【发布时间】：2022-09-29 15:40:28
【问题描述】：
我有一个 Dockerfile 可以编译 opencv 很长一段时间。最近我决定尝试 buildkit（用于交叉编译）。但是，使用 buildkit 时，opencv 编译会失败。出现以下错误：
#9 130.0 [ 87%] Linking CXX shared library ../../lib/libopencv_imgcodecs.so
#9 130.5 [ 87%] Built target opencv_imgcodecs
#9 130.5 [ 87%] Generating src/moc_window_QT.cpp
#9 130.5 [ 87%] Generating qrc_window_QT.cpp
#9 130.5 standard input:0: Note: No relevant classes found. No output generated.
#9 130.5 RCC: Error in \'/opencv/modules/highgui/src/window_QT.qrc\': Cannot find file \'files_Qt/Milky/48/28.png\'
#9 130.5 make[2]: *** [modules/highgui/CMakeFiles/opencv_highgui.dir/build.make:78: modules/highgui/qrc_window_QT.cpp] Error 1
#9 130.5 make[1]: *** [CMakeFiles/Makefile2:1684: modules/highgui/CMakeFiles/opencv_highgui.dir/all] Error 2
#9 130.5 make: *** [Makefile:163: all] Error 2
我尝试在git clone 之后停止构建，以查看文件files_Qt/Milky/48/28.png 是否存在于容器中并且确实存在。此外，如果我从容器中的交互式 shell 启动编译过程，则编译过程成功。
所以似乎只有当它是 docker build 的一部分时编译才会失败。
有人知道有关 buildkit 如何工作的更多详细信息，以及这是否会对编译过程产生影响吗？
这是构建命令和 Dockerfile 的最小示例：
DOCKER_BUILDKIT=1 docker build --no-cache --progress=plain -t \"buildkit_error:latest\" -f Dockerfile .
FROM ubuntu:20.04
WORKDIR /
# Setup apt repositories
RUN \\
apt update && \\
apt install -y --no-install-recommends \\
wget \\
software-properties-common && \\
add-apt-repository ppa:deadsnakes/ppa && \\
apt install -y --fix-broken && \\
apt update && \\
apt upgrade -y && \\
apt dist-upgrade -y && \\
apt remove -y python3 && \\
apt clean && \\
apt autoremove -y && \\
apt autoclean -y
# Install apt packages
# ORDER ALPHABETICALLY!
RUN \\
apt install -y --no-install-recommends \\
build-essential \\
clang-10 \\
cmake \\
cpio \\
git \\
libdrm-dev \\
libcairo2-dev \\
libomp-10-dev \\
llvm-10-dev \\
openssh-client \\
pkg-config \\
python3.6-dev \\
python3.6-distutils\\
python3.6-minimal \\
python3-pip \\
qt5-default
# Install pip dependencies
# ORDER ALPHABETICALLY!
RUN python3.6 -m pip install --no-cache-dir \\
numpy==1.16.1 \\
setuptools==59.6.0 \\
wheel==0.37.1
RUN \\
ln -sf /usr/bin/python3.6 /usr/bin/python3 && \\
ln -sf /usr/bin/python3 /usr/bin/python
ENV opencv=3.4.3
RUN git clone --branch $opencv --depth 1 https://github.com/opencv/opencv.git
RUN ls -al /opencv/modules/highgui/src/files_Qt/Milky/48
# build opencv from source
RUN \\
mkdir opencv/build && cd opencv/build && cmake -DBUILD_TIFF=ON \\
-DCMAKE_C_COMPILER=clang-10 \\
-DCMAKE_CXX_COMPILER=clang++-10 \\
-DENABLE_FAST_MATH=ON \\
-DCMAKE_BUILD_TYPE=Release \\
-DBUILD_opencv_java=OFF \\
-DWITH_CUDA=OFF \\
-DENABLE_CXX11=ON \\
-DWITH_OPENGL=ON \\
-DWITH_OPENCL=ON \\
-DWITH_IPP=ON \\
-DWITH_TBB=ON \\
-DWITH_EIGEN=ON \\
-DWITH_V4L=OFF \\
-DWITH_GTK=ON \\
-DWITH_GTK_2_X=ON \\
-DBUILD_PERF_TESTS=OFF \\
-DBUILD_opencv_apps=OFF \\
-DBUILD_JAVA=OFF \\
-DBUILD_PROTOBUF=OFF \\
-DBUILD_PACKAGE=OFF \\
-DBUILD_TESTS=OFF \\
-DBUILD_opencv=OFF \\
-DBUILD_opencv_dnn=OFF \\
-DBUILD_opencv_java_bindings_generator=OFF \\
-DBUILD_opencv_shape=OFF \\
-DBUILD_opencv_stitching=OFF \\
-DBUILD_opencv_superres=OFF \\
-DBUILD_opencv_ts=OFF \\
-DBUILD_opencv_video=OFF \\
-DBUILD_opencv_videoio=OFF \\
-DBUILD_opencv_videostab=OFF \\
-DBUILD_opencv_world=OFF \\
-DBUILD_opencv_ml=OFF \\
-DBUILD_opencv_photo=OFF \\
-DWITH_1394=OFF \\
-DWITH_FFMPEG=OFF \\
-DWITH_GSTREAMER=OFF \\
-DWITH_IMGCODEC_HDR=OFF \\
-DWITH_IMGCODEC_PXM=OFF \\
-DWITH_IMGCODEC_SUNRASTER=OFF \\
-DWITH_JASPER=OFF \\
-DWITH_OPENCVAMDBLAS=OFF \\
-DWITH_OPENCVAMDFFT=OFF \\
-DWITH_OPENEXR=OFF \\
-DWITH_OPENNI=OFF \\
-DWITH_OPENNI2=OFF \\
-DWITH_OPENVX=OFF \\
-DWITH_VTK=OFF \\
-DWITH_V4L=OFF \\
-DWITH_QUIRC=OFF \\
-DWITH_QT=ON \\
-DBUILD_opencv_calib3d=ON \\
-DBUILD_opencv_core=ON \\
-DBUILD_opencv_python3=ON \\
-DBUILD_opencv_flann=ON \\
-DBUILD_opencv_python_binding_generator=ON \\
-DBUILD_opencv_highgui=ON \\
-DBUILD_opencv_imgcodecs=ON \\
-DBUILD_opencv_features2d=ON \\
-DBUILD_opencv_imgproc=ON \\
-DWITH_OPENMP=ON \\
-DWITH_PNG=ON \\
-DWITH_HALIDE=OFF .. && \\
make -j6 && make install
标签： docker opencv docker-buildkit