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Common Errors

CA path only supported by ...

CA path only supported by OpenSSL, GnuTLS or mbed TLS.  Set CURL_CA_PATH=none or enable one of those TLS backends.

libCurl couldn't set the CURL_CA_PATH variable as it's not supported for the TLS backend that will be used.

The easiest way to fix this is to install libCurl from a package manager. If that doesn't fix it, you'll need to enable a TLS backend for libCurl.


No CMAKE_CXX_COMPILER could be found.

Tell CMake where to find the compiler by setting either the environment variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path to the compiler, or to the compiler name if it is in the PATH.

Usually this means you don't have a compiler installed. GCC, Clang, or MSVC are recommend. You can check if you have them installed by run the compiler's command in the terminal. If you have a compiler installed, set the environment variable CXX to the command for the C++ compiler or the path to the C++ compiler.

Could NOT find OpenSSL, ...

Could NOT find OpenSSL, try to set the path to OpenSSL root folder in the

If you haven't installed OpenSSL, please do so, as instructed in the setup guide. If you used VCPKG to install openSSL, set the CMake toolchain file setting in your CMake Interface. You can set this using Command Arguments. Or in Visual Studio with CMake, this setting is in the CMake Settings Menu.

If you are still getting this error, find where openSSL is installed and go to your CMake Settings to set the CMake variable OPENSSL_ROOT_DIR to the absolute path to that folder. Make sure that if you are compiling for x86 that you are pointing to folder with the x86 version, the same goes for all CPUs. Make sure that this folder has a include folder and a lib folder, because overwise, it's a sign that you have the wrong version. For VCPKG, this should be vcpkg\installed\x86-windows or vcpkg\installed\x64-windows. It can also be in C:\OpenSSL-Win32 or C:\Program Files\OpenSSL-Win64.

sleepy-discord/CMakeLists.txt (add_subdirectory)

CMake Error at dependencies/sleepy-discord/CMakeLists.txt:176 (add_subdirectory):
The source directory


does not contain a CMakeLists.txt file.

Usually this means, that something went wrong with the download for one of the library. The easiest solution is to delete the CMakeCache.txt in your build folder and running CMake again. If you want a different solution that would be to have CMake only download and configure that one lib, you can do this by open the CMakeCache.txt and removing the lib-name_BINARY_DIR:STATIC and lib-name_SOURCE_DIR:STATIC from the file. After that, save the file. Now run Cmake with AUTO_DOWNLOAD_LIBRARY:BOOL set to True, you can set this to False afterwards.


  Could not find a package configuration file provided by "unofficial-sodium" with any of the following names:


This error only happens on windows as on Unix, make is used to compile libSodium but on windows things are a bit different. However, you can install libSodium using the unofficial sodium package from VCPKG.

4004 Authentication failed.

Error 4004: authentication failed - The account token sent with your identify payload is incorrect.

Take a look at this example:

Client client("token", SleepyDiscord::USER_CONTROLED_THREADS);

The "token" isn't a valid token. As such, Discord can't identify the account you like to use. Please go to the Discord API Docs on how to get a valid token.