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macos - macOS Catalina 上缺少头文件

转载 作者：行者123 更新时间：2023-12-05 07:18:21 30 4
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我在 macOS Catalina 上遇到头文件问题。我收到如下命令行工具错误:

/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/sys/resource.h:443:29: error: parameter name omitted
 int     getiopolicy_np(int, int) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0);
                             ^~~

和 gcc 错误

/usr/local/Cellar/gcc@8/8.3.0/lib/gcc/8/gcc/x86_64-apple-darwin18/8.3.0/include-fixed/math.h:535:15: error: storage class specified for parameter 'nextafte'
 extern double nextafter(double, double);

我深入研究了 macOS Catalina 上的头文件和 gcc 使用 this回答作为引用点。答案是

Regarding header locations, I have Apples headers in /Library/Developer/CommandLineTools/:

$ sudo find /Library -name stdio.h 
/Library/Developer/CommandLineTools/usr/include/c++/v1/stdio.h
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/sys/stdio.h
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/stdio.h
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.

当我运行相同的命令时， header 位置略有不同:

/Library/Developer/CommandLineTools/usr/include/c++/v1/stdio.h
/Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/usr/include/sys/stdio.h
/Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/usr/include/stdio.h
/Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/sys/stdio.h
/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/stdio.h
/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/stdio.h
/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/sys/stdio.h

可以看出，SDK 现在分为 MACOSX10.14 和 10.15 unlinke。另一个区别是头文件。根据引用答案，

if you install gcc via brew, it will add headers in /usr/local/:

$ sudo find /usr -name stdio.h 
/usr/local/Cellar/gcc/8.2.0/include/c++/8.2.0/tr1/stdio.h
/usr/local/Cellar/gcc/8.2.0/lib/gcc/8/gcc/x86_64-apple-darwin17.7.0/8.2.0/include/ssp/stdio.h
/usr/local/Cellar/gcc/8.2.0/lib/gcc/8/gcc/x86_64-apple-darwin17.7.0/8.2.0/include-fixed/stdio.h
/usr/local/Cellar/gcc/8.1.0/include/c++/8.1.0/tr1/stdio.h
/usr/local/Cellar/gcc/8.1.0/lib/gcc/8/gcc/x86_64-apple-darwin17.5.0/8.1.0/include/ssp/stdio.h
/usr/local/Cellar/gcc/8.1.0/lib/gcc/8/gcc/x86_64-apple-darwin17.5.0/8.1.0/include-fixed/stdio.h
/usr/local/Cellar/gcc/7.3.0_1/include/c++/7.3.0/tr1/stdio.h
/usr/local/Cellar/gcc/7.3.0_1/lib/gcc/7/gcc/x86_64-apple-darwin17.3.0/7.3.0/include/ssp/stdio.h
/usr/local/Cellar/gcc@7/7.3.0/include/c++/7.3.0/tr1/stdio.h
/usr/local/Cellar/gcc@7/7.3.0/lib/gcc/7/gcc/x86_64-apple-darwin17.5.0/7.3.0/include/ssp/stdio.h
/usr/local/Cellar/gcc@7/7.3.0/lib/gcc/7/gcc/x86_64-apple-darwin17.5.0/7.3.0/include-fixed/stdio.h
/usr/local/include/c++/8.2.0/tr1/stdio.h
/usr/local/lib/gcc/8/gcc/x86_64-apple-darwin17.7.0/8.2.0/include/ssp/stdio.h
/usr/local/lib/gcc/8/gcc/x86_64-apple-darwin17.7.0/8.2.0/include-fixed/stdio.h

但是，当我运行上面的命令时，我得到:

/usr/local/Cellar/gcc@8/8.3.0/include/c++/8.3.0/tr1/stdio.h
/usr/local/Cellar/gcc@8/8.3.0/lib/gcc/8/gcc/x86_64-apple-darwin18/8.3.0/include/ssp/stdio.h
/usr/local/Cellar/gcc@8/8.3.0/lib/gcc/8/gcc/x86_64-apple-darwin18/8.3.0/include-fixed/stdio.h

其他头文件在哪里？这些命令在 macOS Catalina 中应该返回什么？

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