Originally posted by: GopalEaswaran

Hi all, 

I tried compiling the makefile for the examples using C++. The c version of the examples compile fine and they execute without any errors. However, the C++ version provides the following error. I included the code -stdlib=libstdc++ to the flags, as mentioned in a prior thread.

CCOPT = -stdlib=libstdc++ -m64 -O -fPIC -fno-strict-aliasing -fexceptions -DNDEBUG -DIL_STD

CCLNFLAGS = -stdlib=libstdc++ -lconcert -lilocplex -lcplex -lm -lpthread

I am attaching the makefile and the screen output.

I thank you for your help in advance. 

Thanks,

Gopal

Are you sure you edited and are using the right Makefile? In your output.txt I don't see any mention of -stdlib=libstdc++. If you are using the correctly updated Makefile then this option should appear on the compiler as well as the linker command line.

Originally posted by: GopalakrishnanEaswaran

Hi Daniel, 

Thank you for the reply. Yes, it is the correct make file. After much fight, I installed the CPLEX 12.5 and it compiles and works fine. I am sure the error has to do with linking the correct version of the stdlib with the compiler For now, I am going with 12.5. Thank you again for your reply. 

Gopal

I don't see how you could be using the correct makefile if the log output from your compilation did not contain '-stdlib=libstdc++'. Since this was missing from the compiler and linker commands it means you were not doing what you intended to do.