Use existing installation folder (using installer)
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I have previously installed a number of versions of Qt to my Windows machine. These are in C:\Qt.
I just wanted to add 5.15.10 to my installations and downloaded the installer. However, when I run the installer and leave the default installation folder as C:\Qt it complains that the directory "already exists and contains an installation" and won't let me proceed. Well, yes, of course it already exists and contains an installation, but I want to add another, different installation to it!
I'm sure I have done this in the past. What am I doing wrong?
BTW I do realise I can download the individual Qt release and I guess can add it to the folder myself if I want but shouldn't I be able to use the Installer?
EDIT:
So I did download the individual release and installed that. It wanted to install a new Qt Creator too and I didn't have any strong objection - it's been a while since I updated - so I let it. But now, if I try to create a project I can't use any Qt version less than 5.12. I still have to use 5.9 for a couple of months at least - possibly longer for some legacy support. This is annoying. -
I have previously installed a number of versions of Qt to my Windows machine. These are in C:\Qt.
I just wanted to add 5.15.10 to my installations and downloaded the installer. However, when I run the installer and leave the default installation folder as C:\Qt it complains that the directory "already exists and contains an installation" and won't let me proceed. Well, yes, of course it already exists and contains an installation, but I want to add another, different installation to it!
I'm sure I have done this in the past. What am I doing wrong?
BTW I do realise I can download the individual Qt release and I guess can add it to the folder myself if I want but shouldn't I be able to use the Installer?
EDIT:
So I did download the individual release and installed that. It wanted to install a new Qt Creator too and I didn't have any strong objection - it's been a while since I updated - so I let it. But now, if I try to create a project I can't use any Qt version less than 5.12. I still have to use 5.9 for a couple of months at least - possibly longer for some legacy support. This is annoying.@Bob64 So it turns out that I should have run the MaintenanceTool from my existing Qt installation folder. I haven't had to do this for a while and the installer I downloaded from the Qt site looked to me like my recollection of the maintenance tool so I got confused between the tools.
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Ah, that was also the solution for command line install! To be clear:
./qt-online-installer-linux-x64-online.run --root <rootpath> install <package>only works for the first install. After that you have to use the installed Maintenance Tool, in the same way:
<rootpath>/MaintenanceTool install <package2>