So I wrote a small script to do some math calculations, but I cant get it to run on another computer. When I try to run it, it says I'm missing multiple dlls. MSVCP140D.dll, VCRUNTIME.dll, and ucrtbased.dll are the ones it says it cant find. The only include I have in the entire doc is iostream, is it somehow linked to specific Visual Studios dlls? and if so how would I go about making it able to run on a different computer.
I am using VS 2019 and windows 10 if that helps in any way.
any and all help appreciated.
You can use static linking of the C Runtime (/MTd or /MT), but it's not recommended in general which is why all VC++ projects default to the DLL version of the CRT (/MDd or /MD).
See Microsoft Docs.
Related
I have spent an incredible amount of time getting our product to run properly on customers' machines after we moved to Visual Studio 2015, and I still have one problem left to solve. The problem is that I can't get any of the C++ 2015 redistributables installers to work on 32-bit Windows 7 when it hasn't been patched (Windows Update).
The full story:
We upgraded all projects in the solution from VS 2013 to VS2015 and .NET 4.5.2, which also forced us to upgrade to "Microsoft Visual C++ 2015 Redistributable (x86/64) - 14.0.23506/23026)". We've done this kind of upgrade many times before, from VS2010 and up, and it never failed before.
23506 (for short) are the DLLs that accompany VS2015. We always found it easier to just XCOPY the DLLs into our installation folder. For some reason that doesn't work with the DLLs from VS2015 (23506). The program can't find them even when placed in the same folder as the executables. Why not?
Then I ran vcredist_xXX.exe that accompany VS2015, and the program runs fine.
But I want to XCOPY, so I discovered the download of 23026 from Microsoft, but there are no DLLs in there - only vc_redist.xXX.exe. Still, I copied the DLLs from somewhere in Windows - the paths to each DLL is listed in the registry. By the way, there are two extra DLLs installed that are not present in the folders in VS2015. "mfc140.dll" and "mfcm140.dll". Why?
But XCOPYing 23026 didn't work either, not even with the two extra DLLs. Running vc_redist.xXX.exe from 23026 worked fine.
Ok, problem solved, I thought. Using vc_redist.xXX.exe instead of XCOPYing. But no.
The final problem is that vc_redist.x86.exe (from 23026) and vcredist_x86.exe (from 23506) both fail when run on a 32-bit Windows 7 machine that hasn't been patched (Windows Update) at all after installation. For reasons I won't go into, that's the kind of machines we have to install our product on - unpatched 32-bit Windows 7 - no way around it. (The problem maybe exists on 64-bit unpatched Windows also, but I haven't got the time to find out.)
How do I get around this?
I am trying to link the C++ runtime statically and drop the DLLs alltogether, but it seems impossible when you have native C++ with C++ wrappers in a .NET project. This issue has already been reported by others, so no need to go into it here.
I have tried searching for DLLs to download, or a way to extract DLLs from the installer. Anyway, as mentioned above, I already tried just copying them from somewhere below C:\Windows. Doesn't work, so I doubt I can get some DLLs that will work. But again, why? If somebody can help me figure out this, it could be the perfect solution for our problem.
I have been thinking about finding the exact Windows patch(es) needed to get that installer - vc_redist.x86.exe - to work on those crappy machines. If it's just one or a handful of KBs that doesn't destabilize these machines, that would perhaps be acceptable.
A possibility that definitely should work is to downgrade the C++ projects to VS2013, which doesn't have this problem. I am really fed up of us always having to keep two versions of Visual Studio on our developer machines as a workaround for some silly problem, but if there's no other way, then so be it, even in 2016.
Found a quick and simple workaround. Turns out we only need to change the setting "Platform Toolset" to "Visual Studio 2013 (v120)" in all the C++ projects, in order to build with the good old DLLs that still work with XCOPY deployment. I was under the impression this setting would not go together with .NET 4.5.2, which we need, but it does. VS2013 will have to be installed along with VS2015, but we can live with that.
As stated, this is a workaround. It doesn't solve the actual problem stated in the title. But since I actually asked for a way around the problem, I'll close the issue with this answer.
As for the actual problem, if anyone is interested: I found some blog entries on the Visual C++ Team Blog - "Introducing the Universal CRT" and "The Great C Runtime (CRT) Refactoring". Where that leads, I'm not sure.
I was able to get this resolved on my local PC by following the updated step 6 on that article: https://blogs.msdn.microsoft.com/vcblog/2015/03/03/introducing-the-universal-crt/
Once you copy the 20 or so DLLS folder it still didn't work for me, I had to grab the ucrtbase.dll and ucrtbased.dll along with all the usual 140 (mfc, mfcm,vcruntime, msvcp) from my SysWOW64 folder and finally i'm able to launch this on a windows 7 pc without requiring to install any patches!
I have a native Win32 project written in C and wanted to visualize my project's dependencies from external DLLs. Visual Studio 2012 and 2013 let me generate a code map which would not only show all my functions and their dependencies from each other using arrows, but also all external libraries I used, which functions I used from those and which of my functions called which external functions etc..
Now, in Visual Studio 2015, this latter part seems to be missing. I can not get Visual Studio to show my project's external dependencies. I only see the internal ones. So here's my questions: Am I missing something? Do I have to activate a specific option in my project settings? Or are those external dependencies just not working in Visual Studio 2015 right now?
Steps to reproduce: Create a new non-empty Win32-project. In the Architecture menu, select Generate code map for solution. You will only see Win32Project1.exe in the middle of the screen. Meanwhile, Visual C# seems to be fine, showing the external dependencies. Create any C#-project for comparison.
Thank you for taking the time to post this! This looks like a regression, as in Visual Studio 2013 an Externals group with external dependencies is shown for C++.
I've logged a bug on Microsoft Connect so that you're able to track this externally:
https://connect.microsoft.com/VisualStudio/feedback/details/1694695
I have posted this workaround on the link that Bogdan Gavril listed and hope it helps someone. Unfortunately, it requires that you enable "CLR" support for your project. Basically, it appears that the VC++ linker and librarian is looking for a flag that indicates some type of managed code. At the very least, the code map is dependent on the mscorlib.dll reference injection. To make the CLR issue (which adds a lot of unnecessary bulk for native code) less a problem, simply create a new build configuration for use only when you need code maps with external dependencies. Make sure you've selected "CLR Support" on the general options of the project properties configuration page. Then, clean (probably not necessary) your solution and generate a code map. You will find the external dependencies as expected!
Zac
I am learning how to build games in Visual C++ and when I upload them so friends can check them out, they all end up with messages saying it can not run. I did some research and found that it is because I am compiling against a Dynamic library instead of a static library. Correct me if I am wrong anywhere please. Upon further research, I found that a lot of people do not advise going this direction but instead include the files needed by my game.
How would I go about distributing my games to friends and make it real easy for them to just open up my .exe and play the game?
If you link to any DLLs, you also need to ship those along. If you produce a single .exe in your output, you probably need your friends to install the MS Visual Studio redistributable package for your version of visual studio. This is an example link for the VS 2010 one, but the one you give your friends should match your version.
There are essentially two options: Keep everything as-is and provide them with the runtime files (also named Microsoft Visual C++ * Redistributable Package or similar; the * has to be replaced with your version, e.g. 2005, 2008 or 2010). Downloads can be found on Microsoft's download site as well as in your Visual Studio installation folder (look for a folder called "Redist").
Alternative solution: In your project settings you're able to select the runtime environment (under linker options). Change your release build to use "Multithreaded" instead of "Multithreaded-DLL".
Can anyone give me the procedure for building a blogslib library containing code in vc++ 2008 edition?
The official documentation gives it for vc++ 2006.
Thanks.
In my answer I presume you mean cvBlob library not Blog one. If I got it wrong then ignore me.
I haven't used that blob library but it seems that you need to add the lib file that you have compiled into the Linker of your project (Linker->Input) (and also check if you have the additional paths set in there so it can find it in the right directory (Linker->General))
You can also try - cvBlob (google it to find the link) - just include 2-3 files to your project and compile. I used that for my project - http://www.youtube.com/watch?v=9o4Dcr0t_nI
If you need any other help feel free to ask.
I have an application that uses the ms vc++ runtime. How should I install it on the end-user's system if it is not present? I was thinking of bundling it with the installer... but how would I do that as far as what to include? Is there some silent installer? If so, where can it be found? I can't seem to find it in the Windows SDK.
There is an interesting post about deploying the runtime libraries on the Visual C++ blog. The post is about VC8 so I'm not sure all the recommendations apply to VC9.
Here are your options according to Microsoft:
Use an .msi installer including the .MSM files for the VC
libraries you're using. These MSM
files install the libraries globally.
They also keep a reference count so
that the libraries are removed when
the last application using them gets
uninstalled.
Use "app-local"
deployment i.e. copy the
libraries and manifest files in your
application directory. This is a simpler
solution if you don't use an .msi
installer. Your app should still use the
system version of the libraries if they are more
up-to-date than your own.
Link everything statically (and avoid crt usage across dll boundaries)
Another option Microsoft discourage you from using is running the Visual C++ redist installer from your own installer.
I'm not sure what their reasons are. It will take a few extra megabytes and will not be reference counted but it still works very well AFAICT. You can pass the /q option to vc_redist_x86.exe to perform an unattended install (no user interaction).
It has it's own installation program. I've seen it usually run as a prereq step of a larger installer.
One way or the other, you need to list it in your manifest. So you might just as well deliver it as via SxS in your application rather than try to deliver a global copy to the target machine. SxS is a big hard subject, sadly. Hopefully someone will supply an answer with more details and I'll delete this one.