[SCIP] linker error when building soplex

[Franziska Schloesser]

Dear Ziye,

To only build scip you can run make in the scip folder that is generated 
by cmake. For using cplex as LP solver you seem to have used the wrong 
flags, you need the CPLEX_DIR.

That would make your commands look something like this:

mkdir build
cd build
cmake .. -DLPS=cpx -DCPLEX_DIR=</path/to/cplex/install>
cd scip
make

I hope this helps,

Best,
Franziska

On 6/5/20 11:33 AM, Ziye Tang wrote:
> Dear SCIP team,
>
> I am compiling scipoptsuite on a rhel8 server via cmake. I am using 
> cplex as my LP solver and have specified LPS, INCLUDE_DIRS and LIB 
> flags. When cmake finishes, I tried to run make. Here's the error I got:
>
> [  3%] Linking CXX executable ../../bin/soplex
> /usr/bin/ld: CMakeFiles/soplex.dir/soplexmain.cpp.o: undefined 
> reference to symbol '_ZNSo9_M_insertIdEERSoT_@@GLIBCXX_3.4.9'
> //usr/lib64/libstdc++.so.6: error adding symbols: DSO missing from 
> command line
> collect2: error: ld returned 1 exit status
> make[2]: *** [soplex/src/CMakeFiles/soplex.dir/build.make:86: 
> bin/soplex] Error 1
> make[1]: *** [CMakeFiles/Makefile2:182: 
> soplex/src/CMakeFiles/soplex.dir/all] Error 2
> make: *** [Makefile:163: all] Error 2
>
> I don't understand this linker error. It would be great if someone 
> could point me in the right direction. Also, if I am only using scip 
> (with cplex as LP solver), is there a make target I could build? A 
> while ago I tried make scip but I've got some other errors when using 
> scip.
>
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