I wrote some simple code in C++, and I built it and ran it on my laptop, and everything as working. When I tried to run the .exe file on my brother's laptop, it gave me this error The program can't start because libgcc_s_sjlj-1.dll is missing from your computer. Try reinstalling the program to fix this problem. Am I missing something that I should have added or something?
Note: I don't know if it matters or not, but I'm using Code::Blocks.
Thanks
It matters because you used Code::Blocks. If you don't know about it, you most probably used Code::Blocks with MinGW. Install it on that machine followed by a reboot may fix it.
C++ programs need to have a runtime library -- you can think of it as needing .NET Framework to run C# or JRE to run Java programs. Visual C++ uses msvcrt (known as Visual C++ Runtime). Many installations of Windows seem to come with msvcrt by default which may explain why people using MSVC is less likely to run into issues like this.
If you statically link the CRT (C Run Time) you can lift the requirements of the clients having to have the DLL files installed, at the expense of having a larger .exe file.
A relevant SO answer: The program can't start because libgcc_s_dw2-1.dll is missing
You can place that DLL in the same folder as the .exe on your release and it should work
Related
It's my first time using Visual Studio 2017. I built a simple program in C++ on my PC. I was curious to see if my program works on another PC. I tried to execute the .exe on the other computer and it gave me this kind of error:
vs(some letters and numbers).dll is missing.
I assume that the .dll in question is part of Visual Studio.
I tried on a third PC, and this time the cmd stops working and becomes unresponsive after I execute my .exe.
I also have this problem when I compile with MinGW using the g++ compile feature in the cmd. When I execute the program compiled with MinGW on another PC, it gives me the same error, but this time it says something like
gw...dll is missing
Is there a way to avoid this error without installing the Visual Studio (or MinGW at this point) on any other PC I want my program to run on?
If you're interested in the code, I can put it here, but I don't think it's the problem here because I have the same issue for every other .exe compiled on my PC.
Here's a picture of the error:
In case of Visual Studio, you need to install Visual C++ Redistributable libraries or provide the libraries that are required by your application with .exe file (I am not sure if it violates license or not though).
In case of MinGW, you need to provide required DLL as well. I guess that you need libgcc_s_dw2-1.dll and libstdc++-6.dll, but you would better check it yourself. And remember about the license.
You may use Dependency Walker to analyse dependencies of your application.
UPDATE (2017-12-12):
I've missed the time you posted the screenshot. As far as I see from it the problem is that you are trying to run debug version of your executable: ucrtbased.dll is the debug version of the ucrtbase library and is only available (from what I know) from Visual Studio distribution. If you want to run your application on the computers that do not have installed Visual Studio, then you should use the Release version of your application.
In order to understand your problem you need to understand the concept of DLL.
Dynamic-link library(DLL) - As described by Microsoft:
A DLL is a library that contains code and data that can be used by
more than one program at the same time. For example, in Windows
operating systems, the Comdlg32 DLL performs common dialog box related
functions. Therefore, each program can use the functionality that is
contained in this DLL to implement an Open dialog box. This helps
promote code reuse and efficient memory usage.
So to put it simply, DLL is basically a bunch of compiled code, which is being linked to your code at load (or even run-time). Now, of course if your system is missing the DLL, your progrem will fail to work. To make things even worse, DLL are sensitive to the compiler that was used. So each DLL might have multiple version, so you will need to right DLL.
Now to the problem itself, the error message are the best way to start. They guide you what DLL are missing, and what is their name. For instance in your case "vs*.dll" is most likely related to Visual C++ runtime redistributable.
Finally, please note you have another consideration to make in addition to make your own system work: Every one that will use your code might face the exact same problem. So if you actually intend to share your .EXE with other people, you will need to understand how to guide them, or even automate their installation process.
I've been losing sleep over this for a few days now:
I'm using SFML to create an application and everything was well until I created a new project a few days ago. After that whenever I tried to compile a solution that uses SFML libraries I would get linker errors and missing DLL files.
I looked around and found a program called dependency walker which looks at which DLL files a program depends on. Apparently my program executable was missing some DLL files that are meant to be inside the windows directory.
I freaked out just a little, before finding out they all had the prefix "CRT" and the suffix of either nothing or "D" which meant that they were Visual C run-time library DLL's.
Even though I'm not missing vital DLL's from my PC, I still need to fix this issue. No there was not major hardware/software changes to my PC prior to the problem (I don't have an antivirus and just trust my guts, I haven't had an issue for 5 years now) and yes I'm sure I'm setting up the SFML directories properly following a tutorial.
I've tried reinstalling and repairing VS and the redistributable VC's for my version of VS (which is 2012 express for win desktop), tried clean booting, the windows self file check (sfc /scannow) and also tried manually placing DLL's into my directory that the dependency walker said I was missing.
Has anyone else encountered this before? How did you solve it?
*Interesting note: I have access to an admin account on my school network and installed VS on a computer there to see if the problem would re-occur. Since the windows directories on those machines are never modified VS executed fine. Could it be that I need to get a clean installation of windows?
I'm not sure if OP is allowed to answer on his own thread (or if there is a time limit), but here goes:
I solved my issue after looking at it with a cool head. I re-checked the version of my SFML libraries and wasn't sure if they were 64 or 32 bit, so I re-downloaded the 32-bit version (because my debug compiler is set to run on 32-bit) that was compatible with my version of VS. This changed the error I got from missing MSVCP140D.dll to MSVCO120D.dll (the numbers correspond according to the architecture).
I Googled/asked around for a while more to figure out that I needed a file named MSVCR120D.dll, which was found in system32 but not in SysWoW64. After placing respective architecture DLL files (64 bit for system32, 32 bit for SysWow64) it finally worked!
Even though dependency walker still says the executable is missing 6-7 other DLL files, the project still compiles and runs fine.
I hope this wasn't a solution that only applied to me, I've seen many others with the same problem.
I'm using Visual Studio 2015, and trying to compile a C++ code in Release mode, x86. My operating system is Windows 10, 64-bit OS and x64-based processor.
After it builds, if I run the .exe file from my laptop, it works perfectly fine. However, if I transfer everything in the Release folder to another computer (Windows 8) - no Visual Studio - along with two DLL files (pthreadVC2.dll and ucrtbased.dll), it gives me error 0xc000007b: the application was unable to start.
I've tried statically linking the libraries, but that didn't help. If I run the Dependency Walker, it says that the file - on my computer - has errors, and gives a log of what's wrong, which I cannot understand:
Error: At least one module has an unresolved import due to a missing
export function in an implicitly dependent module.
Error: Modules with different CPU types were found.
Warning: At least one delay-load dependency module was not found.
I looked around on this website, and apparently it means that 64-bit DLLs are being loaded and I should change that from Path. How do I do that? And why doesn't it work on the other computer, which has the same processor? I installed the Visual C++ Redistributable for Visual Studio 2015, but that did nothing.
Another question: The code uses many external headers. Do I have to export them to the other machine as well? Aren't they compiled as a LIB File?
I'm sorry if I sound clueless, but I rarely write applications using Visual Studio. Thanks for your help!
That error code is an NTSTATUS code, specifically STATUS_INVALID_IMAGE_FORMAT. That usually means that the loader is finding 64 bit modules rather than 32 bit modules. Exactly which modules are the wrong bitness is hard for us to tell. Running the startup under Dependency Walker's profile mode would reveal all.
You do really need to get a clear handle on what dependencies your program has. You have specific dependencies related to your program that go beyond the normal MSVC runtime dependency. Only you can know what your dependencies are. A tool like Dependency Walker can help you understand them, but make sure your understanding is solid. Try not to use trial and error to resolve this.
I'm using Visual Studio 2013 Ultimate.
My Qt version is 5.2.1
Am using a specific build for VS2013 which I obtained from here.
Now, what I did:
Created a new Qt Application from Visual Studio.
Typed in my logic and the code.
Built it successfully in x64 Debug mode.
Ran the application successfully.
Everything good so far.
Now the problem:
I restart my Visual Studio and load the project.
It is built successfully (in x64 Debug).
Now, am unable to run it. I get the error:
The program can't start because Qt5Cored.dll is missing from your computer.
Try reinstalling the program to fix this problem.
It ran the first time when I created the application. Now it won't run.
I tried simulating the problem, and this happens everytime. Runs the first time, and doesn't run after Visual Studio restart.
Please help me resolve this issue.
Thanks in advance.
From project properties you have to go to debugging -> Environment -> and write PATH=qt5 dll paths Or you have to put the dlls next to the exe.
The first time you in debug mode. Probably in that case Qt5Cored.dll (with a d in the name) was used. Maybe in the second build, you build in release mode, and for some reason Qt5Core.dll is not found in the PATH.
here is what i did and it worked :D
first : make sure you are building a release version not a debug version
second : it asked for the qt5core.dll when you copy it to the same path of your program it may ask for other *.dll files so i put the program in the folder containing all the dlls :D
which is
C:\Qt\Qt5.7.0\5.7\mingw53_32\bin
or according to your installation ..it worked well
any way this folder (as i think) contains all DLL libraries you may need with your program
so to know what exactly you need from it try to start your program many times in another location and in every time you will know another dll needed according to your programming ..
that method worked but i think there may be a more cleaver solutions we have to dig for :)
I have been trying to find a solution for this problem but I haven't been able to see/find any answer that correctly solves it.
I coded a program (Qt + OpenCV) that works fine when I run it with Visual Studio, but trying to run the executable it simply does not execute anything. The program doesn't give any error: it just never starts.
I am not sure where to start checking what is happening and why it is not even starting (I could understand lack of libraries, some other error..).
I am basically interested on what are the best way of checking why a program runs when executed from the IDE and not from the executable created. As I said, I was expecting an error message if something was wrong. Any ideas? Any good programming advice regarding how to avoid this problem in the future?
Edit: I forgot to mention that I am coding with a Windows XP machine. It doesn't work in this machine when I try to execute the file. It executes normally on a W7 machine but not in other W7 machine.
The executable will need the QT libraries on the computer that you are running it on. On linux there is command (I think ldd) that will show you what libraries your executable needs. I am not sure about Windows but there should be something similar. At least on a linux computer it will not necessarily give you an error if the QT libraries are missing. The executable just seems to do nothing.
Try copying the executable into the same directory as the .dll files in the Qt 'bin' directory.
If that works then you just need to put the Qt bin directory into your path, or copy the dlls into the windows\system directory
You need not only the correct dlls in your path (best in the application directory), but also the plugins in the correct location. See my answer to the question: Qt dll deployment on windows.