CODEWITHSUNDEEP
c++windowsqtdll
Jack
Jack

Reputation: 16724

How to do I with missing dlls like msvcp100.dll, msvcp100.dll?

How do I deal with this situation where the user's machine may not have dll like msvcp100.dll, msvcp100.dll? I don't want to my software not install on user's machine because this kind of error. I've been thinking in either find a tool and copy every single needed dll to the executable file run or try build a static version of Qt (may have sort of same result, in the end). I've seen applications that doesn't provide those dlls and it's up to user to get them, install etc. It may be a issue for those users, finding the right dll matching version and all. I'd like to avoid it.

How is this usually solved in a real world application?

Upvotes: 0

Views: 641

Answers (3)

Vladimir Bershov
Vladimir Bershov

Reputation: 2832

Deployment of Qt apps is an uneasy issue. One should understand that you need to redistribute a compiler's dlls, as well as Qt dlls. For the msvc 2010 compiler you may just put the msvcp100.dll and msvcr100.dll files near your executable file.
As for Qt, the easiest way for windows deployment is to use the windeployqt command prompt util.

Update. How is this usually solved in real applications?
There is no fully automatic tools, which could determine all the dependencies, because the deployment of applications is a complex task. For example, you application can depend on many things such as libraries dlls, compiler's dlls, registry keys, drivers, environment variables, computer reboot requirement, ActiveX/COM components, other installed applications, etc...
But there are tools that can help you in this matter. They can be configured once for target project and then work all the time. This is called Build Automation, another similar concept is a Continuous Integration.
As for the creation installation packages for end users, there is a lot of tools such as Nullsoft Scriptable Install System, Inno Setup, Qt Installer Framework, WiX, etc...
List of installation software.

Upvotes: 2

Felipe Angelo
Felipe Angelo

Reputation: 63

the installer script, put a command to download the dll that the application needs to run, and in the application source code, put it to use the dll's ONLY in the folder where it is running If you are using the NSI installer, use this example

Upvotes: 0

holtavolt
holtavolt

Reputation: 4458

You redistribute them in your installer.

Upvotes: 4

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