Can't compile code with CVC4 C++ API

Question

I am just trying to compile this file helloworld.cpp

#include <iostream>
#include <cvc4/cvc4.h>
using namespace CVC4;
int main() {
        ExprManager em;
        Expr helloworld = em.mkVar("Hello World!", em.booleanType());
        SmtEngine smt(&em);
        std::cout << helloworld << " is " << smt.query(helloworld) << std::endl;
        return 0;
}

using g++ helloworld.cpp -lcvc4 -o helloworld -lcvc4 -Wno-deprecated. But it is giving me this error

/tmp/cc9SFpL4.o: In function `main':
helloworld.cpp:(.text+0xac): undefined reference to `CVC4::ExprManager::mkVar(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, CVC4::Type, unsigned int)'
collect2: error: ld returned 1 exit status

Help!

I have installed CVC4 adding repo link in /etc/apt/sources.list and then calling sudo apt-get install cvc4 libcvc4-dev libcvc4parser-dev.

EDIT: I mistyped g++ helloworld.cpp -lcvc4 ... I used g++ helloworld.cpp -o helloworld -lcvc4 -Wno-deprecated. Actually I used all combinations, permutations.

Answer 1

This seems to be a problem with the OP's environment. Both r4C9rAyrd6A1 and I were able to compile the example on our local machines. The specific issue might have been that the OP's compiler wanted the -lcvc4 linker flag after the other flags, e.g. g++ helloworld.cpp -Wno-deprecated -o helloworld -lcvc4 as mentioned in the comments.