[SCIP] Using GuRoBi as LP solver: error in compilation using make LPS=grb ZIMPL=false

[Gregor Hendel]

Hi Nag,

welcome to the SCIP mailing list.  I recommend you switch to CMake to 
compile SCIP, if available, which is much easier, especially on 
non-Linux platforms. Please refer to

https://scip.zib.de/doc-6.0.2/html/CMAKE.php

In your case, the cmake command should be

cmake .. -DGUROBI_DIR=/Library/gurobi810/mac64/ -DLPS=grb

Happy branch-and-pricing,
Gregor



Am 11.12.19 um 06:33 schrieb Naga Venkata Chaitanya Gudapati - 
nagavenkata.gudapati at studio.unibo.it:
> Hello Everyone,
>
>
> I had never used SCIP before and I am hoping to use it for branch and 
> price. I had never used CPLEX before and I am mostly familiar with 
> GuROBi (I currently have my "column generation" Framework in GuRoBi) 
> but I am facing lot of issues in trying to compile SCIP using GuRoBi 
> as an LP solver.
>
> I compile using
>
> make LPS=grb ZIMPL=false
>
> I am facing issues at these following areas:
>
> > Enter soft-link target file or directory for "lib/include/grbinc" 
> (return if not needed):
>
> I am not 100% sure where this directory is. I  am currently using this 
> directory for the include
>
>     /Library/gurobi810/mac64/include
>
> and then for the library
>
> > Enter soft-link target file or directory for 
> "lib/shared/libgurobi.darwin.x86_64.gnu.so" (return if not needed):
>
> and I am using this directory
>
> /Library/gurobi810/mac64/lib
>
>
> I think the paths are wrong as it is failing to compile.
>
> This is the error I am getting:
>
> ld: can't map file, errno=22 file 
> '/Users/cgudapati/scipoptsuite-6.0.2/scip/lib/shared/libgurobi.darwin.x86_64.gnu.so'
>
> clang: error:
> linker command failed with exit code 1 (use -v to see invocation)
>
> build failed with READLINE=true: if readline is not available, try 
> building with READLINE=false
>
> build failed with ZLIB=true: if ZLIB is not available, try building 
> with ZLIB=false
>
> build failed with GMP=true: if GMP is not available, try building with 
> GMP=false (note that this will deactivate Zimpl support)
>
> make[3]: *** [bin/scip-6.0.2.darwin.x86_64.gnu.opt.grb.none] Error 1
>
> make[2]: *** [all] Error 2
>
> make[1]: *** [scipbinary] Error 2
>
> make: *** [scipbinary] Error 2
>
>
>
> I understand the error and SCIP is telling me that it cannot find the 
> .so library and neither can I.  I realize that GuRoBi support is still 
> in Beta but any help is appreciated.
>
>
> Thanks,
>
> Nag
>
>
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> Scip at zib.de
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