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c++qmake

How to pass "messages" from qmake to C++?

I have a unit test which needs external data which is in a file unit_test_data. I would like unit_test_data to travel together with the source code (also in the version control system). But I do not know how to make the unit test aware of the location of unit_test_data in the file system. The qmake system knows the location, but how can it pass this knowledge to the code?

#include <ifstream>

void test()
{
    std::string path = path_to_file + "/unit_test_data";
      // How can I pass this ^ from qmake? 
    std::ifstream(path.c_str());
    ...
}
Solution

  • You can define a new macro, in the .pro file:

    DEFINES += FILENAME=\\\"/unit_test_data\\\"

    As you see the issue is that is has to be quoted twice.

    And then, in the C++ code, use the macro expansion:

    std::string path = path_to_file + FILENAME;