LD_LIBRARY_PATH尝试运行Qt应用程序时失败 [英] LD_LIBRARY_PATH failing while trying to run Qt app

问题描述

我想在Linux上使用基于indt动态库的Qt 5应用程序.总之，脚本会将可执行文件和其他相关文件(包括lib文件夹中的所有必需.so文件)复制到所需的目标位置，并且调用gksudo的脚本将作为应用程序的调用者.

I want to run a Qt 5 based application usind dynamic libraries on Linux. In summary, a script will copy the executable and other relevant files, including all required .so inside a lib folder, to the desired destination and a script calling gksudo will work as caller to the app.

到现在为止，一切正常，直到我调用可执行脚本:该应用程序未运行.当我要求使用sudo运行时，它告诉我缺少库(Qt5SerialPort ...).在实际的可执行文件上运行ldd时，我发现该应用程序不是从lib文件夹中获取所需的库，而是从一些明显的硬编码路径中获取

Till now everything works fine till I call the executable script: the app doesn't run. When I ask to run with sudo, it tells me that a library (Qt5SerialPort...) is missing. Running ldd over the actual executable I discover that the app is getting the required libs not from within the lib folder, but some apparent hard-coded paths.

我尝试使用qt.conf解决此问题，但未成功.请注意此处，看来qt.conf实际上不应该以这种方式工作.我决定咨询 Qt文档，使用LD_LIBRARY_PATH告诉链接器在哪里可以找到库，因为我已经在使用脚本来运行该应用了.因此，最后的摘要脚本代码是

I tried to solve this by using qt.conf but got no success. As note here, it would seem qt.conf isn't actually supposed to work this way. Consulting the Qt documentation, I decided to use LD_LIBRARY_PATH to tell the linker where to find the libs since I was already using a script to run the app anyway. So the final, summarized script code is

#!/bin/sh
LD_LIBRARY_PATH=lib/
export LD_LIBRARY_PATH
sudo ldconfig #sometimes  sudo /sbin/ldconfig -v
gksudo "$INSPATH/myApp" #or sudo instead

问题在于它仍然无法正常工作.当我调用echo $LD_LIBRARY_PATH时，我可以看到该变量已被正确编辑，但是当我调用运行行(使用sudo)时，它一直告诉我找不到lib.

Problem is that it is still not working. When I call echo $LD_LIBRARY_PATH, I can see the variable was properly edited, but when I call the run line (with sudo), it keeps telling me that lib wasn't found.

我想念什么?

推荐答案

sudo未通过LD_LIBRARY_PATH:

$ LD_LIBRARY_PATH=lib/
$ export LD_LIBRARY_PATH
$ env | grep LD_LIBRARY_PATH
LD_LIBRARY_PATH=lib/
$ sudo env | grep LD_LIBRARY_PATH

您可以将其设置为以root身份运行的命令:

You can set it for the command run as root:

$ sudo env LD_LIBRARY_PATH=/lib env | grep LD_LIBRARY_PATH
SUDO_COMMAND=/usr/bin/env LD_LIBRARY_PATH=/lib env
LD_LIBRARY_PATH=/lib

您想要类似的东西

sudo env LD_LIBRARY_PATH=/lib "$INSPATH/myApp"

一如既往，请小心sudo！

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