android – “/ system / bin / linker：没有这样的文件或目录”错误尝试编译TensorFlow

我正在尝试为运行the building script的Android编译te​​nsorflow-lite,但构建过程因此错误而停止：

/system/bin/linker: No such file or directory

我可以理解构建过程是如何工作的(compilation + linking)但我无法弄清楚为什么需要这个’/ system / bin / linker’.此链接器不存在于SDK或NDK文件夹中,并且它不存在于主机的文件夹树中(我使用Linux进行构建过程).

它看起来像Android文件结构的一部分,但构建过程不应该依赖于最终的系统结构.

我试图构建的元素是’schema_fbs’,它使用flatbuffers(第三方依赖)编译部分代码.我正在使用的完整句子是：

bazel build \
--cxxopt='--std=c++11' \
--crosstool_top=//external:android/crosstool \
--host_crosstool_top=@bazel_tools//tools/cpp:toolchain \
--cpu=armeabi-v7a \
--verbose_failures \
--subcommands \
//tensorflow/contrib/lite/schema:schema_fbs

它可能是由Bazel构建脚本中的测试用例引起的(我已经评论了我发现的所有测试),但为什么需要链接器呢？在编译过程中,我是否需要做一些事情来定义这个’system’文件夹？

笔记：

目标操作系统：Android

主机操作系统：Ubuntu 16.04

使用NDK：v16b(使用v17测试但不兼容)

完整的错误消息：

INFO: Analysed target //tensorflow/contrib/lite/schema:schema_fbs_srcs (0 packages loaded).
INFO: Found 1 target...
SUBCOMMAND: # //tensorflow/contrib/lite/schema:schema_fbs_srcs [action 'Generating flatbuffer files for schema_fbs_srcs: //tensorflow/contrib/lite/schema:schema_fbs_srcs']
(cd /home/user/.cache/bazel/_bazel_user/73606864f5ec4cce18dd83a6cbcd2bc2/execroot/org_tensorflow && \
  exec env - \
    LD_LIBRARY_PATH=/usr/local/lib:/home/user/Libraries/llvm-4.0.0.src/build/lib: \
    PATH=/home/user/Software/git-sizer:/home/user/Android/Sdk/platform-tools:/home/user/anaconda3/bin:/home/user/Libraries/llvm-4.0.0.src/build/bin:/home/user/bin:/home/user/repo/caffe/build/install/lib:/home/user/Software/cmake-3.10.3-Linux-x86_64/bin:::::/home/user/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin \
  /bin/bash -c 'source external/bazel_tools/tools/genrule/genrule-setup.sh; for f in tensorflow/contrib/lite/schema/schema.fbs; do bazel-out/armeabi-v7a-opt/bin/external/flatbuffers/flatc --no-union-value-namespacing --gen-object-api  -c -o bazel-out/armeabi-v7a-opt/genfiles/tensorflow/contrib/lite/schema $f; done')
ERROR: /home/user/Repositories/git/tensorflow/tensorflow/contrib/lite/schema/BUILD:57:1: Generating flatbuffer files for schema_fbs_srcs: //tensorflow/contrib/lite/schema:schema_fbs_srcs failed (Exit 255): bash failed: error executing command 
  (cd /home/user/.cache/bazel/_bazel_user/73606864f5ec4cce18dd83a6cbcd2bc2/execroot/org_tensorflow && \
  exec env - \
    LD_LIBRARY_PATH=/usr/local/lib:/home/user/Libraries/llvm-4.0.0.src/build/lib: \
    PATH=/home/user/Software/git-sizer:/home/user/Android/Sdk/platform-tools:/home/user/anaconda3/bin:/home/user/Libraries/llvm-4.0.0.src/build/bin:/home/user/bin:/home/user/repo/caffe/build/install/lib:/home/user/Software/cmake-3.10.3-Linux-x86_64/bin:::::/home/user/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin \
  /bin/bash -c 'source external/bazel_tools/tools/genrule/genrule-setup.sh; for f in tensorflow/contrib/lite/schema/schema.fbs; do bazel-out/armeabi-v7a-opt/bin/external/flatbuffers/flatc --no-union-value-namespacing --gen-object-api  -c -o bazel-out/armeabi-v7a-opt/genfiles/tensorflow/contrib/lite/schema $f; done')
/system/bin/linker: No such file or directory
Target //tensorflow/contrib/lite/schema:schema_fbs_srcs failed to build
INFO: Elapsed time: 0.572s, Critical Path: 0.02s
INFO: 0 processes.
FAILED: Build did NOT complete successfully

解决方法:

TensorFlow Lite AAR也可以使用以下方式构建：

bazel build --cxxopt='--std=c++11' -c opt --fat_apk_cpu=x86,x86_64,arm64-v8a,armeabi-v7a tensorflow/contrib/lite/java:tensorflow-lite

并且您必须确保运行./configure并让它为您配置SDK和NDK.

标签：android,bazel,c,cross-compiling,tensorflow-lite
来源： https://codeday.me/bug/20190910/1798771.html