Cannot open include file: 'asio.hpp': No such file or directory

[ToyinIku]

After running cmake --build build --config Release --target ovpncli I get the error below. Is there another system variable that needs to be defined or something else I need to download?

C:\Users\toyiniku\Documents\core\cmake\..\openvpn/io/io.hpp(28,10): fatal error C1083: Cannot open include file: 'asio.hpp': No such file or directory [C:\Users\toyiniku\Documents\core\build\test\ovpncli\ovpncli.vcxproj]

[ToyinIku]

This is on Windows 10

[OPstriker]

Did you install asio using vcpkg?

[DavidLee528]

When I compile on Ubuntu 20.04 with 'boost', i encountered:

david@ThinkpadT480s:~/tmp/openvpn3/build$ l
CMakeCache.txt  CMakeFiles/  Makefile  bin/  client/  cmake_install.cmake  lib/  test/
david@ThinkpadT480s:~/tmp/openvpn3/build$ make -j8
[  3%] Building C object test/ovpncli/CMakeFiles/xkey.dir/__/__/openvpn/openssl/xkey/xkey_helper.c.o
[  3%] Building CXX object test/unittests/googletest-build/googletest/CMakeFiles/gtest.dir/src/gtest-all.cc.o
[  6%] Building CXX object test/ssl/CMakeFiles/proto.dir/proto.cpp.o
[  6%] Building C object test/ovpncli/CMakeFiles/xkey.dir/__/__/openvpn/openssl/xkey/xkey_provider.c.o
[  8%] Linking C static library libxkey.a
[  8%] Built target xkey
[  9%] Building CXX object test/ovpncli/CMakeFiles/ovpncli.dir/cli.cpp.o
In file included from /home/david/tmp/openvpn3/cmake/../openvpn/buffer/buffer.hpp:59,
                 from /home/david/tmp/openvpn3/cmake/../openvpn/common/unicode.hpp:36,
                 from /home/david/tmp/openvpn3/cmake/../openvpn/common/file.hpp:33,
                 from /home/david/tmp/openvpn3/test/ssl/proto.cpp:183:
/home/david/tmp/openvpn3/cmake/../openvpn/io/io.hpp:28:10: fatal error: asio.hpp: No such file or directory
   28 | #include <asio.hpp>
      |          ^~~~~~~~~~
compilation terminated.
make[2]: *** [test/ssl/CMakeFiles/proto.dir/build.make:76: test/ssl/CMakeFiles/proto.dir/proto.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:390: test/ssl/CMakeFiles/proto.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
In file included from /home/david/tmp/openvpn3/cmake/../client/ovpncli.cpp:30,
                 from /home/david/tmp/openvpn3/test/ovpncli/cli.cpp:63:
/home/david/tmp/openvpn3/cmake/../openvpn/io/io.hpp:28:10: fatal error: asio.hpp: No such file or directory
   28 | #include <asio.hpp>
      |          ^~~~~~~~~~
compilation terminated.
make[2]: *** [test/ovpncli/CMakeFiles/ovpncli.dir/build.make:76: test/ovpncli/CMakeFiles/ovpncli.dir/cli.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:364: test/ovpncli/CMakeFiles/ovpncli.dir/all] Error 2
[ 11%] Linking CXX static library ../../../../lib/libgtest.a
[ 11%] Built target gtest
make: *** [Makefile:136: all] Error 2

And i changed all #include <asio.hpp> to #include <boost/asio.hpp> by using commands below:

david@ThinkpadT480s:~/tmp/openvpn3$ find . -type f -name "*" | xargs grep "#include <asio.hpp>"
./openvpn/io/io.hpp:#include <asio.hpp>
./test/unittests/core_tests.cpp:#include <asio.hpp>
./test/unused:#include <asio.hpp>
david@ThinkpadT480s:~/tmp/openvpn3$ vim ./openvpn/io/io.hpp
david@ThinkpadT480s:~/tmp/openvpn3$ vim ./test/unittests/core_tests.cpp
david@ThinkpadT480s:~/tmp/openvpn3$ vim ./test/unused

The problem solved.