I am developing an monolithic C++ app that uses the LIBCURL to make some file transfers via SFTP protocol. However, in my app I need always to manually build the static libs of the libcurl and libssh2.
I made an shell script in order to automate the third-libraries generation (i.e., LIBCURL e LIBSSH2). My script looks like this:
# Initially we shall define some important paths definitions
OPENSSL_MYAPP_RELEASE=$HOME/openssl-1.0.2o/release64/lib/
OPENSSL_MYAPP_DEBUG=$HOME/openssl-1.0.2o/debug64/lib
OPENSSL_MYAPP_INCLUDE=$HOME/openssl-1.0.2o/release64/include/
ZLIB_MYAPP_RELEASE=$HOME/zlib/linux64/release/
ZLIB_MYAPP_DEBUG=$HOME/zlib/linux64/debug/
ZLIB_MYAPP_INCLUDE=$HOME/zlib/linux32/include/
SSH2_MYAPP_RELEASE=$HOME/libssh2/build/linux64/release/
SSH2_MYAPP_DEBUG=$HOME/libssh2/build/linux64/debug/
cd $HOME/libssh2
./configure --enable-static --with-libssl-prefix=$OPENSSL_MYAPP_RELEASE \
--disable-debug --prefix=$SSH2_MYAPP_RELEASE && \
make && \
make install
cd $HOME/curl-7.30
./configure --disable-debug --enable-static --disable-shared \
--disable-ldap --without-libidn --with-zlib=$ZLIB_MYAPP_RELEASE \
--with-ssl=$OPENSSL_MYAPP_RELEASE \
--with-libssh2=$SSH2_MYAPP_RELEASE \
--prefix=$HOME/curl-7.30.0/build/linux64/release/ && \
make && \
make install
The static libraries of the LIBSSH2 and LIBCURL are generated sucessfully but when I compile my application by linking my generated LIBSSH2 and LIBCURL I am getting a lot of undefined references in some important LIBSSH2 methods such as libssh2_init().
When I disassembled the generated LIBCURL, with nm -a libcurl.a, I noticed that there are a lot of undefined symbols in the LIBSSH2 methods.
What could be wrong with my generated script? The linker error messages are something like these ones:
easy.c:(.text+0xe8): undefined reference to `libssh2_init'
easy.c:(.text+0x10c): undefined reference to `libssh2_init'
easy.c:(.text+0x223): undefined reference to `libssh2_exit'
ssh.c:(.text+0x4ac): undefined reference to `libssh2_session_block_directions'
ssh.c:(.text+0x4fa): undefined reference to `libssh2_sftp_write'
ssh.c:(.text+0x58a): undefined reference to `libssh2_sftp_read'
ssh.c:(.text+0x5e6): undefined reference to `libssh2_channel_write_ex'
ssh.c:(.text+0x676): undefined reference to `libssh2_channel_read_ex'
ssh.c:(.text+0x960): undefined reference to `libssh2_session_set_blocking'
ssh.c:(.text+0x97a): undefined reference to `libssh2_session_handshake'
ssh.c:(.text+0x9bb): undefined reference to `libssh2_hostkey_hash'
ssh.c:(.text+0xa4e): undefined reference to `libssh2_session_hostkey'
ssh.c:(.text+0xaa9): undefined reference to `libssh2_knownhost_check'
ssh.c:(.text+0xbc5): undefined reference to `libssh2_knownhost_free'
ssh.c:(.text+0xbe5): undefined reference to `libssh2_agent_disconnect'
ssh.c:(.text+0xc05): undefined reference to `libssh2_agent_free'
ssh.c:(.text+0xc37): undefined reference to `libssh2_session_free'
ssh.c:(.text+0xe01): undefined reference to `libssh2_channel_free'
ssh.c:(.text+0xe44): undefined reference to `libssh2_session_disconnect_ex'
Any ideas/suggestions in how to fix the static libraries generation script?
