Build error of release 3.1.0 using CMake and MinGW 11.2

[8Observer8]

Configuration requires to add the OpenSSL path to the Path variable:

Could NOT find OpenSSL, try to set the path to OpenSSL root folder in the system variable OPENSSL_ROOT_DIR (missing: OPENSSL_CRYPTO_LIBRARY) (found version "1.1.1q")

I added it. Configuration works without problems:

cmake -G "MinGW Makefiles" --fresh -S . -B dist -DCMAKE_INSTALL_PREFIX=E:/libs/socket.io-client-cpp-3.1.0-prefix

CMake Deprecation Warning at CMakeLists.txt:1 (cmake_minimum_required):
  Compatibility with CMake < 3.5 will be removed from a future version of
  CMake.

  Update the VERSION argument <min> value or use a ...<max> suffix to tell
  CMake that the project does not need compatibility with older versions.


-- The C compiler identification is GNU 11.2.0
-- The CXX compiler identification is GNU 11.2.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: C:/Qt/Tools/mingw1120_64/bin/gcc.exe - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: C:/Qt/Tools/mingw1120_64/bin/c++.exe - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- not define build type, set to release
-- Found OpenSSL: C:/Qt/Tools/OpenSSL-1.1.1j/Win_x64/bin/ssl_1.1/x86_64/libcrypto.a (found version "1.1.1u")
-- Configuring done (3.6s)
-- Generating done (0.1s)
-- Build files have been written to: E:/libs/socket.io-client-cpp-3.1.0/dist

But when I try to build I have errors:

cmake --build dist -j4

[ 10%] Building CXX object CMakeFiles/sioclient_tls.dir/src/sio_client.cpp.obj
[ 20%] Building CXX object CMakeFiles/sioclient.dir/src/sio_client.cpp.obj
[ 30%] Building CXX object CMakeFiles/sioclient.dir/src/sio_socket.cpp.obj
[ 40%] Building CXX object CMakeFiles/sioclient_tls.dir/src/sio_socket.cpp.obj
In file included from In file included from                                                                             ent-cpp-3.1.0\src\sio_client.cpp:8                                                                                      :                                                                                                                        sio_client_impl.h:14:10:                                                                                                   14 | #include websocketpp/client.hpp: No such file or directory
   14 | #include                                                                                                              |
      |          ^~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

ccoommppiillaattiioonn  tteerrmmiinnaatteedd..

mingw32-make.exe[2]: *** [CMakeFiles\sioclient.dir\build.make:76: CMakeFiles/sioclient.dir/src/sio_client.cpp.obj] Error 1
mingw32-make.exe[2]: *** Waiting for unfinished jobs....
mingw32-make.exe[2]: *** [CMakeFiles\sioclient_tls.dir\build.make:76: CMakeFiles/sioclient_tls.dir/src/sio_client.cpp.obj] Error 1
mingw32-make.exe[2]: *** Waiting for unfinished jobs....
[ 50%] Building CXX object CMakeFiles/sioclient_tls.dir/src/internal/sio_client_impl.cpp.obj
In file included from E:\libs\socket.io-client-cpp-3.1.0\src\internal\sio_client_impl.cpp:9:
E:\libs\socket.io-client-cpp-3.1.0\src\internal\sio_client_impl.h:14:10: fatal error: websocketpp/client.hpp: No such file or directory
   14 | #include <websocketpp/client.hpp>
      |          ^~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
mingw32-make.exe[2]: *** [CMakeFiles\sioclient_tls.dir\build.make:106: CMakeFiles/sioclient_tls.dir/src/internal/sio_client_impl.cpp.obj] Error 1
In file included from In file included from                                                                             ent-cpp-3.1.0\src\sio_socket.cpp:3                                                                                      :
E:\libs\socket.io-client-cpp-3.1.0\src\internal/sio_client_impl.h:14:10:E:\libs\socket.io-client-cpp-3.1.0\src\internal/sio_client_impl.h:14:10:  fatal error: fatal error: websocketpp/client.hpp: No such file or directory
   14 | #include websocketpp/client.hpp: No such file or directory
   14 | #include                                                                                                              |          ^~~~~~~~~~~~~~~~~~~~~~~~
com  lat
      |          ion t   inat^~~~~~~~~~~~~~~~~~~~~~~~e .

compilation terminated.
mingw32-make.exe[2]: *** [CMakeFiles\sioclient_tls.dir\build.make:91: CMakeFiles/sioclient_tls.dir/src/sio_socket.cpp.obj] Error 1
mingw32-make.exe[2]: *** [CMakeFiles\sioclient.dir\build.make:91: CMakeFiles/sioclient.dir/src/sio_socket.cpp.obj] Error 1
mingw32-make.exe[1]: *** [CMakeFiles\Makefile2:110: CMakeFiles/sioclient_tls.dir/all] Error 2
mingw32-make.exe[1]: *** Waiting for unfinished jobs....
mingw32-make.exe[1]: *** [CMakeFiles\Makefile2:84: CMakeFiles/sioclient.dir/all] Error 2
mingw32-make.exe: *** [Makefile:135: all] Error 2

[8Observer8]

The same error the mater branch socket.io-client-cpp-master. But compilation is not stopped on the error:

cmake --build dist -j4

[  1%] Building CXX object CMakeFiles/sioclient.dir/src/sio_client.cpp.obj
[  2%] [  3%] Building CXX object CMakeFiles/sioclient.dir/src/sio_socket.cpp.obj
Building CXX object CMakeFiles/sioclient_tls.dir/src/sio_client.cpp.obj
[  3%] Building CXX object _deps/catch2-build/src/CMakeFiles/Catch2.dir/catch2/benchmark/catch_chronometer.cpp.obj
In file included from E:\libs\socket.io-client-cpp-master\src\sio_socket.cpp:3:
E:\libs\socket.io-client-cpp-master\src\internal/sio_client_impl.h:14:10: fatal error: websocketpp/client.hpp: No such file or directory
   14 | #include In file included from                                                                                        |          :
                                                                                                                        In file included from  c mE:\libs\socket.io-client-cpp-master\src\sio_client.cpp:8fatal error: p :
lwebsocketpp/client.hpp: No such file or directory
   14 | #include a                                                                         t                        i o
      |                         t                        e                                                                 14 | #include r
 ci<websocketpp/client.hpp>on ap
      |          tie da^~~~~~~~~~~~~~~~~~~~~~~~.t                                                                       i
oconm pitelramitniatoend .t
erminated.
mingw32-make.exe[2]: *** [CMakeFiles\sioclient.dir\build.make:91: CMakeFiles/sioclient.dir/src/sio_socket.cpp.obj] Error 1
mingw32-make.exe[2]: *** Waiting for unfinished jobs....
mingw32-make.exe[2]: *** [CMakeFiles\sioclient.dir\build.make:76: CMakeFiles/sioclient.dir/src/sio_client.cpp.obj] Error 1
mingw32-make.exe[2]: *** [CMakeFiles\sioclient_tls.dir\build.make:76: CMakeFiles/sioclient_tls.dir/src/sio_client.cpp.obj] Error 1
mingw32-make.exe[2]: *** Waiting for unfinished jobs....
mingw32-make.exe[1]: *** [CMakeFiles\Makefile2:891: CMakeFiles/sioclient.dir/all] Error 2
mingw32-make.exe[1]: *** Waiting for unfinished jobs....
[  4%] Building CXX object CMakeFiles/sioclient_tls.dir/src/sio_socket.cpp.obj
[  5%] Building CXX object _deps/catch2-build/src/CMakeFiles/Catch2.dir/catch2/benchmark/detail/catch_benchmark_function.cpp.obj
[  6%] Building CXX object _deps/catch2-build/src/CMakeFiles/Catch2.dir/catch2/benchmark/detail/catch_run_for_at_least.cpp.obj
In file included from E:\libs\socket.io-client-cpp-master\src\sio_socket.cpp:3:
E:\libs\socket.io-client-cpp-master\src\internal/sio_client_impl.h:14:10: fatal error: websocketpp/client.hpp: No such file or directory
   14 | #include <websocketpp/client.hpp>
      |          ^~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
mingw32-make.exe[2]: *** [CMakeFiles\sioclient_tls.dir\build.make:91: CMakeFiles/sioclient_tls.dir/src/sio_socket.cpp.obj] Error 1
mingw32-make.exe[1]: *** [CMakeFiles\Makefile2:917: CMakeFiles/sioclient_tls.dir/all] Error 2
[  7%] Building CXX object _deps/catch2-build/src/CMakeFiles/Catch2.dir/catch2/benchmark/detail/catch_stats.cpp.obj
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mingw32-make.exe: *** [Makefile:145: all] Error 2

[PedroCorcaque]

Hey @8Observer8 , how are you?

Did you use the --recursive flag when cloning the socket.io-client-cpp repository? The error message you provided suggests that the websocketpp module wasn't found, which is a submodule of this project.

E:\libs\socket.io-client-cpp-3.1.0\src\internal\sio_client_impl.h:14:10: fatal error: websocketpp/client.hpp: No such file or directory
   14 | #include <websocketpp/client.hpp>

I had the same problem when I cloned the project without using the --recursive flag.