Installing libssh for ssh call on C.
Ubuntu 13.04
apt-get install gcc --fine
apt-get install cmake -fine
wget openssl-1.0.1e.tar.gz --fine
tar -xzvf openssl-1.0.1e.tar.gz --fine
./config --prefix=/usr/local --openssldir=/usr/local/openssl --fine
make --fine
make test --fine
make install --fine
wget zlib-1.2.8.tar.gz --fine
./configure; make test --fine
make install --fine
apt-get install dev-essential
now to install libssh.org
cmake -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=Debug .. --fine
-- The C compiler identification is GNU 4.7.3
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Performing Test WITH_FPIC
-- Performing Test WITH_FPIC - Success
-- Performing Test WITH_STACK_PROTECTOR
-- Performing Test WITH_STACK_PROTECTOR - Success
-- Found ZLIB: /usr/local/include
-- Found PkgConfig: /usr/bin/pkg-config (found version "0.26")
-- checking for module 'openssl'
-- found openssl, version 1.0.1e
-- Found OpenSSL: /usr/local/lib/libssl.a;/usr/local/lib/libcrypto.a
-- Looking for include file pthread.h
-- Looking for include file pthread.h - found
-- Looking for pthread_create
-- Looking for pthread_create - not found
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE
-- checking for module 'heimdal-gssapi'
-- package 'heimdal-gssapi' not found
-- Could NOT find GSSAPI (missing: GSSAPI_LIBRARIES GSSAPI_INCLUDE_DIR)
-- Performing Test WITH_VISIBILITY_HIDDEN
-- Performing Test WITH_VISIBILITY_HIDDEN - Success
-- Looking for argp.h
-- Looking for argp.h - found
-- Looking for pty.h
-- Looking for pty.h - found
-- Looking for termios.h
-- Looking for termios.h - found
-- Looking for unistd.h
-- Looking for unistd.h - found
-- Looking for openssl/aes.h
-- Looking for openssl/aes.h - found
-- Looking for openssl/blowfish.h
-- Looking for openssl/blowfish.h - found
-- Looking for openssl/des.h
-- Looking for openssl/des.h - found
-- Looking for openssl/ecdh.h
-- Looking for openssl/ecdh.h - found
-- Looking for openssl/ec.h
-- Looking for openssl/ec.h - found
-- Looking for openssl/ecdsa.h
-- Looking for openssl/ecdsa.h - found
-- Looking for strncpy
-- Looking for strncpy - found
-- Looking for vsnprintf
-- Looking for vsnprintf - found
-- Looking for snprintf
-- Looking for snprintf - found
-- Looking for poll
-- Looking for poll - found
-- Looking for select
-- Looking for select - found
-- Looking for getaddrinfo
-- Looking for getaddrinfo - found
-- Looking for ntohll
-- Looking for ntohll - not found
-- Looking for htonll
-- Looking for htonll - not found
-- Looking for clock_gettime in rt
-- Looking for clock_gettime in rt - found
-- Looking for forkpty in util
-- Looking for forkpty in util - found
-- Looking for cfmakeraw
-- Looking for cfmakeraw - found
-- Looking for strtoull
-- Looking for strtoull - found
-- Looking for __strtoull
-- Looking for __strtoull - not found
-- Performing Test HAVE_GCC_THREAD_LOCAL_STORAGE
-- Performing Test HAVE_GCC_THREAD_LOCAL_STORAGE - Success
-- Performing Test HAVE_MSC_THREAD_LOCAL_STORAGE
-- Performing Test HAVE_MSC_THREAD_LOCAL_STORAGE - Failed
-- Performing Test HAVE_GCC_VOLATILE_MEMORY_PROTECTION
-- Performing Test HAVE_GCC_VOLATILE_MEMORY_PROTECTION - Success
-- Check if the system is big endian
-- Searching 16 bit integer
-- Looking for sys/types.h
-- Looking for sys/types.h - found
-- Looking for stdint.h
-- Looking for stdint.h - found
-- Looking for stddef.h
-- Looking for stddef.h - found
-- Check size of unsigned short
-- Check size of unsigned short - done
-- Using unsigned short
-- Check if the system is big endian - little endian
-- Could NOT find Doxygen (missing: DOXYGEN_EXECUTABLE)
-- The CXX compiler identification is GNU 4.7.3
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- ********************************************
-- ********** libssh build options : **********
-- zlib support: ON
-- libgcrypt support: OFF
-- SSH-1 support: OFF
-- SFTP support: ON
-- Server support : ON
-- GSSAPI support : 0
-- Pcap debugging support : ON
-- With static library: OFF
-- Unit testing: OFF
-- Client code Unit testing: OFF
-- Public API documentation generation
-- Benchmarks: OFF
-- ********************************************
-- Configuring done
-- Generating done
-- Build files have been written to: /root/libssh/libssh-0.6.0rc1/build
****Now when i tryin to run
make or make install****
Scanning dependencies of target ssh_shared
[ 1%] Building C object src/CMakeFiles/ssh_shared.dir/agent.c.o
[ 2%] Building C object src/CMakeFiles/ssh_shared.dir/auth.c.o
[ 4%] Building C object src/CMakeFiles/ssh_shared.dir/base64.c.o
[ 5%] Building C object src/CMakeFiles/ssh_shared.dir/buffer.c.o
[ 6%] Building C object src/CMakeFiles/ssh_shared.dir/callbacks.c.o
[ 8%] Building C object src/CMakeFiles/ssh_shared.dir/channels.c.o
[ 9%] Building C object src/CMakeFiles/ssh_shared.dir/client.c.o
[ 10%] Building C object src/CMakeFiles/ssh_shared.dir/config.c.o
[ 12%] Building C object src/CMakeFiles/ssh_shared.dir/connect.c.o
[ 13%] Building C object src/CMakeFiles/ssh_shared.dir/dh.c.o
[ 14%] Building C object src/CMakeFiles/ssh_shared.dir/ecdh.c.o
[ 16%] Building C object src/CMakeFiles/ssh_shared.dir/error.c.o
[ 17%] Building C object src/CMakeFiles/ssh_shared.dir/getpass.c.o
[ 18%] Building C object src/CMakeFiles/ssh_shared.dir/init.c.o
[ 20%] Building C object src/CMakeFiles/ssh_shared.dir/kex.c.o
[ 21%] Building C object src/CMakeFiles/ssh_shared.dir/known_hosts.c.o
[ 22%] Building C object src/CMakeFiles/ssh_shared.dir/legacy.c.o
[ 24%] Building C object src/CMakeFiles/ssh_shared.dir/libcrypto.c.o
[ 25%] Building C object src/CMakeFiles/ssh_shared.dir/log.c.o
[ 26%] Building C object src/CMakeFiles/ssh_shared.dir/match.c.o
[ 28%] Building C object src/CMakeFiles/ssh_shared.dir/messages.c.o
[ 29%] Building C object src/CMakeFiles/ssh_shared.dir/misc.c.o
[ 30%] Building C object src/CMakeFiles/ssh_shared.dir/options.c.o
[ 32%] Building C object src/CMakeFiles/ssh_shared.dir/packet.c.o
[ 33%] Building C object src/CMakeFiles/ssh_shared.dir/packet_cb.c.o
[ 34%] Building C object src/CMakeFiles/ssh_shared.dir/packet_crypt.c.o
[ 36%] Building C object src/CMakeFiles/ssh_shared.dir/pcap.c.o
[ 37%] Building C object src/CMakeFiles/ssh_shared.dir/pki.c.o
[ 38%] Building C object src/CMakeFiles/ssh_shared.dir/poll.c.o
[ 40%] Building C object src/CMakeFiles/ssh_shared.dir/session.c.o
[ 41%] Building C object src/CMakeFiles/ssh_shared.dir/scp.c.o
[ 42%] Building C object src/CMakeFiles/ssh_shared.dir/socket.c.o
[ 44%] Building C object src/CMakeFiles/ssh_shared.dir/string.c.o
[ 45%] Building C object src/CMakeFiles/ssh_shared.dir/threads.c.o
[ 46%] Building C object src/CMakeFiles/ssh_shared.dir/wrapper.c.o
[ 48%] Building C object src/CMakeFiles/ssh_shared.dir/pki_crypto.c.o
[ 49%] Building C object src/CMakeFiles/ssh_shared.dir/sftp.c.o
[ 50%] Building C object src/CMakeFiles/ssh_shared.dir/sftpserver.c.o
[ 52%] Building C object src/CMakeFiles/ssh_shared.dir/server.c.o
[ 53%] Building C object src/CMakeFiles/ssh_shared.dir/bind.c.o
[ 54%] Building C object src/CMakeFiles/ssh_shared.dir/gzip.c.o
Linking C shared library libssh.so
[ 54%] Built target ssh_shared
Scanning dependencies of target ssh_threads_shared
[ 56%] Building C object src/threads/CMakeFiles/ssh_threads_shared.dir/pthread.c.o
Linking C shared library libssh_threads.so
[ 56%] Built target ssh_threads_shared
Scanning dependencies of target exec
[ 57%] Building C object examples/CMakeFiles/exec.dir/exec.c.o
[ 58%] Building C object examples/CMakeFiles/exec.dir/authentication.c.o
[ 60%] Building C object examples/CMakeFiles/exec.dir/knownhosts.c.o
[ 61%] Building C object examples/CMakeFiles/exec.dir/connect_ssh.c.o
Linking C executable exec
**../src/libssh.so.4.3.0: undefined reference to `dlopen'
../src/libssh.so.4.3.0: undefined reference to `dlclose'`
../src/libssh.so.4.3.0: undefined reference to `dlerror'
../src/libssh.so.4.3.0: undefined reference to `dlsym'
../src/libssh.so.4.3.0: undefined reference to `dladdr'**
