Originally posted by: yhlvqz

I used gcc to run lpex3.c example in ILOG cplex

gcc path/lpex3.c -o lpex3.o -c -fPIC -I/path/ILOG/cplex/include
then I use vi to open lpex3.o

but it showed scrambled character.

I am not sure whether lpex3.c run successfully or not and how I can open .o file.Thanks
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Originally posted by: T_O

.o are just (temporary) object files. You have to link your program (paths may differ):

gcc -o lpex3 -L/path/to/cplex/lib/x86-64_sles10_4.1/static_pic lpex3.o -lcplex -lpthread -lm

Then just run lpex3.

Best regards,
Thomas
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Originally posted by: yhlvqz

hi, Thomas

Thanks.

I am trying the compiler as following,

gcc /path/lpex3.c -o lpex3 -L/path/cplex/lib/x86-64_sles10_4.1/static_pic -I/path/cplex/include -lcplex -lpthread -lm

It works. I knew -I/path/cplex/include gave the path for ilcplex/cplex.h.
Would you tell me why -L/path/cplex/lib/x86-64_sles10_4.1/static_pic and -lcplex -lpthread -lm are necessary? Thanks
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Originally posted by: kokuyo

Hi, vhlvqz,

Your question is just related to the compiling basics. I think I may be able to answer you.

-L/path/cplex/lib/x86-64_sles10_4.1/static_pic tells GCC to add this directory to be searched for library programs.

-lcplex -lpthread -lm tells GCC to link with cplex library, pthread library, and math library respectively.

Thank you very much.
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