Gurobi cannot compile with CUDA

回答済み

Samiran Kawtikwar

2021年09月14日 18:11

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I can use standalone c++ codes with Gurobi on my linux machine.
I am trying to use Gurobi in a project which uses CUDA and has some .cu files

However all the Gurobi code is in .cpp file and I am compiling using the flags I use for my standalone codes.
The command is:

g++ -I/opt/gurobi912/linux64/include/ -I/usr/local/cuda/include -L/opt/gurobi912/linux64/lib -lgurobi_c++ -lgurobi91 -c helper.cpp -o ../o/helper.o

(helper.cpp) is the file with a function that uses Gurobi.

I get an error during compilation with undefined reference to every Gurobi class object.

helper.cpp:(.text+0x1ec): undefined reference to `GRBEnv::GRBEnv(bool)'
helper.cpp:(.text+0x20c): undefined reference to `GRBModel::GRBModel(GRBEnv const&)'
helper.cpp:(.text+0x258): undefined reference to `GRBVar::GRBVar()'
helper.cpp:(.text+0x2b5): undefined reference to `GRBVar::GRBVar()'

and so on..

Please help, the error seems to occur only when I have cuda APIs somewhere in my code.

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• 正式なコメント

  

  Simranjit Kaur

  • Gurobi Staff

  2025年06月23日 02:47 編集済み

  This post is more than three years old. Some information may not be up to date. For current information, please check the Gurobi Documentation or Knowledge Base. If you need more help, please create a new post in the community forum. Or why not try our AI Gurobot?.
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  Matthias Miltenberger

  • Gurobi Staff

  2021年09月15日 09:35

  Hi Samiran,

  Did you follow the suggestions in this guide already:
  How do I resolve "undefined reference" errors while linking Gurobi in C++? – Gurobi Support Portal

  Best regards,
  Matthias

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  Samiran Kawtikwar

  2021年09月15日 13:56

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  Hi, thanks for commenting.
  Yes, I did. But it didn't help, it was probably setup just fine.
  I managed to fix the compilation error though.
  Turns out I had an error in the makefile, I did not link the library in all: target and thought it would take it from the individual compilation commands.

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