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Linking with OpenSSL
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Linking with OpenSSL


  • Subject: Linking with OpenSSL
  • From: Alexander Hartner <email@hidden>
  • Date: Fri, 20 Jun 2008 21:35:54 +0100

I am using gSoap to integrate with a webservice. To enable SSL support I had to add this flag to the process -DWITH_OPENSSL

g++ -DWITH_OPENSSL myclient.cpp stdsoap.cpp soapC.cpp soapClient.cpp - lxnet -lsocket -lnsl -lssl -lcrypto

as described here :

http://www.cs.fsu.edu/~engelen/soapdoc2.html#tth_sEc18.20

I set both the "Other C Flags" and "Other C++ Flags" to -DWITH_OPENSSL in XCode

However since I added this I now get errors linking.

Undefined symbols:
  "_SSL_free", referenced from:
      _tcp_disconnect in stdsoap2.o
      _tcp_disconnect in stdsoap2.o
      _tcp_disconnect in stdsoap2.o
  "_X509_EXTENSION_get_object", referenced from:
      _tcp_connect in stdsoap2.o
  "_SSL_accept", referenced from:
      _soap_ssl_accept in stdsoap2.o
  "_SSL_get_error", referenced from:
      _frecv in stdsoap2.o
      _soap_ssl_error in stdsoap2.o
      _fsend in stdsoap2.o
      _tcp_connect in stdsoap2.o
      _soap_ssl_accept in stdsoap2.o
  "_SSL_get_peer_certificate", referenced from:
      _tcp_connect in stdsoap2.o
      _soap_ssl_accept in stdsoap2.o
...

It seems to me that the linker can't find the OpenSSL libraries. I already added the Security Framework to my application, this did not make any difference.

Any suggestion what I need to configure to get this to compile.

Thanks in advance
Alex



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