c ++ #ifdef Mac OS X 问题
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c++ #ifdef Mac OS X question
提问by Kirsty
I am fairly new to C++. I am currently working on a group project and we want to make our classes compatible with both the lab computers (Windows) and my computer (Mac OS X).
我对 C++ 相当陌生。我目前正在进行一个小组项目，我们希望我们的课程与实验室计算机 (Windows) 和我的计算机 (Mac OS X) 兼容。
Here is what we have been putting at the top of our files:
这是我们一直放在文件顶部的内容：
#ifdef TARGET_OS_X
# include <GLUT/glut.h>
# include <OpenGL/OpenGL.h>
#elif defined _WIN32 || defined _WIN64
# include <GL\glut.h>
#endif
I realize this question has been asked before but my searches have been giving me conflicting answers such as "_MAC", "TARGET_MAC_OS", "MACINTOSH", etc. What is the current and correct declaration to put in the #ifdef statement to make this compatible with Mac? Right now it is not working.
我意识到以前有人问过这个问题，但我的搜索给了我相互矛盾的答案，例如“_MAC”、“TARGET_MAC_OS”、“MACINTOSH”等。在#ifdef 语句中放入的当前和正确的声明是什么来实现这一点与Mac兼容？现在它不起作用。
Thank you!
谢谢！
回答by orlp
According to this answer:
根据这个答案：
#ifdef __APPLE__
#include "TargetConditionals.h"
#ifdef TARGET_OS_IPHONE
// iOS
#elif TARGET_IPHONE_SIMULATOR
// iOS Simulator
#elif TARGET_OS_MAC
// Other kinds of Mac OS
#else
// Unsupported platform
#endif
#endif
So in short:
简而言之：
#ifdef __APPLE__
#include "TargetConditionals.h"
#ifdef TARGET_OS_MAC
#include <GLUT/glut.h>
#include <OpenGL/OpenGL.h>
#endif
#elif defined _WIN32 || defined _WIN64
#include <GL\glut.h>
#endif
回答by koan
It depends on the compiler. #ifdef __APPLE__works for gcc.
这取决于编译器。#ifdef __APPLE__适用于 gcc。
回答by Respiro
Small correction: #ifdef TARGET_OS_MAC will get you always true on both OS X and iOS, as it is defines either 0 or 1 depending on platform, but when APPLEis defined, TARGET_OS_MAC is defined as well, so checking it inside the #ifdef APPLEis worthless. You might want to use #if TARGET_OS_MAC instead. Same for all TARGET_* macros.
小更正：#ifdef TARGET_OS_MAC 将使您在 OS X 和 iOS 上始终为真，因为它根据平台定义了 0 或 1，但是当定义了APPLE 时，也定义了 TARGET_OS_MAC，因此在 #ifdef APPLE 中检查它毫无价值。您可能想改用 #if TARGET_OS_MAC。所有 TARGET_* 宏都相同。
回答by Jon Spencer
According to Microsoft, _WIN32will cover both the 32-bit and 64-bit versions of Windows. And __APPLE__works for Clang (at least in Mavericks). So one correct way to write the ifdefs above is:
据微软称，_WIN32将涵盖 32 位和 64 位版本的 Windows。并__APPLE__为 Clang 工作（至少在小牛队）。因此，编写上述 ifdef 的一种正确方法是：
#ifdef __APPLE__
DoSomething();
#elif _WIN32
DoSomethingElse();
#else
GenerateErrorOrIgnore
