单目总捕获编译过程错误: Makefile:83:目标'CMakeFiles/mylib.dir/all‘的配方失败

Question

我正在尝试使用这个repo：

https://github.com/CMU-Perceptual-Computing-Lab/MonocularTotalCapture

以下是我安装的包：

ffmpeg
Python 2.7.12 (with TensorFlow 1.5.0, OpenCV, Matplotlib, packages installed with pip3)
openCV 4.2.0
cmake = 3.5.1
OpenCV 2.4.13 (compiled from source with CUDA 9.0, CUDNN 7.0)
Ceres-Solver 1.13.0 (with SuiteSparse)
OpenGL, GLUT, GLEW
libigl https://github.com/libigl/libigl
wget
OpenPose
eigen3, version 3.3.7
Boost version: 1.58.0
GNU 5.4.0

不幸的是，我在最后得到了一个错误，我不知道如何修复。

-- Build files have been written to: /home/ziom/Scrivania/MonocularTotalCapture/FitAdam/build

mario@ziom-Z87-HD3:/home/ziom/Scrivania/MonocularTotalCapture/FitAdam/build# make -j12

/home/ziom/Scrivania/MonocularTotalCapture/FitAdam/src/AdamFastCost.cpp: In member function ‘void AdamFullCost::SparseRegress(const Eigen::SparseMatrix<double, 0>&, const double*, const double*, const double*, const double*, double*, double*, double*, double*) const’:
/home/ziom/Scrivania/MonocularTotalCapture/FitAdam/src/AdamFastCost.cpp:1200:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int ic = 0; ic < total_vertex.size(); ic++)
^
/home/ziom/Scrivania/MonocularTotalCapture/FitAdam/src/AdamFastCost.cpp:1225:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int ic = 0; ic < total_vertex.size(); ic++)
^
CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/mylib.dir/all' failed
make[1]: *** [CMakeFiles/MYLIB.dir/all] Errore 2
Makefile:83: recipe for target 'CMakeFiles/mylib.dir/all' failed
make: *** [all] Errore 2

Answer 1

我开始在评论中输入对此的回应，但它太长了……所以我只做一个答案。

你得到的显然是两个警告，但你却失败了，出现了两个错误。这就是-Werror所做的。现在，您对-Wno-error所做的操作应该是有效的，但是如果后面跟着-Werror，那么它可能会被覆盖。例如，如果我和gcc构建了一个简单的程序，如下所示：

gcc -Wno-error -Werror test.c

-Werror命令已覆盖-Wno-error命令。我刚刚看了那个项目的CMakeLists.txt文件，没有看到任何提到-Werror的地方。因为默认情况下它是关闭的，所以它一定在那里的某个地方。下面是来自该项目的CMakeLists.txt文件的一段代码：

set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wpedantic -Wall -Wextra")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")

我在想，可以为${OpenMP_C_FLAGS}或${OpenMP_CXX_Flags}设置-Werror。要测试这一点，可以使用cmake的message函数。在CMAKE_CXX_FLAGS赋值后添加以下行：

message("CFlags: ${CMAKE_C_FLAGS} CXXFlags: ${CMAKE_CXX_FLAGS}")

我的理论是你会在那里的某个地方找到一个-Werror。如果是这种情况，只需在CMakeLists.txt中的这两行(8和10)的末尾抛出-Wno-error：

set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS} -Wno-error")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS} -Wno-error")

跟踪-Wno-error将覆盖其中的任何-Werror。可能有一个更纯粹的cmake解决方案来处理这个问题，但我不是cmake专家。