How to compile cpp on linux with additional library?

Question

linux

mistake

$g++ -I. libsshpp.cpp -o libsshpp
/usr/bin/ld: /tmp/ccHZZCyj.o: in function `ssh::SshException::SshException(ssh_session_struct*)':
libsshpp.cpp:(.text._ZN3ssh12SshExceptionC2EP18ssh_session_struct[_ZN3ssh12SshExceptionC5EP18ssh_session_struct]+0x29): undefined reference to `ssh_get_error_code'
/usr/bin/ld: libsshpp.cpp:(.text._ZN3ssh12SshExceptionC2EP18ssh_session_struct[_ZN3ssh12SshExceptionC5EP18ssh_session_struct]+0x49): undefined reference to `ssh_get_error'
/usr/bin/ld: /tmp/ccHZZCyj.o: in function `ssh::Session::Session()':
libsshpp.cpp:(.text._ZN3ssh7SessionC2Ev[_ZN3ssh7SessionC5Ev]+0xd): undefined reference to `ssh_new'
/usr/bin/ld: /tmp/ccHZZCyj.o: in function `ssh::Session::~Session()':
libsshpp.cpp:(.text._ZN3ssh7SessionD2Ev[_ZN3ssh7SessionD5Ev]+0x17): undefined reference to `ssh_free'
/usr/bin/ld: /tmp/ccHZZCyj.o: in function `ssh::Session::setOption(ssh_options_e, char const*)':
libsshpp.cpp:(.text._ZN3ssh7Session9setOptionE13ssh_options_ePKc[_ZN3ssh7Session9setOptionE13ssh_options_ePKc]+0x2a): undefined reference to `ssh_options_set'
/usr/bin/ld: /tmp/ccHZZCyj.o: in function `ssh::Session::connect()':
libsshpp.cpp:(.text._ZN3ssh7Session7connectEv[_ZN3ssh7Session7connectEv]+0x1a): undefined reference to `ssh_connect'
/usr/bin/ld: /tmp/ccHZZCyj.o: in function `ssh::Session::userauthPublickeyAuto()':
libsshpp.cpp:(.text._ZN3ssh7Session21userauthPublickeyAutoEv[_ZN3ssh7Session21userauthPublickeyAutoEv]+0x24): undefined reference to `ssh_userauth_publickey_auto'
/usr/bin/ld: /tmp/ccHZZCyj.o: in function `ssh::Session::disconnect()':
libsshpp.cpp:(.text._ZN3ssh7Session10disconnectEv[_ZN3ssh7Session10disconnectEv]+0x17): undefined reference to `ssh_disconnect'
collect2: error: ld returned 1 exit status

downloaded the libssh library, tried to compile via g++/gcc with different options, successfully compiled c

-c libsshpp.cpp

, but it throws an error

bash: ./libsshpp: Permission denied

, I tried to give permissions through chmod, but nothing comes out either

bash: ./libsshpp: cannot execute binary file: Exec format error

x64 system, libsshpp is also x64, there are no problems with bitness. That just did not shake, nothing helps.
For the second day I can not solve the problem, wherever I threw these files, I installed the library itself via cmake. Tried on different systems (Parrot/Manjaro).
I hope for your help, because all my ideas are over and even the second page of Google did not help.

Answer 1

https://rtfm.co.ua/c-libssh-primer-ssh-clienta/

gcc -lssh ssh_client_libssh1.c -o ssh_client_libssh1

Answer 2

на убунте проверял

чтиво по флагам дял конфигурирования
https://github.com/libssh2/libssh2/blob/master/docs/INSTALL_AUTOTOOLS

sudo apt-get install gcc g++ pkg-config libncurses5-dev gawk build-essential autotools-dev bison re2c flex gperf libtool automake cmake

cd /home
sudo mkdir test
sudo chmod -R 777 test
wget https://www.libssh2.org/download/libssh2-1.8.2.tar.gz
sudo tar -xzf libssh2-1.8.2.tar.gz
cd libssh2-1.8.2
./buildconf
./configure
make
далее думаю разберетесь