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Hi, nice video, I found it very helpful to understand some concepts, and some lines of cmake. Although I got some questions, if you don't mind. Basically, when I built the project it throws me an error saying it was not able to find my headers, so in the cmake of my project I added an include_libreries with the path to those headers, when I reran the build command again It throws me an error saying that it didn't identify the namespace that are in the hpp files, something like this "error: ‘MyNamespace::secondNamespace’ has not been declared MyNamespace::secondNamespace::Myfunction" and highlights the second Namespace, to be honest I don't know what could be causing this error could you help me to understand? by the way I'm working with ubuntu and the library has several headers and their own cpp file. thank you again for the video

Wilson Kimberly Moore Jennifer Lee Linda

This is the best cmake tutorial I ever seen on youtube, Thanks man. I have a one question, I currently working on project that uses "glfw3" as an external library, After precompiling It, when I use "find_package(glfw3 REQUIRED)". it does find that library but when I trying link with it.... it gives me a linker error... I'm doing something like this "target_link_libraries(<my_lib> PRIVATE glfw3)", I don't know what is going on, when I change "glfw3" to "glfw" it works, Is it something to do with library it self, or Is it me doing something wrong.....but my qustion is how can find the package name is, when i'm trying to use find_package function... and the other thing is "namespace" can you explain it little bit....

Why even make a video when there's no github link to example project?

Nice Video, you are accually the first guy on youtube who explained it. But I have a question: 20:40 - When I use this command, it says that the source directory does not appear to contain CMakeLists.txt - And indeed, there is no file like this in the whole file tree after using cmake --install. What should I do? I have to use Qt so its a bit different I quess

What happens to all that on Windows? Is there a Windows equivalent to the linux usr/lib system?

This is god sent stuff.

Excellent explanation!!! In my case, cleared up a lot of confusion. thank you so much.

hey just wanted to tell you this video was very helpful, while it didn't work 100% because my text editor is /unusual/ I managed to get it working after 3 days thanks 😀 (I got it working just a few minutes after your video)

Excellent video! Would you be able to do a similar video on Google Protobuf?

I was just curious where you were able to find all the information for this, CMake has some rather verbose documentation which seems to be a trend for C++ and so I wanted to know what resources you used or if you're just a CMake Wizard

no sudo?

why this guy doesn't have more subscribers!!! wow sir your channel is a gem

Thanks for explanation. Can you just explain what would be the difference if I use: 1. package installed with apt-get (and where it is stored) 2. package installed in conda-env (and where it is stored)

Please continue! Very descriptive and clear! Thanks!

hey can i get your wallpaper ?

thank you, this was really enlighting! I enjoyed how you resolved my questions that just came up on the go intuively

Great tutorial! It is not only a good lldb tutorial, but it is also a good general debugging overview for newcomers.

That was actually very useful. The main reason why I was trying to find some other ways to include third party libs (by now I've just either downloaded source files and compiled them, or used precomopiled binaries) is that I wanted to share my project across different platforms, and now I find it very convenient to have users download dependencies themselves and simply include the paths in DCMAKE_PREFIX_PATH, or if they're on linux it's handled even more.. "practically". So yea, thanks for the video!

This video makes zero sense to me. Your alternate solution has just built another layer on top of the application. You haven't added or changed any lower layers which is actually calling the RENDER function, which was our purpose for having it virtual in the first place. The solution doesn't even show the new implementation of the render function. How do we make it so it has the same signature as all other renderers? What if I have 10 methods that have the same signature but needs to be handled differently by each renderer? The code duplication would be insane, no? I guess, if one doesn't care about the signature being consistent we could just not bother but the whole point of virtual functions is that they inherit the same signature but with a different body. How is this solved?

And this did it! Stack overflow and other forums had it wrong or were confusing the whole time

Thank you. But I cannot figure out why I don't see the "Cmake settings" button after right-clicking to the CMakeLists.txt

Has anyone told you how much you look like Ben Affleck?

Sadly visual studio only opens the cmake settings as a json file for me :-(

In your example of changing out the renderer via template argument, how does one even know T is actually a renderer? it could be a fat melting factory for all we know, no?

I wish people would quantify the "performance penalty" When talking about virtual methods for the last 3 decades. It's the same cost as adding 1+1, no? Or de-referencing a pointer. Are we scared to add 1+1 and talk about performance every time we do? Even in embedded or game programming, I don't know why people are so scared of dynamic polymorphism. ... and as far as I know you HAVE to have dynamic polymorphism in order to mock in your unit tests. You at minimum need to use an interface and have a concrete class. Maybe I'm wrong, but noone has ever shown me otherwise. I'd love to learn if I am wrong.

How do one find proper segmentation error in lldb I use mac

This is how I wanted it ❤

I've been struggling for around 3 days to successfully compile SDL2 packages. I've managed to compile the core SDL2 package, but I can't figure out how to do the same for the others (SDL2_image, SDL2_ttf, etc.). My goal is to write a CMakeLists.txt that will compile all of the packages together, and then I can comment out which ones I don't need for each project. I don't know if it's a cruel twist of fate or what, but I ended up figuring it out as I was writing this comment. I'll put what I did here-> After downloading the VC version of the packages, I extracted the folders into a folder dedicated to all my SDKs. Then, I made an environment variable named "CMAKE_PREFIX_PATH" and set it to the path of the folder holding all of the SDKs. Now, in the CMakeLists.txt : I put a "find_package(PACKAGE_NAME REQUIRED)" statement for each package needed above the "add_executable()" line. Following the "add_executable()" line is the "target_link_libraries()" statement. This is the line I was having issues with for so long. It kept saying that the target couldn't be found. This is what worked on my machine: "target_link_libraries(${PROJECT_NAME} PRIVATE SDL2::SDL2 SDL2::SDL2main SDL2_ttf::SDL2_ttf SDL2_image::SDL2_image)". I imagine the bit before the double colons is the target and the bit following the colon is the lib. I'm not experienced with CMake in the slightest, but my file seems simpler compared to everything I found when debugging. Hope this helps

In the interests of portability, rather than installing SDL2 at the system level I've included the SDL2 development package within my project (under a folder dep) and use ``` set(SDL2_DIR ${CMAKE_CURRENT_LIST_DIR}/dep/SDL2/cmake/) ``` to allow find_package to find it. Also to ensure the DLL gets copied to the build directory I've added this to automate this step (where my-project is the project name) ``` add_custom_command(TARGET my-project POST_BUILD COMMAND ${CMAKE_COMMAND} -E copy -t $<TARGET_FILE_DIR:my-project> $<TARGET_RUNTIME_DLLS:my-project> COMMAND_EXPAND_LISTS ) ``` Rather than manually copying the DLL (which I'll probably forget when setting the project up on a new machine).

Amazing video, but how to actually build such cmake libraries that actually produces this kind of install & cmake also produce the config.cmake automaticly

Is it possible to be as efficient in terminal lldb as a gui based debugger? To me it just seems annoying having to prompt everytime where as something like visual studio displays all the information while your stepping through.

Why does Renderer need to inherit from App? Wondering if it would be best to overload the App.run function to take a type render1 or render2 pointer. No inheritance needed.

Thank you so much for this video. It helped A LOT.

Thank you. Nice to know how to do this with Visual Studio. I'm just wondering if you will come out with a static linked tutorial in the future? This way we don't have to worry about including DLL's with the exe.

why don't you upload the code, people have a hard time moving back and fort to read your code.

8:53 9:53 11:06 mainapp 10:20 mainapp 13:55

Excellent explanation!!! In my case, cleared up a lot of confusion. Also the segment on adding a NEW profile in the Windows Terminal was very helpful.

I followed all your steps and the CMake files generate fine but when I try to include SDL.h in the main file I get a "Cannot open include file" error. Do you know what could be causing this issue? Edit: Adding #define SDL_MAIN_HANDLED to the top of my main file fixed this but I don't know what that does specifically if anyone can explain that

Thanks for the great tutorial! If you had experience, could you also do a tutorial using the IDE from JetBrains? In conjunction with the clang compiler and ninja generator. I think there is not enough information on the internet right now on how to build anything via cmake on windows and your knowledge is a treasure.

Great video. Thank you!

Good and clear explanation

What if you do this? Let's say in the engine we only use the renderer interface - the header file, that is, essentially pointers to functions. And for each backend we implement it in dll. Thus, when starting the application, we decide which dll needs to be loaded, and if we want to use another one, we can ask to restart the application. This is how we solve the problem of virtual functions. We do not solve the problem of the minimum application size, but for example, for mobile platforms we can supply only one dll that will be used there. And we do not load all dlls into RAM, just one. What do you think about this?

Thank you!!

Thanks a lot!!!

Thank you <3

Thank you for your guidance

Very helpful

Nice tutorial!! Really helpfull and valuable!!

I followed everything but I get this error: Could not find a configuration file for package "SDL2" that is compatible 1> [CMake] with requested version "".