-darknet/lib/libpthreadpool.a(pthreads.c.o): in function `pthreadpool_create':
/home/pi/NNPACK-darknet/deps/pthreadpool/src/pthreads.c:258: undefined reference to `pthreadpool_allocate'
/usr/bin/ld: /home/pi/NNPACK-darknet/lib/libpthreadpool.a(pthreads.c.o): in function `pthreadpool_destroy':
/home/pi/NNPACK-darknet/deps/pthreadpool/src/pthreads.c:459: undefined reference to `pthreadpool_deallocate'
/usr/bin/ld: /home/pi/NNPACK-darknet/deps/pthreadpool/src/pthreads.c:459: undefined reference to `pthreadpool_deallocate'
/usr/bin/ld: /home/pi/NNPACK-darknet/bin/relu-benchmark: internal symbol `pthreadpool_deallocate' isn't defined
/usr/bin/ld: 最終リンクに失敗しました: bad value
collect2: error: ld returned 1 exit status
[5/82] LINK bin/pooling-benchmark
FAILED: /home/pi/NNPACK-darknet/bin/pooling-benchmark
g++ -pthread  -o /home/pi/NNPACK-darknet/bin/pooling-benchmark /home/pi/NNPACK-darknet/build/bench/pooling.c.o /home/pi/NNPACK-darknet/build/bench/median.c.o /home/pi/NNPACK-darknet/build/bench/memread.c.o /home/pi/NNPACK-darknet/lib/libnnpack.a /home/pi/NNPACK-darknet/lib/libpthreadpool.a -lrt
/usr/bin/ld: /home/pi/NNPACK-darknet/lib/libpthreadpool.a(pthreads.c.o): in function `pthreadpool_create':
/home/pi/NNPACK-darknet/deps/pthreadpool/src/pthreads.c:258: undefined reference to `pthreadpool_allocate'
/usr/bin/ld: /home/pi/NNPACK-darknet/lib/libpthreadpool.a(pthreads.c.o): in function `pthreadpool_destroy':
/home/pi/NNPACK-darknet/deps/pthreadpool/src/pthreads.c:459: undefined reference to `pthreadpool_deallocate'
/usr/bin/ld: /home/pi/NNPACK-darknet/deps/pthreadpool/src/pthreads.c:459: undefined reference to `pthreadpool_deallocate'
/usr/bin/ld: /home/pi/NNPACK-darknet/bin/pooling-benchmark: internal symbol `pthreadpool_deallocate' isn't defined
/usr/bin/ld: 最終リンクに失敗しました: bad value
collect2: error: ld returned 1 exit status
[6/82] LINK bin/convolution-output-alexnet-test
FAILED: /home/pi/NNPACK-darknet/bin/convolution-output-alexnet-test
g++ -pthread  -o /home/pi/NNPACK-darknet/bin/convolution-output-alexnet-test /home/pi/NNPACK-darknet/build/src/ref/convolution-output.c.o /home/pi/NNPACK-darknet/build/src/ref/convolution-input-gradient.c.o /home/pi/NNPACK-darknet/build/src/ref/convolution-kernel.c.o /home/pi/NNPACK-darknet/build/src/ref/fully-connected-output.c.o /home/pi/NNPACK-darknet/build/src/ref/max-pooling-output.c.o /home/pi/NNPACK-darknet/build/src/ref/softmax-output.c.o /home/pi/NNPACK-darknet/build/src/ref/relu-output.c.o /home/pi/NNPACK-darknet/build/src/ref/relu-input-gradient.c.o /home/pi/NNPACK-darknet/build/test/convolution-output/alexnet.cc.o /home/pi/NNPACK-darknet/lib/libnnpack.a /home/pi/NNPACK-darknet/lib/libpthreadpool.a /home/pi/NNPACK-darknet/lib/libgoogletest-core.a -lrt
/usr/bin/ld: /home/pi/NNPACK-darknet/lib/libpthreadpool.a(pthreads.c.o): in function `pthreadpool_create':
/home/pi/NNPACK-darknet/deps/pthreadpool/src/pthreads.c:258: undefined reference to `pthreadpool_allocate'
/usr/bin/ld: /home/pi/NNPACK-darknet/lib/libpthreadpool.a(pthreads.c.o): in function `pthreadpool_destroy':
/home/pi/NNPACK-darknet/deps/pthreadpool/src/pthreads.c:459: undefined reference to `pthreadpool_deallocate'
/usr/bin/ld: /home/pi/NNPACK-darknet/deps/pthreadpool/src/pthreads.c:459: undefined reference to `pthreadpool_deallocate'
/usr/bin/ld: /home/pi/NNPACK-darknet/bin/convolution-output-alexnet-test: internal symbol `pthreadpool_deallocate' isn't defined
/usr/bin/ld: 最終リンクに失敗しました: bad value
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.

何故でしょうか？エラーの内容に最終リンクに失敗しましたやbenchmarkなどと書いてありますが、何が書いてあるのかさっぱりわかりません。

いろんなサイトを見ても同じ方法でできている人がいます。OSももう一度入れ直して実行してみましたが、できませんでした。

使用環境
raspberry pi4 4GB
OS:raspbian buster 20200213

学習済みモデル
yolov2-tiny-voc

Answer 1

cmakeにする必要があります。以前はconfuですが、ビルドの方法はcmakeにした。
今公式のビルドの手順はこんな感じです。

cd build
cmake -G Ninja ..
ninja

僕も同じエラーをこんなように解決しました。

参考、NNPACKの作者もコメントがあります。
GitHubスレッド