Set Installed File Permissions for Linux

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Here is a guide to set permissions for installed files on linux.

In your .pro file, change QMAKE_INSTALL_FILE and QMAKE_INSTALL_PROGRAM to the following:

QMAKE_INSTALL_FILE = install -m <permission octals> -p -o <user> -g <group> QMAKE_INSTALL_PROGRAM = install -m <permission octals> -p -o <user> -g <group>


  • <permissions octals> is the standard linux permissions octals (ex: 755).
  • <owner> is the owner of the file. This parameter can be ommited.
  • <group> is the group owner of the file. This parameter can also be ommited.

Here is an example implementation. In this example, I install my binary in the folder /opt/myApp and give it permissions 6755 with root as the owner and root as the group owner.

unix {

target.path = /opt/myApp
INSTALLS += target

QMAKE_INSTALL_FILE = install -m 6755 -p -o root -g root

QMAKE_INSTALL_PROGRAM = install -m 6755 -p -o root -g root