[Qt-interest] redistribute QT application for Windows

[Nikos Chantziaras]

On 04/21/2010 02:23 PM, Serge wrote:
> Hello,
>
> i need to redistribute QT application, built in Visual Studio 2005.
> can i add to the folder with application VC runtime libraries:
> msvcr80.dll
> msvcp80.dll
> will i break some license agreement, providing these 2 libraries
> together with my program?
>
> Or i need to provide redistributable package vcredist_x86.exe from
> microsoft instead to avoid problems with license?
>
> Thank you!

That might be duplicating what the user already has on his system. 
Also, if you put those DLLs in your app's folder, and Microsoft issues a 
security update for the system-wide DLLs through Windows Update, your 
app will stay buggy since it's using your bundled DLLs and not the 
system global, updated DLLs.

Silently installing vcredist_x86.exe (it should have such a "silent" 
option) is the best way.  It will only install the DLLs if they're not 
already there, or if they're old and outdated, and it will not replace 
them if they're newer.