xcode - XCode 4.3 中 stdlib.h 的位置是什么？

Question

请告诉我，XCode 4.3 中 stdlib.h 的位置是什么？

Answer 1

4.3 之前的/DeveloperXcode 版本中的内容现在包含在Xcode.app捆绑包中。有几个，每个支持的 SDK 和平台一个：

$ find /Applications/Xcode.app -name stdlib.h
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.0.sdk/usr/include/c++/4.2.1/tr1/stdlib.h
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.0.sdk/usr/include/stdlib.h
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk/usr/include/c++/4.2.1/tr1/stdlib.h
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk/usr/include/stdlib.h
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.6.sdk/usr/include/c++/4.2.1/tr1/stdlib.h
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.6.sdk/usr/include/stdlib.h
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk/usr/include/c++/4.2.1/tr1/stdlib.h
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk/usr/include/stdlib.h

Answer 2

如果您安装命令行工具（Xcode > Preferences > Downloads），则该文件位于/usr/include/stdlib.h.

Answer 3

我认为你应该使用unistd.h而不是stdlib.h. 我在导入时尝试使用 sleep() 时遇到问题stdlib.h，我必须导入unistd.h.