Set Installed File Permissions for Linux

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>

where:

• <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
}