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Undefined Reference Error

Ongoing
BURAK ÖZYÜREK
Gurobi-versary
First Comment
First Question

Hello. I am trying to compile the sample project mip1c++ with the mingw-w64 compiler. The console command I used to compile is:

g++ mip1.cpp -o mip1 -I C:\gurobi1100\win64\include -L C:\gurobi1100\win64\lib -lgurobi_c++ -l:libgurobi_c++.a

I compiled the libgurobic++.a library file as indicated here: https://support.gurobi.com/hc/en-us/articles/360039093112-How-do-I-resolve-undefined-reference-errors-while-linking-Gurobi-in-C-  and copied it to gurobi1100/linux64/lib directory, but it still gives "undefined reference" error. By the way, I'm using Win11, but do I need to compile Gurobi for Win64? I upload a screenshot of my output.

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2 comments

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  • David Torres Sanchez
    Gurobi Staff Gurobi Staff

    Hi,

    You may have to edit the \(\texttt{Makefile}\) in the installation \(\texttt{src/build/}\) directory to compile using the same compiler that you are using here.

    The instructions in the Makefile for Windows include compiling using Visual Studio, which you do not need.

    Cheers, 
    David

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  • BURAK ÖZYÜREK
    Gurobi-versary
    First Comment
    First Question

    Hi.

    I believe that I am using same compiler for both processes. You can see my compiler details below.

     

    PS C:\gurobi1100\linux64\src\build> g++ -v
    Using built-in specs.
    COLLECT_GCC=C:\msys64\mingw64\bin\g++.exe
    COLLECT_LTO_WRAPPER=C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/lto-wrapper.exe
    Target: x86_64-w64-mingw32
    Configured with: ../gcc-13.2.0/configure --prefix=/mingw64 --with-local-prefix=/mingw64/local --build=x86_64-w64-mingw32 --host=x86_64-w64-mingw32 --target=x86_64-w64-mingw32 --with-native-system-header-dir=/mingw64/include --libexecdir=/mingw64/lib --enable-bootstrap --enable-checking=release --with-arch=nocona --with-tune=generic --enable-languages=c,lto,c++,fortran,ada,objc,obj-c++,jit --enable-shared --enable-static --enable-libatomic --enable-threads=posix --enable-graphite --enable-fully-dynamic-string --enable-libstdcxx-filesystem-ts --enable-libstdcxx-time --disable-libstdcxx-pch --enable-lto --enable-libgomp --disable-libssp --disable-multilib --disable-rpath --disable-win32-registry --disable-nls --disable-werror --disable-symvers --with-libiconv --with-system-zlib --with-gmp=/mingw64 --with-mpfr=/mingw64 --with-mpc=/mingw64 --with-isl=/mingw64 --with-pkgversion='Rev2, Built by MSYS2 project' --with-bugurl=https://github.com/msys2/MINGW-packages/issues --with-gnu-as --with-gnu-ld --disable-libstdcxx-debug --with-boot-ldflags=-static-libstdc++ --with-stage1-ldflags=-static-libstdc++
    Thread model: posix
    Supported LTO compression algorithms: zlib zstd
    gcc version 13.2.0 (Rev2, Built by MSYS2 project)
    PS C:\gurobi1100\linux64\src\build>

     

     

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