topic Re: /usr/ccs/bin/ld: server.cxx: Not a valid object file (invalid system id) in Operating System - Linux

/usr/ccs/bin/ld: server.cxx: Not a valid object file (invalid system id)

msbinu — Thu, 27 Apr 2006 02:08:53 GMT

Hi All,

I m trying to write a clinet -server program using openssl.I managed to compile openssl .But when I try to compile the server.cxx ( which I have created ) I m getting the following error

/usr/ccs/bin/ld: server.cxx: Not a valid object file (invalid system id)

Here is the command which I have used to compile the same

cc -I /home/myuserid/openssl-0.9.7-stable-SNAP-20060421/include -L . -lcrypto -lssl -o server server.cxx
Can anyone help me to get rid of this error

Regards
Binu

Re: /usr/ccs/bin/ld: server.cxx: Not a valid object file (invalid system id)

Mike Stroyan — Thu, 27 Apr 2006 11:11:17 GMT

You need aCC instead of cc for a C++ file like server.cxx. The cc compiler only handles C files. When it saw the server.cxx argument cc treated it like an object file and passed it on to the linker.

Re: /usr/ccs/bin/ld: server.cxx: Not a valid object file (invalid system id)

msbinu — Thu, 27 Apr 2006 11:15:41 GMT

Thanx mike , but if I use aCC I will get the following error

aCC -I/home/myuserid/openssl-0.9.7-stable-SNAP-20060421/include -L . -lcrypto -lssl -o server server.cxx

Warning 749: "server.cxx", line 69 # The cast from 'sockaddr_in *' to 'sockaddr *' is performed as a
'reinterpret_cast'. This operation is non-portable and potentially unsafe.
bind(sd, (struct sockaddr*)&addr, sizeof(addr)); /* bind it */
^^^^^^^^^^^^^^^^^^
/usr/ccs/bin/ld: (Warning) At least one PA 2.0 object file (server.o) was detected. The linked output may not run on a PA 1.x system.
/usr/ccs/bin/ld: Unsatisfied symbols:
OPENSSL_add_all_algorithms_noconf (code)
SSL_accept (code)
SSL_set_fd (code)
SSL_new (code)
SSL_CTX_new (code)
SSL_get_fd (code)
cma_close (code)
SSL_write (code)
SSL_CTX_use_PrivateKey_file (code)
SSL_load_error_strings (code)
SSL_CTX_check_private_key (code)
SSLv2_server_method (code)
SSL_CTX_use_certificate_file (code)
cma_socket (code)
cma_accept (code)
SSL_read (code)
SSL_free (code)

Re: /usr/ccs/bin/ld: server.cxx: Not a valid object file (invalid system id)

Mike Stroyan — Thu, 27 Apr 2006 15:22:45 GMT

The warning about reinterpret_cast can be avoided by using an explicit reinterpret_cast like this-
bind(sd, reinterpret_cast(&addr), sizeof(addr));

The missing SSL_* symbols can be found by rearranging the compile line to put the source code before the libraries that provide those symbols-

aCC -I/home/myuserid/openssl-0.9.7-stable-SNAP-20060421/include server.cxx -L . -lcrypto -lssl -o server

The missing cma_* symbols indicate that you are using threading headers. It also indicates that you are using an old system that defaults to the user-space libcma threading instead of the current kernel libpthread threading. If you had a new enough aCC you could compile and link with -mt to get the right defines and libraries to use threads. You may have an old aCC that does not implement -mt. In that case you need to pass specific options for compiling files and for linking. Linking with -lcma will start to fix your threading problems. But you really need to get all the options right to avoid runtime problems.

Use "aCC -V" to see what version of aCC you have. Go to http://www.hp.com/go/c++ and the "Review documentation" link there to see the "Programmer's Guide" for your version of the compiler. Read the section on "Threads and Parallel Processing" from the guide.

Re: /usr/ccs/bin/ld: server.cxx: Not a valid object file (invalid system id)

msbinu — Fri, 28 Apr 2006 06:18:57 GMT

Thanks a lot mike ..

It helped me a lot ...
Actually After trying your suggestion I was getting the following error ...

/usr/ccs/bin/ld: Unsatisfied symbols:
PEM_read_bio_X509 (code)
X509_STORE_get_by_subject (code)
EVP_enc_null (code)
X509_VERIFY_PARAM_set_purpose (code)
X509_VERIFY_PARAM_set_trust (code)
X509_STORE_CTX_init (code)
PEM_read_bio_RSAPrivateKey (code)
COMP_CTX_free (code)
OPENSSL_DIR_end (code)
BIO_f_buffer (code)
X509_STORE_CTX_get_ex_new_index (code)
X509_STORE_CTX_set_default (code)
X509_STORE_CTX_cleanup (code)
X509_STORE_set_default_paths (code)

After that I cnhanged the order of the library files ..
ie , lssl i gave first and then lcrypto .. then it worked :)

Thanks a lot

Regards
Binu