如何将C ++项目从32位迁移到64位以支持MAC OS 10.14（Mojave）？

Question

We are trying to make conversion of our c++ code from 32-Bit to 64-Bit. This conversion is to support for new MAC OS 10.14 which is to be released in September 2018 which supports only 64-Bit applications.

As of now, If we run 'file' command on our binary its showing below result.

$ file <my_cpp_binary>
$ my_cpp_binary: Mach-0 executable i386

How can we convert my code to support only for 64-Bit architecture? What changes we have to do in our code? How to make my binary to show executable as only 64bit instead of i386 when we execute file command?

Answer 1

您还需要确保相关库也是64位的，如果您使用的是新的64位库，则可能需要像使用新库的标头一样传递宏，并且新库可能具有特定于64位的代码宏。