Undefined symbols for architecture x86_64 (object file does not exist)

Asked Apr 06 '22 at 17:52

Active Apr 06 '22 at 17:52

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I am trying to build someone else's QT project that they built and created on Linux, I am trying to build it on a Mac.

However, I am getting the error message "Undefined symbols for architecture x86_64".

error message:

vieworder.cpp.o:-1: error: Undefined symbols for architecture x86_64:
  "pqxx::row::row(pqxx::result const&, int)", referenced from:
      pqxx::const_result_iterator::const_result_iterator(pqxx::result const*, int) in vieworder.cpp.o
  "pqxx::internal::check_pqxx_version_7_6()", referenced from:
      pqxx::check_version() in main.cpp.o
  "pqxx::field::name() const", referenced from:
      ViewOrder::on_statusBtn_clicked() in vieworder.cpp.o
  "pqxx::field::c_str() const", referenced from:
      pqxx::field::view() const in homewindow.cpp.o
      ViewOrder::on_historyBtn_clicked() in vieworder.cpp.o
      ViewOrder::on_statusBtn_clicked() in vieworder.cpp.o

Thanks!

asked Apr 06 '22 at 17:52

Ben

we'd need a [mre] but presumably you need to link to libpqxx – Alan Birtles Apr 06 '22 at 17:54
do you know how to do that with CMake/qt – Ben Apr 06 '22 at 17:58
https://cmake.org/cmake/help/latest/command/target_link_libraries.html – Alan Birtles Apr 06 '22 at 17:59

Undefined symbols for architecture x86_64 (object file does not exist)

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