CODE:

#include <libconfig.h++>

int main(int argc, char **argv)
{
    libconfig::Config c;
    c.readFile("conf.conf");

    std::string s = c.lookup("lol.lol");
    s = c.lookup("lol.lol");

}

END CODE

ERRORS:

[kcbanner@kc testcases]$ gcc libconfig.cpp 
libconfig.cpp: In function ‘int main(int, char**)’:
libconfig.cpp:9: error: ambiguous overload for ‘operator=’ in ‘s = c. libconfig::Config::lookup(((const char*)"lol.lol"))’
/usr/lib/gcc/i686-pc-linux-gnu/4.2.0/../../../../include/c++/4.2.0/bits/basic_string.h:490: note: candidates are: std::basic_string<_CharT, _Traits, _Alloc>& std::basic_string<_CharT, _Traits, _Alloc>::operator=(const std::basic_string<_CharT, _Traits, _Alloc>&) [with _CharT = char, _Traits = std::char_traits<char>, _Alloc = std::allocator<char>]
/usr/lib/gcc/i686-pc-linux-gnu/4.2.0/../../../../include/c++/4.2.0/bits/basic_string.h:498: note:                 std::basic_string<_CharT, _Traits, _Alloc>& std::basic_string<_CharT, _Traits, _Alloc>::operator=(const _CharT*) [with _CharT = char, _Traits = std::char_traits<char>, _Alloc = std::allocator<char>]
/usr/lib/gcc/i686-pc-linux-gnu/4.2.0/../../../../include/c++/4.2.0/bits/basic_string.h:509: note:                 std::basic_string<_CharT, _Traits, _Alloc>& std::basic_string<_CharT, _Traits, _Alloc>::operator=(_CharT) [with _CharT = char, _Traits = std::char_traits<char>, _Alloc = std::allocator<char>]

END ERRORS