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MQSeries.net Forum Index » IBM MQ API Support » linkage error

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bittu
PostPosted: Tue Feb 28, 2012 6:42 am    Post subject: linkage error Reply with quote

Novice

Joined: 25 Mar 2008
Posts: 22
I am compiling MQAPI.c program in sun OS using below command
gcc -c MQAPI.c -lmqm -lmqmcs -lmqmzse -lsocket -lnsl -ldl


i am getting following exception

gcc: -lmqm: linker input file unused because linking not done
gcc: -lmqmcs: linker input file unused because linking not done
gcc: -lmqmzse: linker input file unused because linking not done
gcc: -lsocket: linker input file unused because linking not done
gcc: -lnsl: linker input file unused because linking not done
gcc: -ldl: linker input file unused because linking not done

Please help me where i am missing
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mqjeff
PostPosted: Tue Feb 28, 2012 7:39 am    Post subject: Reply with quote

Grand Master

Joined: 25 Jun 2008
Posts: 17447
So it's telling you that you gave it options to do both compilation and linking, but didn't tell it to do anything other than compile.

If I understand the errors as you have posted them. Which I might not.

It's not clear if you've posted the full set of exceptions, either. If there are *any* other errors, you should fix those *first* before worrying about these.

Also review http://publib.boulder.ibm.com/infocenter/wmqv7/v7r0/index.jsp?topic=%2Fcom.ibm.mq.csqzal.doc%2Ffg16580_.htm and the parent and sibling topics.
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bittu
PostPosted: Tue Feb 28, 2012 8:17 am    Post subject: Reply with quote

Novice

Joined: 25 Mar 2008
Posts: 22
Now i am getting below exception

gcc MQAPI.c -lmqm -lmqmcs -lmqmzse -lsocket -lnsl -ldl

Undefined first referenced
symbol in file
main /usr/local/lib/gcc/sparc-sun-solaris2.9/3.4.6/crt1.o
ld: fatal: Symbol referencing errors. No output written to a.out
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mqjeff
PostPosted: Tue Feb 28, 2012 9:09 am    Post subject: Reply with quote

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Joined: 25 Jun 2008
Posts: 17447
I can't provide any advice from that set of information.
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rekarm01
PostPosted: Tue Feb 28, 2012 12:44 pm    Post subject: Reply with quote

Grand Master

Joined: 25 Jun 2008
Posts: 1415
[code] tags can make the error message more readable:

bittu wrote:
Now i am getting below exception

Code:
gcc MQAPI.c  -lmqm -lmqmcs -lmqmzse -lsocket -lnsl -ldl

Undefined                       first referenced
 symbol                             in file
main                                /usr/local/lib/gcc/sparc-sun-solaris2.9/3.4.6/crt1.o
ld: fatal: Symbol referencing errors. No output written to a.out

Standard C requires a function definition for main(), when compiling an executable program.
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