参照readme->PC端调试->编译ncnn 失败

[chenrenxue]

参照readme,在PC端进行编译。步骤如下：
1.下载源码并更新子模块
2.编译protobuf 通过
3. 编译ncnn
cd ../3rdparty/src/ncnn
mkdir build
cd build
cmake .. -G "Visual Studio 16 2019" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=%cd%/install -DProtobuf_INCLUDE_DIR=E:\hawk-skys\mtcnn_ncnn\mtcnn_ncnn\3rdparty\include -DProtobuf_LIBRARIES=E:\hawk-skys\mtcnn_ncnn\mtcnn_ncnn\3rdparty\lib\libprotobuf.lib -DProtobuf_PROTOC_EXECUTABLE=E:\hawk-skys\mtcnn_ncnn\mtcnn_ncnn\3rdparty\bin\protoc.exe

出错信息如下：
E:\hawk-skys\mtcnn_ncnn\mtcnn_ncnn\3rdparty\src\ncnn\build>cmake .. -G "Visual Studio 16 2019" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=%cd%/install -DProtobuf_INCLUDE_DIR=E:\hawk-skys\mtcnn_ncnn\mtcnn_ncnn\3rdparty\include -DProtobuf_LIBRARIES=E:\hawk-skys\mtcnn_ncnn\mtcnn_ncnn\3rdparty\lib\libprotobuf.lib -DProtobuf_PROTOC_EXECUTABLE=E:\hawk-skys\mtcnn_ncnn\mtcnn_ncnn\3rdparty\bin\protoc.exe
-- CMAKE_INSTALL_PREFIX = E:\hawk-skys\mtcnn_ncnn\mtcnn_ncnn\3rdparty\src\ncnn\build/install
-- Target arch: x86
-- OpenCV library: C:/Users/Administrator/Downloads/opencv/build
-- version: 3.4.10
-- libraries: opencv_world
-- include path: C:/Users/Administrator/Downloads/opencv/build/include;C:/Users/Administrator/Downloads/opencv/build/include/opencv
CMake Error at C:/Program Files/CMake/share/cmake-3.17/Modules/FindProtobuf.cmake:469 (file):
file STRINGS file
"E:/hawk-skys/mtcnn_ncnn/mtcnn_ncnn/3rdparty/include/google/protobuf/stubs/common.h"
cannot be read.
Call Stack (most recent call first):
tools/caffe/CMakeLists.txt:2 (find_package)

CMake Error at C:/Program Files/CMake/share/cmake-3.17/Modules/FindProtobuf.cmake:475 (math):
math cannot parse the expression: " / 1000000": syntax error, unexpected
exp_DIVIDE (2).
Call Stack (most recent call first):
tools/caffe/CMakeLists.txt:2 (find_package)

CMake Error at C:/Program Files/CMake/share/cmake-3.17/Modules/FindProtobuf.cmake:476 (math):
math cannot parse the expression: " / 1000 % 1000": syntax error,
unexpected exp_DIVIDE (2).
Call Stack (most recent call first):
tools/caffe/CMakeLists.txt:2 (find_package)

CMake Error at C:/Program Files/CMake/share/cmake-3.17/Modules/FindProtobuf.cmake:477 (math):
math cannot parse the expression: " % 1000": syntax error, unexpected
exp_MOD (2).
Call Stack (most recent call first):
tools/caffe/CMakeLists.txt:2 (find_package)

CMake Error at C:/Program Files/CMake/share/cmake-3.17/Modules/FindProtobuf.cmake:469 (file):
file STRINGS file
"E:/hawk-skys/mtcnn_ncnn/mtcnn_ncnn/3rdparty/include/google/protobuf/stubs/common.h"
cannot be read.
Call Stack (most recent call first):
tools/onnx/CMakeLists.txt:2 (find_package)

CMake Error at C:/Program Files/CMake/share/cmake-3.17/Modules/FindProtobuf.cmake:475 (math):
math cannot parse the expression: " / 1000000": syntax error, unexpected
exp_DIVIDE (2).
Call Stack (most recent call first):
tools/onnx/CMakeLists.txt:2 (find_package)

CMake Error at C:/Program Files/CMake/share/cmake-3.17/Modules/FindProtobuf.cmake:476 (math):
math cannot parse the expression: " / 1000 % 1000": syntax error,
unexpected exp_DIVIDE (2).
Call Stack (most recent call first):
tools/onnx/CMakeLists.txt:2 (find_package)

CMake Error at C:/Program Files/CMake/share/cmake-3.17/Modules/FindProtobuf.cmake:477 (math):
math cannot parse the expression: " % 1000": syntax error, unexpected
exp_MOD (2).
Call Stack (most recent call first):
tools/onnx/CMakeLists.txt:2 (find_package)

CMake Warning at tools/quantize/CMakeLists.txt:26 (message):
OpenCV not found, quantize tools won't be built

-- Configuring incomplete, errors occurred!
See also "E:/hawk-skys/mtcnn_ncnn/mtcnn_ncnn/3rdparty/src/ncnn/build/CMakeFiles/CMakeOutput.log".

[chenrenxue]

3rdparty/include 下只有Openvc 文件夹，没有google文件夹