I have a solution which was compiled with compiler VS2008. It was working perfect. It is instrumented with Google Test and the Google Test library is linked to the solution. the gtest.lib should be compiled with the same compiler as the solution itself, as far as I know.
Now, I have to compile this same solution with VS2013. I get this compilation error
Error 3 error LNK2038: mismatch detected for '_MSC_VER':
value '1700' doesn't match value '1800'
I think that I should get the library for Google Test compiled with Visual Studio 2013.
I cannot find such thing. Could you give me a hint at the Google Test library I should go for ?
The linker error you get is pretty obvious: You need a gtest.lib compiled with VS2013.
"I think that I should get the library for Google Test compiled with Visual Studio 2013."
Exactly, so just do that.
"Could you give me a hint at the Google Test library I should go for ?"
Well, no more as to cite from the google test primer documentation (emphasis mine), sorry (I doubt you can reliably download a proper binary elsewhere):
Setting up a New Test Project
To write a test program using Google Test, you need to compile Google Test into a library and link your test with it. We provide build files for some popular build systems: msvc/ for Visual Studio, xcode/ for Mac Xcode, make/ for GNU make, codegear/ for Borland C++ Builder, and the autotools script (deprecated) and CMakeLists.txt for CMake (recommended) in the Google Test root directory. If your build system is not on this list, you can take a look at make/Makefile to learn how Google Test should be compiled (basically you want to compile src/gtest-all.cc with GTEST_ROOT and GTEST_ROOT/include in the header search path, where GTEST_ROOT is the Google Test root directory).
Once you are able to compile the Google Test library, you should create a project or build target for your test program. Make sure you have GTEST_ROOT/include in the header search path so that the compiler can find "gtest/gtest.h" when compiling your test. Set up your test project to link with the Google Test library (for example, in Visual Studio, this is done by adding a dependency on gtest.vcproj).
If you still have questions, take a look at how Google Test's own tests are built and use them as examples.
I personally prefer to build the test runner using the src/gtest-all.cc to be built and linked with my test-projects from source. That's the most simple and mostly portable way IMHO (using e.g. your custom GNU makefiles).
As said in the comment on your OP, you can easily do a "prebuild" just using your VS2013 compiler, to link with it from other projects.
Note that there's a native GTEST package on NuGet which contains a gtest.lib. Has the additional benefit of making the gtest include folder automatically available.
Related
I have problems building my code that is using static lib detours. I am trying to do an old basic CTF. For that I want to get into detours.
Whenever I try to build my .dll file I get an issue
LNK2019 unresolved external symbol _DetourTransactionBegin#0 referenced in function _DllMain#12
Now, I have built the detours library using 3 different version of the visual studio dev console.
I have tried firing 'vcvars32.bat' and then using nmake to build the library which was able to build it, but I get the above error during linking my .dll. I have also tried building it with 'vcvarsamd64_x86.bat' and then using nmake to build it which also was able to build the library, but I still get the same error as above during linking.
I have tried the usual stuff: the include folder for detours.h is added to C++/General/Additional Include Directories.
Under Linker/Additional Library Directories I added them as follows: "C:\temp\det_retry\lib.X64";"C:\temp\det_retry\lib.X86";%(AdditionalLibraryDirectories).
And also under Linker/Input/Additional Dependencies I have the following: detours.lib;%(AdditionalDependencies)
What am I missing here? This is a blocker for me for a couple of days and I am reiterating the same steps trying to figure out what's missing but I cannot see. I'd really appreciate the input.
I am sure I am using the newest version because I have downloaded (cloned) detours from the ms github page.
It appears your "Additional Library Directories" are setup incorrectly or contain invalid entries rather. They look like actual library file entries (i.e. pointing to some specific files) versus being only directories (e.g. "my/lib/path/for/my_project/"). Visual Studio's naming conventions are somewhat cryptic but they should be directory entries only. There should be an entry to whatever directory contains the detours.lib file (e.g. "MyProject/Libs/MSDetour" ... where MSDetour is a folder with the "detours.lib" in it) and then Visual Studio should find the library and link everything correctly.
As a side note, if you are using the Visual Studio developer console for building your project/solution you might want to look into CMake ... it is, in my opinion, significantly easier to work with (less "settings" digging) and maintain in the long-run.
I'm new to coding and Visual Studio. I know and understand how to create, save and compile a new C++ project in Visual Studio. I understand that a new VS project creates a solution file in the directory which then I can use to open the project, etc.
What I don't understand is how to compile a C++ project which doesn't have a VS solution file. I mean, do I have to manually create a project and import files and then build it?
Please take this GitHub project as an example. Under information, it clearly states the following:
Building
To build a static library (./lib/ompeval.a) on Unix systems, use make.
To enable -msse4.1 switch, use make SSE4=1. Run tests with ./test. For
Windows there's currently no build files, so you will have to compile
everything manually. The code has been tested with MSVC2013, TDM-GCC
5.1.0 and MinGW64 6.1, Clang 3.8.1 on Cygwin, and g++ 4.8 on Debian.
Now, what I don't understand is how do I build this project in my VS software so that I can successfully run it? Any help would be appreciated. Thank you.
As you said it, create a new project in Visual Studio and just import the source and header files. Looking at the makefile, there doesn't seem to be any pre or post build events so you can import the files and compile them right away (as long as the code is platform compatible ofc).
You may have to create multiple projects. One for the static library and one for the test files, since Visual Studio projects usually have one output type only. Mostly one of the presets: dynamic library (dll), static library (lib) or executable (exe).
I work in a project using Qt compiled with Visual Studio C++ compiler.
I noticed after migrating from VS2017 to VS2019 that when building the application, VS always find qrc cpp files as modified and try to rebuild them.
Is not happening for all projects though, only some unit tests.
Does someone notice this behavior?
I've had the same issues when upgrading from vc141 (2017) to vc142 (2019). It's old but the only post I found, so:
The difference in the toolkits is that in vc142 "Custom Build Tools" are now appended to include inherited values. If your project is configured to use a build tool projectwide by default (for example meta objects from QTs signal/slot), the compiler will try to do that as well when trying to rcc the qrc files, and ultimately failing without throwing an error.
Simply removing ;%(Outputs) in Properties->Custom Build Tool->General->Outputs solved it for me.
I have a local .Net Standard 2.0 library project and separate Xunit test project as part of a VS2017 solution. Library and Xunit tests successfully build with VS2017 and tests all succeed.
I uploaded the Git repository to VSTS. I am attempting to Build the two projects and then run the tests. The Restore step succeeds. However, the Build step successfully compiles the library, but the tests fail because the reference to the library dll is not found.
I have searched the Internet and have not found anything that helps me solve this. I assume that there is something simple to do that fixes this but ....
I'm fairly new to C++ and an trying to figure out to use the TagLib library for a project I am working on. I'm working with unmanaged C++ in Visual Studio 2010 on Windows 7 64bit. I've never used an external library before so I'm very confused on how to go about this.
From this blog entry I got the libtaglib.a and taglib.dll files. I ran across this SO question on how to use TagLib, but it deals with QT Creator, not Visual Studio and I'm not knowledgeable enough about the subject to understand what is being said to translate it into what needs done for Visual Studio.
So, some questions:
Is it even possible to do this with unmanaged code?
What exactly is the function of a .a file?
Most importantly, how do I go about using the taglib.dll in my program??
I've been all over Google looking for a way to do this, but my major problem is that everything I run across is over my head. Please let me know if more info is required. Any help is very much appreciated! Thanks!
I seem to have gotten it working successfully. Here's a rough outline of what I did:
1.) I used CMake to generate the Visual Studio solution.
2.) I attempted to build the tag project in the VS solution, but it failed.
3.) I made the corrections to a few source files as outlined here: http://old.nabble.com/taglib-fails-to-compile-with-MS-VC%2B%2B-2010-td29185593.html
4.) I built the tag project again in release mode. This time it was successful.
5.) I copied the resulting dll, def, and lib files to the same directory as the source files for my project.
6.) I copied the header files from the taglib source to a subdirectory in my project (not sure if this entirely good practice)
7.) In my project settings, I set the subdirectory with the header files as an additional include directory.
8.) I added the dll, exp, and lib files to my project by just going to Add>Existing Item.
9.) I added some code from the taglib examples and built it. Everything worked so I think I got it.
One caveat I ran into, since the DLL was built in release mode, my project had to be run in release mode or it would crash. I'm guessing that if I replaced the DLL with one built in debug mode I could run my program in debug mode, but I have not tried this.
You cannot use libraries specific to GCC (you can tell because they have .a extensions) with Visual Studio. You will have to build the library from source in order to use it with MSVC. Once you have done that it's a simple matter of adding the .lib generated from the build process to your project and things should work out of the box. (Note that it's a .lib you need whether you're compiling for dynamic linking or not -- doesn't matter in msvc land)
EDIT -- after looking at TagLib itself --
In order to compile TagLib you'll need to get the CMake build system, and TagLib itself, and have CMake build you a visual studio solution. Using that solution you'll be able to build the .libs and .dlls you need. Note that because TagLib is a KDE library, you'll probably need to also build some QT bits in order for everything work work successfully. However, I don't have specific experience with the library so I'm not going to be all that helpful here.
Yo do not have to recompile the source (to create the .lib file) if you have the .dll file. With dumpbin /exports and lib (both came with Visual Studio) yo can create a lib that you can link with your application. In this link you can see a nice explanation: http://www.coderetard.com/2009/01/21/generate-a-lib-from-a-dll-with-visual-studio/
But as Billy Said, probably you would need other parts of QT to use this library.