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c++linuxqtubuntusymlink

Using a relative path in executable with symbolic link

I'm trying to figure out how to use my application with a link in ubuntu. I've compiled the code and it contains relative paths to certain files. When I create a link to the executable in a different directory, I can't use these paths. Is there a way (in my code or in the creation of the link) to make it work with the relative paths?

Thanks

Solution

  • Is it realpath you're after? Something like this (source for test in below example):

    #include <iostream>
#include <cstdlib>

int main(int argc, char *argv[])
{
        char *path = realpath(argv[0], NULL);
        std::cout << path << '\n';
        free(path);
        return 0;
}

    Example execution:

    $ ln -s tmp/test
$ ./test
/home/mlil/tmp/test
$