creating appimage using source code and linuxdeployqt

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i trying to create a appimage for my Linux system. Using qt-creator i have completed the programing and ran the app successfully . but when i am trying to make it appimage using linuxdeployQt i am facing some errors

linuxdeployqt 5 (commit 37631e5), build 631 built on 2019-01-25 22:47:58 UTC ERROR:
The host system is too new.
Please run on a system with a glibc version no newer than what comes with the oldest still-   
supported mainstream distribution, which currently is glibc 2.20. 
This is so that the resulting bundle will work on most still-supported Linux distributions.
For more information, please see
https://github.com/probonopd/linuxdeployqt/issues/340

i don't know what this issue is. when i visit the website, it is not clear also. So anyone familiar with this kind please put your help here.

2 Answers

It means that your glibc is too new.

That's correct, to work around this issue while using linuxdeployqt you have to choose as build environment an older system such as Centos 6 or Ubuntu 14.04.

As an alternative, you can use appimage-builder which allows producing AppImages on newer systems.

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