[英]View default include path of C headers in Mac OS X by `gcc -v`?
I tried to find the default include path of the C compiler in Mac OS X (Mavericks) by using gcc -v
: 我尝试使用gcc -v
在Mac OS X(Mavericks)中找到C编译器的默认包含路径:
$ gcc -v
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/c++/4.2.1
Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
Target: x86_64-apple-darwin13.0.0
Thread model: posix
It seems to tell me the path is /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/c++/4.2.1
, but I'm afraid it is not the true path. 它似乎告诉我路径是/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/c++/4.2.1
,但我害怕这不是真正的道路。 I think the true path for including standard C library is /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include
because <sys/syscall.h>
locates in the later path, which is /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/sys/syscall.h
我认为包含标准C库的真正途径是/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include
因为<sys/syscall.h>
位于在后面的路径中,这是/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/sys/syscall.h
Does anyone have ideas about how to view all the default include path of C library in Mac OS X? 有没有人有关于如何在Mac OS X中查看C库的所有默认包含路径的想法?
You need to ask the preprocessor , not gcc , for telling the default include path. 您需要询问预处理器 ,而不是gcc ,以告知默认的包含路径。
You can say: 你可以说:
`gcc -print-prog-name=cc1` -v
In order to list default include path for both C and C++: 为了列出C和C ++的默认包含路径:
`gcc -print-prog-name=cc1plus` -v
(The path that you've listed above is the one that was used to configure GCC while building.) (您在上面列出的路径是在构建时用于配置 GCC的路径 。)
Another way to list the default include path would be: 列出默认包含路径的另一种方法是:
gcc -x c -v -E /dev/null
gcc -x c++ -v -E /dev/null # (for C/C++)
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