setup.py install 失败

[liuyuancv]

很棒的工作！
在本地配置的时候，运行python setup.py install出现以下问题：
-- looking for PCL_COMMON
-- looking for PCL_KDTREE
-- looking for PCL_OCTREE
-- looking for PCL_SEARCH
-- looking for PCL_IO
-- looking for PCL_SAMPLE_CONSENSUS
-- looking for PCL_FILTERS
-- looking for PCL_GEOMETRY
-- looking for PCL_FEATURES
-- looking for PCL_SEGMENTATION
-- looking for PCL_SURFACE
-- looking for PCL_REGISTRATION
-- looking for PCL_RECOGNITION
-- looking for PCL_KEYPOINTS
-- looking for PCL_VISUALIZATION
-- looking for PCL_PEOPLE
-- looking for PCL_OUTOFCORE
-- looking for PCL_TRACKING
-- looking for PCL_APPS
-- Could NOT find PCL_APPS (missing: PCL_APPS_LIBRARY)
-- looking for PCL_MODELER
-- looking for PCL_IN_HAND_SCANNER
-- looking for PCL_POINT_CLOUD_EDITOR
-- Configuring done
-- Generating done
-- Build files have been written to: /home/ACSC/segmentation/build/temp.linux-x86_64-3.7
make[2]: *** No rule to make target '/usr/lib/x86_64-linux-gnu/libproj.so', needed by '../lib.linux-x86_64-3.7/segmentation_ext.so'. Stop.
CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/segmentation_ext.dir/all' failed
make[1]: *** [CMakeFiles/segmentation_ext.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
make: *** [all] Error 2

-- Could NOT find PCL_APPS (missing: PCL_APPS_LIBRARY) 这个具体是啥原因呢

[HViktorTsoi]

您好!

首先请先确定您已经安装了Eigen 3.2.5 以及 PCL 1.8

看这个报错,是缺少libproj.so这个库

首先检查一下在/usr/lib/x86_64-linux-gnu/下边是否有libproj.so.9这个库文件,如果有的话

sudo ln -s /usr/lib/x86_64-linux-gnu/libproj.so.9 /usr/lib/x86_64-linux-gnu/libproj.so

如果没有,尝试

sudo apt install libproj-dev

如果还有问题请在issue里更新, 我会及时跟进

[liuyuancv]

感谢您的回复，解决完libproj.so这个问题后，出现了/usr/bin/ld: cannot find -lvtkproj4这样的问题
我参照https://github.com/PointCloudLibrary/pcl/issues/1594解决了，显示成功安装：
Scanning dependencies of target segmentation_ext
[ 50%] Building CXX object CMakeFiles/segmentation_ext.dir/segmentation.cpp.o
In file included from /home/ACSC/segmentation/segmentation.hpp:14:0,
from /home/ACSC/segmentation/segmentation.cpp:11:
/usr/include/pcl-1.7/pcl/visualization/cloud_viewer.h:202:14: warning: ‘template class std::auto_ptr’ is deprecated [-Wdeprecated-declarations]
std::auto_ptr<CloudViewer_impl> impl_;
^
In file included from /usr/include/c++/5/memory:81:0,
from /home/ACSC/segmentation/pybind11/include/pybind11/detail/common.h:159,
from /home/ACSC/segmentation/pybind11/include/pybind11/pytypes.h:12,
from /home/ACSC/segmentation/pybind11/include/pybind11/cast.h:13,
from /home/ACSC/segmentation/pybind11/include/pybind11/attr.h:13,
from /home/ACSC/segmentation/pybind11/include/pybind11/pybind11.h:44,
from /home/ACSC/segmentation/segmentation.cpp:6:
/usr/include/c++/5/bits/unique_ptr.h:49:28: note: declared here
template class auto_ptr;
^
[100%] Linking CXX shared module ../lib.linux-x86_64-3.7/segmentation_ext.so
[100%] Built target segmentation_ext
creating build/bdist.linux-x86_64
creating build/bdist.linux-x86_64/egg
copying build/lib.linux-x86_64-3.7/segmentation_ext.so -> build/bdist.linux-x86_64/egg
creating build/bdist.linux-x86_64/egg/EGG-INFO
copying segmentation_ext.egg-info/PKG-INFO -> build/bdist.linux-x86_64/egg/EGG-INFO
copying segmentation_ext.egg-info/SOURCES.txt -> build/bdist.linux-x86_64/egg/EGG-INFO
copying segmentation_ext.egg-info/dependency_links.txt -> build/bdist.linux-x86_64/egg/EGG-INFO
copying segmentation_ext.egg-info/not-zip-safe -> build/bdist.linux-x86_64/egg/EGG-INFO
copying segmentation_ext.egg-info/top_level.txt -> build/bdist.linux-x86_64/egg/EGG-INFO
writing build/bdist.linux-x86_64/egg/EGG-INFO/native_libs.txt
creating 'dist/segmentation_ext-0.0.1-py3.7-linux-x86_64.egg' and adding 'build/bdist.linux-x86_64/egg' to it
removing 'build/bdist.linux-x86_64/egg' (and everything under it)
Processing segmentation_ext-0.0.1-py3.7-linux-x86_64.egg
removing '/opt/conda/lib/python3.7/site-packages/segmentation_ext-0.0.1-py3.7-linux-x86_64.egg' (and everything under it)
creating /opt/conda/lib/python3.7/site-packages/segmentation_ext-0.0.1-py3.7-linux-x86_64.egg
Extracting segmentation_ext-0.0.1-py3.7-linux-x86_64.egg to /opt/conda/lib/python3.7/site-packages
segmentation-ext 0.0.1 is already the active version in easy-install.pth

Installed /opt/conda/lib/python3.7/site-packages/segmentation_ext-0.0.1-py3.7-linux-x86_64.egg
Processing dependencies for segmentation-ext==0.0.1
Finished processing dependencies for segmentation-ext==0.0.1

但是 在导入模块的时候出现以下问题：

import segmentation_ext
Traceback (most recent call last):
File "", line 1, in
ImportError: dynamic module does not define module export function (PyInit_segmentation_ext)

请问是什么原因呢

[HViktorTsoi]

这个是由于编译segmentation ext的时候和运行calibration.py的时候使用了不一致的python环境(即使您这边activate的是同样的环境, 由于conda的某些配置, pybind11找到的也是不一致的环境, 这个问题在python3.x的环境下最有可能发生)

目前这个问题最快的解决办法是切换到python2.7, 在2.7下编译segmentaion_ext并在2.7下运行calibraiton

在python3下的解决办法晚些再恢复您,因为我这边自己的python3都是可以正常运行的,需要找一个环境来复现这个bug

[HViktorTsoi]

您好, 找到问题了,这是一个由您本机的环境,PCL,Boost, conda,以及pybind11耦合在一起导致的及其复杂的bug.... 问题的表现就是在python3环境下编译segmentation_ext的时候, 无法找到正确的python解释器版本.

如果您想使用python3的话, 目前一个不太优雅的解决办法:

1. 首先确保当前所在的conda环境是最终要编译segmentation_ext并运行calibration.py的环境

2. 在命令行输入以下代码,

python -c "from sysconfig import get_paths;print(get_paths()['include'])"

它会输出一个路径, 类似/opt/conda/include/python3.7这样的,具体的输出要看您的环境. 复制这个路径.

3. 在segmentaion/CMakeList.txt的第5行下边加这一句代码:

include_directories(第2步复制的路径)

比如 include_directories(/opt/conda/include/python3.7), 具体的内容要看您第2步的输出.

然后保存.

4. 重新运行

python setup.py install

编译并安装segmentation_ext插件.

如果仍然使用python2.7, 则不需要做更改.

[liuyuancv]

感谢感谢，终于调通了

[HViktorTsoi]

您好, 找到问题了,这是一个由您本机的环境,PCL,Boost, conda,以及pybind11耦合在一起导致的及其复杂的bug.... 问题的表现就是在python3环境下编译segmentation_ext的时候, 无法找到正确的python解释器版本.

如果您想使用python3的话, 目前一个不太优雅的解决办法:

1. 首先确保当前所在的conda环境是最终要编译segmentation_ext并运行calibration.py的环境
2. 在命令行输入以下代码,

python -c "from sysconfig import get_paths;print(get_paths()['include'])"

它会输出一个路径, 类似/opt/conda/include/python3.7这样的,具体的输出要看您的环境. 复制这个路径.

3. 在segmentaion/CMakeList.txt的第5行下边加这一句代码:

include_directories(第2步复制的路径)

比如 include_directories(/opt/conda/include/python3.7), 具体的内容要看您第2步的输出.

然后保存.

4. 重新运行

python setup.py install

编译并安装segmentation_ext插件.

如果仍然使用python2.7, 则不需要做更改.

Another a little bit hacky solution:

1. First, sudo mv /usr/include/python2.7 /usr/include/python2.7.keep
2. Then, complie the segmentation extension
3. Last, sudo mv /usr/include/python2.7.keep /usr/include/python2.7

Reference: koide3/fast_gicp#66 (comment)