I'm having problems importing my custom static library into my project. I have my library in the same solution as the project that I am trying to include it in.
In the VC++ Directory section of the project properties I have put "$(SolutionDir);" in the Include Directories and "$(SolutionDir)Debug\;" in the Library Directories. It is my understanding that the "$(SolutionDir);" is a macro that defines the root directory right? As the library shares the same solution as the project it also shares the same root directory and the .lib file that is created is in the Debug folder of the root directory.
In the Linker/Input section, I have put "GameEngine.lib;" in the Additional Dependencies. "GameEngine.lib" is the file name of the .lib that is in the Debug folder of the root directory.
When I'm trying to include anything from the library it just doesn't even recognise it as existing when writing:
#include <GameEngine/Rendering/Model.h>
Doing it the way below shows that it can actually find the file, meaning the path exists and is correct but I get linker errors doing it this way.
#include "../GameEngine/Rendering/Model.h"
I am using Visual Studios 2017.
Link to GitHub repo: https://github.com/TheHoester/OpenGLGameEngine.git
Thank you
You need to make sure you set the directories for all build configurations. You have only set the include directories for the "x64" platform so building the "Win32" platform won't work. After adding the directories to the "Win32" platform your project builds correctly.
Note that it is more usual to use "VC++ Directories" for system includes and libraries and to use "C/C++/General/Additional Include Directories" and "C/C++/Linker/General/Additional Library Directories" for linking to your own libraries. There isn't any problem that I'm aware of for using the "VC++ Directories" settings though, just make sure not to modify any of the existing paths in there.
Related
I'm trying to add the Boost C++ Libraries to my C++ project created with Visual Studio 2017.
I have followed the instructions here.
When that didn't work I tried the advice in this post. Neither solutions worked for me.
What I have done:
Downloaded boost_1_69_0-msvc-14.1-64.exe from this precompiled boost libraries page
Installed to D:\local\boost_1_69_0
In my project I added D:\local\boost_1_69_0 to Properties > VC++ Directories > Include Directories and added D:\local\boost_1_69_0\lib64-msvc-14.1 to Properties > VC++ Directories > Library Directories
I have my project set to x64 and the above settings were set in the x64 configuration
When I try to build my project I get this error:
Error C1083 Cannot open include file: 'boost/regex.hpp': No such file or directory
Which points to this line of code in one of my .cpp files:
#include <boost/regex.hpp>
Please go to D:\local\boost_1_69_0 folder and see if you have a sub-folder named include in there. If you do, then instead of D:\local\boost_1_69_0 you need to set D:\local\boost_1_69_0\include in Properties > VC++ Directories > Include Directories
In other words, try to find the file you are including on your hard drive. Look at the full path to the file. Compare that full path with the path you added to the list of include directories (Properties > VC++ Directories > Include Directories) concatenated with the relative path you provided just before the filename in your include directive (boost). See if the two are the same.
If that does not help, then make sure you changed list of include directories for the same build configuration as you are attempting to build (if you build Debug, make sure you changed configuration for Debug too). Since VS 2015 IDE stopped making sure the two are selected in sync, which is annoying.
If your files are copied, then you have to compile the regular library.... If the same version of the compiler copies the machine.
Found out it was failing because I had included the same .cpp file which has the boost include into my unit test project which did NOT have the Include/Library folders set. The settings in my original question work now.
Newbie to windows. I need to use yaml-cpp library in a project, but I can't seem to compile it in windows. I tried everything (everhthing!) I could find but no place have the full answer, just tips for the process. but those tips don't help so much.
I did create shared lib in Ubuntu but can't create dll in windows.
can someone give the full explanation to get dll from source code?
(I also be grateful for explanation of how use the dll with it's includes).
Working with visual studio 2015.
So finally I got it.
for linux users - use cmake. for windows users - you can but I really don't recommend it unless you need cross compiling. Use visual studio: (explained for VS 2017)
First create new project with existing code.
The folder you pick should be "src" (in case of cpp-yaml).
When creating the project you need to choose type of project (exe, dynamic or static library), so choose dynamic library to create .dll or static to create .lib.
After creating your project go to your project properties, go to c/c++ tab --> General --> "additional include directories", and add your path to the headers folder ("include"). Do not add "cpp-yaml" inside the include folder, only "include".
Now build. In the console you can see where the library was created.
To use it, in case you made static library 4 things need to be done:
add to your project "#include cpp-yaml/yaml.h"
in properties:
in tab "c/c++" --> General --> "additional include directories", add the include folder path. (as before)
in tab "Linker" -->Input, add to the "Additional dependencies" your lib name (followed by semi-colon)
in tab "Linker" --> General, add to "additional library directories" the path to your lib.
So I've always had to use the project's "Additional Include Directories" property to set relative paths to other (library) projects that I'm dependent on for a given solution.
So the solution structure is essentially:
My App.sln
-> My App.vcxproj
-> My Lib.vcxproj
What I want, is for My App project to automatically have the path to My Lib project files added as an entry in its "additional include directories" simply because My App is dependent upon My Lib.
I set the library / linkage dependency by adding it under "References" for My App, which beautifully means that My App will automatically link against My Lib's output .lib. PERFECT!
But... I don't see how to get the .h files from My Lib to be included into My App without manually specifying its path (or relative path) to My App project's "additional include directories" property.
I have lived with this for years, but I had to solve the linkage issue for a dependent dependent and found a very slick way to do that without having to touch project settings.
Which makes me think - surely there is a way to do the same for "project A is dependent on project B and hence should automatically search project B for #include references"
Am I out on wishful thinking limb? Or am I missing some great facility in VS?
The distribution of assimp comes with a lib folder. This folder has the following sub folders :
assimp_debug-dll_win32
assimp_debug-dll_x64
assimp_release-dll_win32
assimp_release-dll_x64
Each of those folders has a single file, assimp.lib. How can I include the correct lib based on my configuration (debug/release)? Currently, assimp is in a folder outside of my project and I've added the paths to Tools->Options->VC++ Directories->Library files, but I'm not sure its working.
You should add the library directories to the project itself rather than as a global setting in visual studio.
To do this, you can right click on the project in the solution explorer. Then under the VC++ directories section, add in the correct path to assimp. You should just add the path that corresponds to the current (i.e. debug or release/win32 or x64) setup to this list. There should be a drop down at the top to select the current configuration that you are editing.
This applies to VS2010 anyway, I'm not 100% sure about VS2008. The library path may be under Project Settings -> Linker ->General -> Additional Library Directories if the VC++ directories section does not exist.
You should be branching the include paths for each build configuration using properties -> linker -> additional include directories. this will solve your problem.
a secondary option is to use #pragma comment(lib,"<lib name>") and use the path to the library you want to link to, then using #if/#endif you can branch based on the current build version.
you can test it using dependency walker, process explorer or any debugger.
You could do it using preprocessor directives:
#ifdef __DEBUG
#pragma comment(lib,"c:/Path/assimp_debug-dll_win32/assimp.lib")
#else
#pragma comment(lib,"c:/Path/assimp_release-dll_win32/assimp.lib")
#endif
I have had C++ experience but not MSVC.
What I am trying to do is incorporate a .dll from an open source project into my project. The code is available and I have built it. I have the .dll as well as the .lib which as I understand it is required for C++ projects.
Now unfortunately there is no simple "Add Reference", drop my .dll into an include directory and add that to my solution. I have edited the project property pages, the C/C++ Additional Include Directories option as well as adding the .lib as an additional linker dependency. I have created an include directory for the dll and lib inside my solution tree.
My problem is when I try to include the header files from the documentation, VS output spits out error messages. Now I realize that I am using the dll/lib combo and that the .h files are not present in my solution so how do I add the proper includes? I am using QT toolkit also which is working but how I add the other header / dll from the open source library eludes me.
Can someone please point me in the right direction.
You need to do a couple of things to use the library:
Make sure that you have both the *.lib and the *.dll from the library you want to use. If you don't have the *.lib, skip #2
Put a reference to the *.lib in the project. Right click the project name in the Solution Explorer and then select Configuration Properties->Linker->Input and put the name of the lib in the Additional Dependencies property.
You have to make sure that VS can find the lib you just added so you have to go to the Tools menu and select Options... Then under Projects and Solutions select VC++ Directories,edit Library Directory option. From within here you can set the directory that contains your new lib by selecting the 'Library Files' in the 'Show Directories For:' drop down box. Just add the path to your lib file in the list of directories. If you dont have a lib you can omit this, but while your here you will also need to set the directory which contains your header files as well under the 'Include Files'. Do it the same way you added the lib.
After doing this you should be good to go and can use your library. If you dont have a lib file you can still use the dll by importing it yourself. During your applications startup you can explicitly load the dll by calling LoadLibrary (see: http://msdn.microsoft.com/en-us/library/ms684175(VS.85).aspx for more info)
Cheers!
EDIT
Remember to use #include < Foo.h > as opposed to #include "foo.h". The former searches the include path. The latter uses the local project files.
The additional include directories are relative to the project dir. This is normally the dir where your project file, *.vcproj, is located. I guess that in your case you have to add just "include" to your include and library directories.
If you want to be sure what your project dir is, you can check the value of the $(ProjectDir) macro. To do that go to "C/C++ -> Additional Include Directories", press the "..." button and in the pop-up dialog press "Macros>>".
You mention adding the additional include directory (C/C++|General) and additional lib dependency (Linker|Input), but have you also added the additional library directory (Linker|General)?
Including a sample error message might also help people answer the question since it's not even clear if the error is during compilation or linking.