C++ gmp and homebrew

Question

저는 Mac에 있는데 gcc과 gmp부터 homebrew까지 설치했습니다. 내가 g++ test.cpp -lgmpxx -lgmp를하려고하면 그것은 그래서 g++ test.cpp -lgmpxx -lgmp -I/usr/local/include/ 시도했습니다

test.cpp:9:19: fatal error: gmpxx.h: No such file or directory 
#include <gmpxx.h> 
       ^
compilation terminated. 

을 불평, 모든

#include <iostream> 
#include <gmpxx.h> 
using namespace std; 
int 
main (void) 
{ 
mpz_class a, b, c; 

a = 1234; 
b = "-5678"; 
c = a+b; 
cout << "sum is " << c << "\n"; 
cout << "absolute value is " << abs(c) << "\n"; 

return 0; 
} 

첫째 :

내가 here에서 간단한 예를 시도했습니다 내 설치를 테스트하려면

ld: library not found for -lgmpxx 
collect2: error: ld returned 1 exit status 

그렇다면을 시도했습니다.

Undefined symbols for architecture x86_64: 
    "operator<<(std::basic_ostream<char, std::char_traits<char> >&, __mpz_struct const*)", referenced from: 
     std::basic_ostream<char, std::char_traits<char> >& operator<< <__mpz_struct [1], __mpz_struct [1]>(std::basic_ostream<char, std::char_traits<char> >&, __gmp_expr<__mpz_struct [1], __mpz_struct [1]> const&) in ccPugkZ3.o 
     std::basic_ostream<char, std::char_traits<char> >& operator<< <__mpz_struct [1], __gmp_unary_expr<__gmp_expr<__mpz_struct [1], __mpz_struct [1]>, __gmp_abs_function> >(std::basic_ostream<char, std::char_traits<char> >&, __gmp_expr<__mpz_struct [1], __gmp_unary_expr<__gmp_expr<__mpz_struct [1], __mpz_struct [1]>, __gmp_abs_function> > const&) in ccPugkZ3.o 
ld: symbol(s) not found for architecture x86_64 
collect2: error: ld returned 1 exit status 

재미있는 것은 내가 cout과 함께 줄을 주석하고 시도하는 경우 g++ test.cpp -lgmpxx -lgmp -I/usr/local/include/ -L/usr/local/lib/ && ./a.out는 불만이 없다는 것입니다. 특히 c = a+b; 줄은 주석 처리 할 필요가 없었으므로 어떤 일이 벌어지고있는 것처럼 느껴집니다.

무엇이 누락 되었습니까? 샘플 코드를 컴파일하려면 어떻게해야합니까?

편집 :

내가 제대로 오류 메시지를 이해하고있는 경우 @Will의 제안에 따라, 나는 g++ test.cpp -lgmpxx -lgmp -I/usr/local/include/ -L/usr/local/lib/ -m32

ld: warning: ld: warning: ignoring file /usr/local/lib//libgmpxx.dylib, file was built for x86_64 which is not the architecture being linked (i386): /usr/local/lib//libgmpxx.dylibignoring file /usr/local/lib//libgmp.dylib, file was built for x86_64 which is not the architecture being linked (i386): /usr/local/lib//libgmp.dylib 

Undefined symbols for architecture i386: 
    "operator<<(std::basic_ostream<char, std::char_traits<char> >&, __mpz_struct const*)", referenced from: 
     std::basic_ostream<char, std::char_traits<char> >& operator<< <__mpz_struct [1], __mpz_struct [1]>(std::basic_ostream<char, std::char_traits<char> >&, __gmp_expr<__mpz_struct [1], __mpz_struct [1]> const&) in ccrPv2wC.o 
     std::basic_ostream<char, std::char_traits<char> >& operator<< <__mpz_struct [1], __gmp_unary_expr<__gmp_expr<__mpz_struct [1], __mpz_struct [1]>, __gmp_abs_function> >(std::basic_ostream<char, std::char_traits<char> >&, __gmp_expr<__mpz_struct [1], __gmp_unary_expr<__gmp_expr<__mpz_struct [1], __mpz_struct [1]>, __gmp_abs_function> > const&) in ccrPv2wC.o 
    "___gmpz_abs", referenced from: 
     __gmp_abs_function::eval(__mpz_struct*, __mpz_struct const*) in ccrPv2wC.o 
    "___gmpz_add", referenced from: 
     __gmp_binary_plus::eval(__mpz_struct*, __mpz_struct const*, __mpz_struct const*) in ccrPv2wC.o 
    "___gmpz_clear", referenced from: 
     __gmp_expr<__mpz_struct [1], __mpz_struct [1]>::~__gmp_expr() in ccrPv2wC.o 
    "___gmpz_init", referenced from: 
     __gmp_expr<__mpz_struct [1], __mpz_struct [1]>::__gmp_expr() in ccrPv2wC.o 
     __gmp_expr<__mpz_struct [1], __mpz_struct [1]>::__gmp_expr<__gmp_unary_expr<__gmp_expr<__mpz_struct [1], __mpz_struct [1]>, __gmp_abs_function> >(__gmp_expr<__mpz_struct [1], __gmp_unary_expr<__gmp_expr<__mpz_struct [1], __mpz_struct [1]>, __gmp_abs_function> > const&) in ccrPv2wC.o 
    "___gmpz_set_si", referenced from: 
     __gmp_expr<__mpz_struct [1], __mpz_struct [1]>::assign_si(long) in ccrPv2wC.o 
    "___gmpz_set_str", referenced from: 
     __gmp_expr<__mpz_struct [1], __mpz_struct [1]>::operator=(char const*) in ccrPv2wC.o 
ld: symbol(s) not found for architecture i386 
collect2: error: ld returned 1 exit status 

시도했습니다

로,이 라이브러리는 실제로 64을 위해 만들어진 것 같다 심지어 mpz_class a, b, c 선언도 -m32으로 컴파일되지 않습니다.

Answer 1

이 대답에서 xcode-select --install을 실행 해보십시오.

On mac, g++ (clang) fails to search /usr/local/include and /usr/local/lib by default