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无法加载库“ gs”：libgs.so：无法打开共享对象文件：无此文件或目录

[英]Unable to load library 'gs': libgs.so: cannot open shared object file: No such file or directory

 原文  2013-07-15 11:49:11  7   3    java/ imagemagick/ ghostscript/ ghost4j

问题描述

I have installed ghostscript of 64 bit on my 64 bit linux machine. 我已经在64位linux机器上安装了64位的ghostscript。 I am using ghost4j-0.5.0.jar to convert pdf files to tiff files. 我正在使用ghost4j-0.5.0.jar将pdf文件转换为tiff文件。 I have written a java program which will convert pdf files to tiff files. 我写了一个Java程序，它将pdf文件转换为tiff文件。 This is working perfectly fine on Windows but when i thought of moving this to linux machine i am getting the below error. 这在Windows上运行正常，但是当我想到将其移至linux计算机时，出现以下错误。

"Exception in thread "main" java.lang.UnsatisfiedLinkError: Unable to load library 'gs': libgs.so: cannot open shared object file: No such file or directory" “线程“主”中的异常java.lang.UnsatisfiedLinkError：无法加载库'gs'：libgs.so：无法打开共享对象文件：没有这样的文件或目录”

I checked lib folder and could not find libgs.so file in the lib folder. 我检查了lib文件夹，但在lib文件夹中找不到libgs.so文件。 I am not sure where to get that file. 我不确定从哪里获取该文件。

Can anyone please help me on this ? 有人可以帮我吗？

3 个解决方案

解决方案1
 4  2014-03-28 19:21:50

I feel a little guilty posting this here since it is probably better served on ServerFault or one of the Linux boards and the question is over 6 months old but I had been banging my head against the wall all day and finally have found a solution to this problem and I figured someone else might benefit from this down the road. 我觉得有点内this，因为它可能最好在ServerFault或Linux板上之一上使用，并且这个问题已经存在了6个月以上，但是我整天都在碰壁，终于找到了解决方案问题，我想其他人可能会从中受益。

Systems: Windows 7 and CentOS 6.5 系统： Windows 7和CentOS 6.5

Using: Ghostscript 9.14 使用： Ghostscript 9.14

A little backstory: 一些背景故事：

Like the OP I had been running a ghostscript program on Windows to convert PDFs to a series of images. 像OP一样，我一直在Windows上运行ghostscript程序，以将PDF转换为一系列图像。 This worked fine until I needed to switch over to Linux and run the program and about 5% of the PDFs I needed to convert came up with error cannot decode code stream . 直到我需要切换到Linux并运行程序，并且我需要转换的大约5％的PDF出现error cannot decode code stream时，此方法error cannot decode code stream 。 I realized that I was using a newer version of ghostscript on Windows. 我意识到我在Windows上使用的是更新版本的ghostscript。 (9.14 on Windows compared to 8.70 on CentOS due to installing through yum). （由于通过yum安装，Windows上为9.14，而CentOS上为8.70）。

I removed the old version with yum remove ghostscript . 我用yum remove ghostscript删除了旧版本。 Next, I found the easiest way to install the newest version of Ghostscript is download from here and compile. 接下来，我发现从此处下载并编译即可安装最新版本的Ghostscript的最简单方法。 Since I removed the previous version of ghostscript with yum I had to update the link in usr/bin to point to usr/local/bin/gs with ln -s /usr/local/bin/gs /usr/bin/gs . 自从我用yum删除了上一个版本的ghostscript以来，我不得不用ln -s /usr/local/bin/gs /usr/bin/gs更新usr/bin的链接以指向usr/local/bin/gs ln -s /usr/local/bin/gs /usr/bin/gs 。 With everything in place, so I thought, I attempted to run my program and then bam, error! 一切就绪后，我想，我试图运行程序，然后运行，出错！

Solving the problem: 解决问题：

So now I was getting the error: 所以现在我得到了错误：

Exception in thread "main" java.lang.UnsatisfiedLinkError: Unable to load library 'gs': libgs.so: cannot open shared object file: No such file or directory

I came across a post here that said to get the necessary libgs.so I needed to go back and rebuild the source as a shared library with the command make so . 我在这里遇到了一篇文章，说要获得必要的libgs.so所以我需要回过头来，使用make so命令将源重建为共享库。 I did so and then I took the libgs.so.9.14 file under sobin directory in the ghostscript folder and copied it to /usr/lib . 我这样做，然后我把libgs.so.9.14文件下sobin目录中的文件夹的Ghostscript和其复制到/usr/lib 。 Under that directory I made a symbolic link to libgs.so using the command ln -s /usr/lib/libgs.so.9.14 /usr/lib/libgs.so . 在该目录下，我使用ln -s /usr/lib/libgs.so.9.14 /usr/lib/libgs.so命令建立了指向libgs.so的符号链接。

Once that was done I needed to update my ld_library_path but found when I did so the change wasn't global so I found a Unix & Linux post on how to set the global lib path. 完成此操作后，我需要更新ld_library_path但发现这样做时更改不是全局的，因此我找到了有关如何设置全局lib路径的Unix＆Linux帖子 。 Basically to do so you need to go to add a .conf file in /etc/ld.so.conf.d/ with the path to the file. 基本上，您需要在/etc/ld.so.conf.d/添加一个.conf文件以及该文件的路径。 I did so using vi /etc/ld.so.conf.d/libgs.conf and added /usr/lib/libgs.so to the file. 我使用vi /etc/ld.so.conf.d/libgs.conf做到了，并将/usr/lib/libgs.so添加到文件中。 Lastly I ran ldconfig so save the changes. 最后，我运行了ldconfig所以保存更改。

TLDR: TLDR：

  1. Download the latest version of Ghostscript from source: wget http://downloads.ghostscript.com/public/ghostscript-9.14.tar.gz 从源代码下载最新版本的Ghostscript： wget http://downloads.ghostscript.com/public/ghostscript-9.14.tar.gz

  2. Unpack the tar: tar -xzf ghostscript-9.14.tar.gz 解压缩tar： tar -xzf ghostscript-9.14.tar.gz

  3. cd ghostscript-9.14

  4. ./configure

  5. make <-- You might be able to skip and go to make so , I did it in this order so I will leave it like this. make <-您可能可以跳过并执行make so我按此顺序进行了操作，因此我将其保留为这样。

  6. make install

  7. make so

  8. If you removed a previous version with yum ln -s /usr/local/bin/gs /usr/bin/gs 如果使用yum ln -s /usr/local/bin/gs /usr/bin/gs 删除了先前版本

  9. cp ghostscript-9.14/sobin/libgs.so.9.14 /usr/lib

  10. ln -s /usr/lib/libgs.so.9.14 /usr/lib/libgs.so

  11. vi /etc/ld.so.conf.d/libgs.conf

  12. In the new libgs.conf file: /usr/lib/libgs.so and save with esc , : , wq . 在新的libgs.conf文件： /usr/lib/libgs.so与ESC保存，：， wq 。

  13. ldconfig and done. ldconfig完成。

  14. Run your conversion program. 运行您的转换程序。

Hopefully this helped and wasn't too confusing. 希望这会有所帮助，并且不会造成混乱。 I'm not a linux expert (yet) so I may be doing a little more work than necessary with the above commands but I wanted to be thorough. 我还不是Linux专家，因此使用上述命令可能会做一些不必要的工作，但我想更加详尽。

解决方案2
 2  2013-10-11 20:07:12

I just had this issue on a linux VM. 我刚在Linux VM上遇到这个问题。 I was able to solve it by installing ghostscript on the system. 我可以通过在系统上安装ghostscript来解决它。 I just used the command: 我只是使用了命令： 

sudo yum install ghostscript

Hope that helps! 希望有帮助！

解决方案3
 0  2018-10-10 04:36:15

make soinstall将创建必需的库以及可执行文件，如https://www.ghostscript.com/doc/current/Install.htm#Shared_object中所述

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