How do I resolve the undefined reference error in libgurobi_c++.a?

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Haoyi Zhang

May 11, 2023 11:33

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I try to use gurobi with cmake. I have already get the correct PATH in the compile procedure, however I get the undefined reference in a very simple case. the simple case is your eample qp_c++.cpp.

The error log is show as follows:

/home/haoyizhang/gurobi1001/linux64/lib/libgurobi_c++.a(Env.o): In function `GRBEnv::~GRBEnv()':
Env.cpp:(.text+0x24): undefined reference to `GRBfreeenv'
/home/haoyizhang/gurobi1001/linux64/lib/libgurobi_c++.a(Env.o): In function `GRBEnv::message(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
Env.cpp:(.text+0x39): undefined reference to `GRBmsg'
/home/haoyizhang/gurobi1001/linux64/lib/libgurobi_c++.a(Env.o): In function `GRBEnv::getErrorMsg[abi:cxx11]() const':
Env.cpp:(.text+0x4a): undefined reference to `GRBgeterrormsg'
/home/haoyizhang/gurobi1001/linux64/lib/libgurobi_c++.a(Env.o): In function `GRBEnv::start()':
Env.cpp:(.text+0xaf): undefined reference to `GRBstartenv'
/home/haoyizhang/gurobi1001/linux64/lib/libgurobi_c++.a(Env.o): In function `GRBEnv::fixTuneParam(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
Env.cpp:(.text+0x176): undefined reference to `GRBfixtuneparam'
/home/haoyizhang/gurobi1001/linux64/lib/libgurobi_c++.a(Env.o): In function `GRBEnv::get(GRB_IntParam) const':
Env.cpp:(.text+0x24e): undefined reference to `GRBgetintparam'
/home/haoyizhang/gurobi1001/linux64/lib/libgurobi_c++.a(Env.o): In function `GRBEnv::get(GRB_DoubleParam) const':
Env.cpp:(.text+0x330): undefined reference to `GRBgetdblparam'
/home/haoyizhang/gurobi1001/linux64/lib/libgurobi_c++.a(Env.o): In function `GRBEnv::set(GRB_IntParam, int)':
Env.cpp:(.text+0x40f): undefined reference to `GRBsetintparam'
/home/haoyizhang/gurobi1001/linux64/lib/libgurobi_c++.a(Env.o): In function `GRBEnv::set(GRB_DoubleParam, double)':
Env.cpp:(.text+0x4e1): undefined reference to `GRBsetdblparam'
/home/haoyizhang/gurobi1001/linux64/lib/libgurobi_c++.a(Env.o): In function `GRBEnv::set(GRB_StringParam, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':

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• Official comment

  

  Simranjit Kaur

  • Gurobi Staff

  November 13, 2026 01:43

  This post is more than two 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 try Gurobot, our chatbot interface offering instant, expert-level support.
• 

  David Torres Sanchez

  • Gurobi Staff

  May 15, 2023 07:20

  Hi,
  
  Have you tried the steps in our article: How do I resolve "undefined reference" errors while linking Gurobi in C++?

  Cheers, 
  David

  0

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