输入错误：libGL。所以1： 无法打开共享对象文件：导入OCC时没有此类文件或目录

Question

我有一个Django应用程序，它被部署到Amazon Elastic Beanstalk（在64位AmazonLinux2/3.0.3上运行的Python 3.7）。我已经安装了anaconda和pythonoc-core包，方法是在中创建一个10_anaconda.config文件夹。

10_蟒蛇。配置；

commands:
  00_download_conda:
    command: 'wget https://repo.anaconda.com/archive/Anaconda3-2020.02-Linux-x86_64.sh'
  01_install_conda:
    command: 'bash Anaconda3-2020.02-Linux-x86_64.sh -b -f -p /anaconda'
  02_conda_install_pythonocc: 
    command: '/anaconda/bin/conda install -y -c dlr-sc pythonocc-core=7.4.0'

然后，我在我的一个应用程序中创建了一个文件夹，并创建了一个init。py和cadLoader。将文件复制到该文件夹中。我已将anaconda路径添加到\uu init\uuuu。py，它位于cad文件夹中；

import sys
sys.path.append('/anaconda/lib/python3.7/site-packages')

我已经将导入行添加到cadLoader。py用于尝试；

import os
from OCC.Extend.DataExchange import read_stl_file
from OCC.Display.SimpleGui import init_display
from OCC.Core.GProp import GProp_GProps
from OCC.Extend.DataExchange import read_step_file
from OCC.Extend.DataExchange import read_iges_file
from OCC.Core.Bnd import Bnd_Box
from OCC.Core.BRepMesh import BRepMesh_IncrementalMesh
from OCC.Core.BRepBndLib import brepbndlib_Add
from OCC.Core.BRepGProp import brepgprop_VolumeProperties

当我将其部署到Elastic Beanstalk时，我得到了下面的错误行。

from data.modellib.cad.cadLoader import CADLoader
File "/var/app/current/data/modellib/cad/cadLoader.py", line 2, in <module>
from OCC.Extend.DataExchange import read_stl_file
File "/anaconda/lib/python3.7/site-packages/OCC/Extend/DataExchange.py", line 32, in <module>
from OCC.Core.XCAFDoc import (XCAFDoc_DocumentTool_ShapeTool,
File "/anaconda/lib/python3.7/site-packages/OCC/Core/XCAFDoc.py", line 18, in <module>
from . import _XCAFDoc
ImportError: libGL.so.1: cannot open shared object file: No such file or directory

根据这个问题，我添加了一个。安装libGL的配置文件如下：

packages:
  yum:
    mesa-libGL : []
    mesa-libGL-devel : []

为了解决ZLIB_1.2.9版本未找到的错误，我添加了如下配置文件。

commands:
    00_download_zlib:
        command: 'wget https://github.com/madler/zlib/archive/v1.2.9.tar.gz'
    01_open_zlib:
        command: 'tar xzvf v1.2.9.tar.gz'
    02_into_zlib:
        command: 'cd zlib-1.2.9'
    03_make_zlib:
        command: 'make'
    04_make_install_zlib:
        command: 'make install'
    05_libz_so:
        command: 'ln -fs /usr/local/lib/libz.so.1.2.9 /lib64/libz.so'
    06_libz_so_1:
        command: 'ln -fs /usr/local/lib/libz.so.1.2.9 /lib64/libz.so.1'

但是由于执行了make命令，我的部署失败了。这是我的错误消息：

Unhandled exception during build: Command 03_make_zlib failed
Traceback (most recent call last):
  File "/opt/aws/bin/cfn-init", line 171, in <module>
    worklog.build(metadata, configSets)
  File "/usr/lib/python2.7/site-packages/cfnbootstrap/construction.py", line 129, in build
    Contractor(metadata).build(configSets, self)
  File "/usr/lib/python2.7/site-packages/cfnbootstrap/construction.py", line 530, in build
    self.run_config(config, worklog)
  File "/usr/lib/python2.7/site-packages/cfnbootstrap/construction.py", line 542, in run_config
    CloudFormationCarpenter(config, self._auth_config).build(worklog)
  File "/usr/lib/python2.7/site-packages/cfnbootstrap/construction.py", line 260, in build
    changes['commands'] = CommandTool().apply(self._config.commands)
  File "/usr/lib/python2.7/site-packages/cfnbootstrap/command_tool.py", line 117, in apply
    raise ToolError(u"Command %s failed" % name)
ToolError: Command 03_make_zlib failed

如何解决此问题并在应用程序中使用OCC软件包？




Answer 1

/lib64/libz.so.1：未找到版本ZLIB_1.2.9

Amazon Linux 2提供了1.2.7版：

Name        : zlib
Arch        : i686
Version     : 1.2.7
Release     : 18.amzn2
Size        : 91 k
Repo        : amzn2-core/2/x86_64
Summary     : The compression and decompression library
URL         : http://www.zlib.net/
License     : zlib and Boost
Description : Zlib is a general-purpose, patent-free, lossless data compression
            : library which is used by many different programs.

您可以尝试手动将zlib升级到1.2.9，例如以root身份执行以下步骤（如果这些步骤有效，您可以通过ebextensions实现自动化）：

wget https://github.com/madler/zlib/archive/v1.2.9.tar.gz
tar xzvf v1.2.9.tar.gz
cd zlib-1.2.9
./configure
make
make install

ln -fs /usr/local/lib/libz.so.1.2.9 /lib64/libz.so
ln -fs /usr/local/lib/libz.so.1.2.9 /lib64/libz.so.1

这必须仔细测试，因为手动升级可能会破坏东西。这里有一些其他升级选项。

commands:
    00_download_zlib:
        command: |
            wget https://github.com/madler/zlib/archive/v1.2.9.tar.gz
            tar xzvf v1.2.9.tar.gz
            cd zlib-1.2.9
            ./configure
            make
            make install
            ln -fs /usr/local/lib/libz.so.1.2.9 /lib64/libz.so
            ln -fs /usr/local/lib/libz.so.1.2.9 /lib64/libz.so.1