[SCIP] Compling SCIP with MinGW

[Franziska Schloesser]

Dear Tobias,

I have not experienced such a problem yet, do you by any chance get more 
information about the problem if you compile in debug mode?

Let's continue the discussion in a private mail correspondence until we 
find out what is happening there.

Best,
Franziska

On 12/14/21 11:09 AM, Stengel, Tobias wrote:
>
> Hello,
>
> I'm trying to (cross) compile SCIP/Soplex 8.0.0-beta with MinGW. It 
> builds fine but the resulting scip.exe hangs after reading the lp file:
>
>  $/scip.exe -f some.lp/
>
> /SCIP version 8.0.0 [precision: 8 byte] [memory: block] [mode: 
> optimized] [LP solver: SoPlex 6.0.0] [GitHash: ba0175573a]/
>
> /Copyright (C) 2002-2021 Konrad-Zuse-Zentrum fuer Informationstechnik 
> Berlin (ZIB)/
>
> /External libraries:/
>
> /SoPlex 6.0.0         Linear Programming Solver developed at Zuse 
> Institute Berlin (soplex.zib.de) [GitHash: 040e3435]/
>
> /user parameter file <scip.set> not found - using default parameters/
>
> /read problem <some_path/some.lp>/
>
> /============/
>
> Same happens with the queens example as well as SCIP 7.0.3. Based on 
> limited printf debugging the hang seems to be somewhere in the plugin 
> initialization but it might be that memory is corrupted earlier.
>
> Has anyone experience with SCIP and mingw?
>
> I know that SCIP can be built with Visual C++, but that has other 
> disadvantages - starting with the lack of OpenMP > 2.0 (-> no parallel 
> solving of bender subproblems).
>
> Setup:
>
>   * debian bullseye
>   * mingw from the official package sources (g++-mingw-w64-x86-64)
>   * cmake .. -DCMAKE_TOOLCHAIN_FILE=some/path/mingw_toolchain.cmake
>     -DPAPILO=off -DZIMPL=off -DREADLINE=off -DZLIB=off -DIPOPT=off
>     -DQUADMATH=off -DGMP=off -DEXPRINT=none -DAMPL=off -DGCG=off
>   * make scip
>   * mingw_toolchain.cmake:
>
> /set(CMAKE_SYSTEM_NAME Windows)/
>
> /set(CMAKE_C_COMPILER x86_64-w64-mingw32-gcc-posix)/
>
> /set(CMAKE_CXX_COMPILER x86_64-w64-mingw32-g++-posix)/
>
> /set(CMAKE_FIND_ROOT_PATH /usr/x86_64-w64-mingw32)/
>
> /set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)/
>
> /set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)/
>
> /set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)/
>
> /set(AUTOTOOLS_CROSS_COMPILE_FLAGS --host=x86_64-w64-mingw32)/
>
>   * the resulting scip.exe is dynamically linked against
>     libgcc_s_seh-1.dll and libstdc++-6.dll
>
>       o these can be located by running /x86_64-w64-mingw32-g++-posix
>         -print-file-name=some.dll/
>       o both need to be copied into the folder containing scip.exe
>
>   * scip.exe is tested under Windows 10 (64bit)
>
> This setup works fine with other nontrivial C++ code.
>
> Thanks,
>
> Tobias
>
>
>
> Siemens Digital Logistics GmbH
> SL SDL TEC R&D SCS
> Stumpfstr. 1
> 76131 Karlsruhe, Germany
> mailto:tobias.stengel at siemens-logistics.com 
> <mailto:tobias.stengel at siemens-logistics.com>
> www.siemens-digital-logistics.com 
> <http://www.siemens-digital-logistics.com>
>
> Management: Christopher Christian, Christian Schmidt
> Registered office: Nachtweideweg 1-7, 67227 Frankenthal, Germany
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>
>
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