Hi;

  What do I need to add or modify to my clang++ compile command?

  I installed gmp via MacPorts:

port installed | grep gmp | grep -v p5 | grep -v R | grep -v py
  gmp @6.3.0_0 (active)

When I try to compile a Rosetta Code task written in C++

(https://rosettacode.org/wiki/Find_largest_left_truncatable_prime_in_a_given_base#C++)

I get these error(s):

clang++ -std=c++20 -lgmp -o
./find_largest_left_truncatable_prime_in_a_given_base
./find_largest_left_truncatable_prime_in_a_given_base.cpp

Undefined symbols for architecture arm64:
  "operator<<(std::__1::basic_ostream<char,
std::__1::char_traits<char>>&, __mpz_struct const*)", referenced from:
      std::__1::basic_ostream<char, std::__1::char_traits<char>>&
operator<<<__mpz_struct [1], __mpz_struct
[1]>(std::__1::basic_ostream<char, std::__1::char_traits<char>>&,
__gmp_expr<__mpz_struct [1], __mpz_struct [1]> const&) in
find_largest_left_truncatable_prime_in_a_given_base-ef7644.o
ld: symbol(s) not found for architecture arm64
clang++: error: linker command failed with exit code 1 (use -v to see
invocation)

Thanks in advance,
Ken Wolcott

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