Undefined reference to t1sl_steup_key_block when linking OpenSSL

Question

I got a problem of linking an OpenSSL library into an existing project. Where I do get it wrong?

Below are the steps I have followed.

I have downloaded the SSL library, configured and installed it. It gets installed in /usr/local/ssl.

2) I have copied libcrypto.a and libssl.a from /usr/local/ssl/lib into my project, something like /mnt/linux/bla/bla/lib.

3) Then I edit the make file and added path of libssl libcrpto there. The path added is one that is in project like /mnt/linux/bla /bla

3) make

4) build project via slick edit

When it builds I get a long error chain, like

../lib/libssl.a(t1_enc.o) :In function 't1sl_steup_key_block: undefined ref

Now, I guess copying .a files into project could be problem. Is there is any alternative for that or should I use ln -s to link .a files form /usr/local/openssl/lib into my project library folder? Below is the error.

   Debug/FC5/m2pa.o  -ldl -lpthread -ltdapi ../septel/gctlib.lib ../lib/libpq.a ../asn1/lib/libasn1per.a ../mysql/lib/libmysqlclient.a     -L../lib ../asn1/lib/libasn1rt.a -lm -lcrypt -lcrypto -lssl  -rdynamic
../lib/libssl.a(ssl_lib.o): In function `SSL_set_quiet_shutdown':ssl_lib.c:(.text+0x670): multiple definition of `SSL_set_quiet_shutdown'
../mysql/lib/libmysqlclient.a(ssl.o):ssl.cpp:(.text+0x125c): first defined here
/usr/bin/ld: Warning: size of symbol `SSL_set_quiet_shutdown' changed from 45 in ../mysql/lib/libmysqlclient.a(ssl.o) to 12 in ../lib/libssl.a(ssl_lib.o)
../lib/libssl.a(ssl_lib.o): In function `SSL_get_quiet_shutdown':ssl_lib.c:(.text+0x680): multiple definition of `SSL_get_quiet_shutdown'
../mysql/lib/libmysqlclient.a(ssl.o):ssl.cpp:(.text+0x12down' changed from 35 in ../mysql/lib/libmysqlclient.a(ssl.o) to 8 in ../lib/libssl.a(ssl_lib.o)
../lib/libssl.a(ssl_err2.o): In function `SSL_load_error_strings':ssl_err2.c:(.text+0x4): undefined reference to `ERR_load_crypto_strings'
../lib/libssl.a(ssl_algs.o): In function `SSL_library_init':ssl_algs.c:(.text+0x4): undefined reference to `EVP_des_cbc'
:ssl_algs.c:(.text+0xc): undefined reference to `EVP_add_cipher'
:ssl_algs.c:(.text+0x11): undefined reference to `EVP_des_ede3_cbc'
:ssl_algs.c:(.text+0x19): undefined reference to `EVP_add_cipher'
:ssl_algs.c:(.text+0x1e): undefined reference to `EVP_idea_cbc'

Answer 1

Have you tried using the libssl and libcrypto already installed in your /usr/lib directory (assuming you've installed the dev packages for both)? Once that compiles and runs without error using the default install, you can build your new libssl/libcrypto(?) from source, install to usr/local, and rebuild using the usr/local versions of the libraries.

Answer 2

You need to add the flag -lssl and -lcrypto in your makefile'

For example:

gcc somefile.c -o someprogram -lssl -lcrypto