Mac下使用CLion编译zxing-cpp出现Undefined symbols for architecture x86_64

报错如下：

Undefined symbols for architecture x86_64:
  "_iconv", referenced from:
      (anonymous namespace)::add(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, char) in libzxing.a(Decoder.cpp.o)
      zxing::qrcode::DecodedBitStreamParser::append(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, char const*, unsigned long, char const*) in libzxing.a(DecodedBitStreamParser.cpp.o)
  "_iconv_close", referenced from:
      (anonymous namespace)::add(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, char) in libzxing.a(Decoder.cpp.o)
      zxing::qrcode::DecodedBitStreamParser::append(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, char const*, unsigned long, char const*) in libzxing.a(DecodedBitStreamParser.cpp.o)
  "_iconv_open", referenced from:
      (anonymous namespace)::add(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, char) in libzxing.a(Decoder.cpp.o)
      zxing::qrcode::DecodedBitStreamParser::append(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, char const*, unsigned long, char const*) in libzxing.a(DecodedBitStreamParser.cpp.o)
ld: symbol(s) not found for architecture x86_64
clang: error: ld returned 1 exit status

首先确定已经安装了iconv库，在/usr/include文件夹下有头文件iconv.h，在/usr/lib文件夹下有libiconv.dylib

处理方法一：

修改toolchain为gcc。因为clang有坑。参见官方教程https://www.jetbrains.com/help/clion/how-to-switch-compilers-in-clion.html

 

处理方法二：

换个os！docker下创建了个debian镜像来作编译任务，虚拟机也行。