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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"cmake fails for examples/Console: \"examples/Console/sioclientConfig.cmake.in does not exist.\"","articleBody":"I am using WSL Ubuntu 24.04.2 LTS on Windows 11.\n\nI followed the \"With CMake\" installation instructions as described here: https://github.com/socketio/socket.io-client-cpp/blob/da779141a7379cc30c870d48295033bc16a23c66/INSTALL.md#with-cmake\n\nI am on commit da779141a7379cc30c870d48295033bc16a23c66\n\nI try to build the `examples/Console` example using cmake. It is telling me `examples/Console/sioclientConfig.cmake.in` is missing.\n\n```\npaul@DESKTOP-E3P2CL2:~/Programming/generals.io/socket.io-client-cpp/examples/Console$ cmake --version\ncmake version 3.28.3\n\nCMake suite maintained and supported by Kitware (kitware.com/cmake).\npaul@DESKTOP-E3P2CL2:~/Programming/generals.io/socket.io-client-cpp/examples/Console$ mkdir build\npaul@DESKTOP-E3P2CL2:~/Programming/generals.io/socket.io-client-cpp/examples/Console$ cd build/\npaul@DESKTOP-E3P2CL2:~/Programming/generals.io/socket.io-client-cpp/examples/Console/build$ cmake ..\nCMake Warning (dev) in CMakeLists.txt:\n  No project() command is present.  The top-level CMakeLists.txt file must\n  contain a literal, direct call to the project() command.  Add a line of\n  code such as\n\n    project(ProjectName)\n\n  near the top of the file, but after cmake_minimum_required().\n\n  CMake is pretending there is a \"project(Project)\" command on the first\n  line.\nThis warning is for project developers.  Use -Wno-dev to suppress it.\n\nCMake Warning (dev) in CMakeLists.txt:\n  cmake_minimum_required() should be called prior to this top-level project()\n  call.  Please see the cmake-commands(7) manual for usage documentation of\n  both commands.\nThis warning is for project developers.  Use -Wno-dev to suppress it.\n\n-- The C compiler identification is GNU 13.3.0\n-- The CXX compiler identification is GNU 13.3.0\n-- Detecting C compiler ABI info\n-- Detecting C compiler ABI info - done\n-- Check for working C compiler: /usr/bin/cc - skipped\n-- Detecting C compile features\n-- Detecting C compile features - done\n-- Detecting CXX compiler ABI info\n-- Detecting CXX compiler ABI info - done\n-- Check for working CXX compiler: /usr/bin/c++ - skipped\n-- Detecting CXX compile features\n-- Detecting CXX compile features - done\nCMake Deprecation Warning at CMakeLists.txt:1 (cmake_minimum_required):\n  Compatibility with CMake \u003c 3.5 will be removed from a future version of\n  CMake.\n\n  Update the VERSION argument \u003cmin\u003e value or use a ...\u003cmax\u003e suffix to tell\n  CMake that the project does not need compatibility with older versions.\n\n\n-- Performing Test CMAKE_HAVE_LIBC_PTHREAD\n-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success\n-- Found Threads: TRUE\n-- Setting build type to 'Release' as none was specified.\n-- Could NOT find OpenSSL, try to set the path to OpenSSL root folder in the system variable OPENSSL_ROOT_DIR (missing: OPENSSL_CRYPTO_LIBRARY OPENSSL_INCLUDE_DIR)\nCMake Error: File /home/paul/Programming/generals.io/socket.io-client-cpp/examples/Console/sioclientConfig.cmake.in does not exist.\nCMake Error at /usr/share/cmake-3.28/Modules/CMakePackageConfigHelpers.cmake:344 (configure_file):\n  configure_file Problem configuring file\nCall Stack (most recent call first):\n  /home/paul/Programming/generals.io/socket.io-client-cpp/CMakeLists.txt:155 (configure_package_config_file)\n  CMakeLists.txt:3 (include)\n\n\nCMake Error at /home/paul/Programming/generals.io/socket.io-client-cpp/CMakeLists.txt:176 (add_subdirectory):\n  add_subdirectory given source \"test\" which is not an existing directory.\nCall Stack (most recent call first):\n  CMakeLists.txt:3 (include)\n\n\n--\n-- Configuring incomplete, errors occurred!\n```\n\nI also tried running cmake directly in the `examples/Console` directory (without `cd build`) and the same thing happens.","author":{"url":"https://github.com/Paul-Andre","@type":"Person","name":"Paul-Andre"},"datePublished":"2025-04-15T22:11:21.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/439/socket.io-client-cpp/issues/439"}