问题：
/Library/Developer/CommandLineTools/usr/bin/../include/c++/v1/stdlib.h:20:15: fatal error: 'stdlib.h' file not found
#include_next <stdlib.h>
^~~~~~~~~~
1 error generated.
error: command '/Library/Developer/CommandLineTools/usr/bin/clang' failed with exit code 1
解决方案：
Before you proceed, make sure to install xcode command line tools. xcode-select --install Actually, you can do it! Actually all the C headers are found here in this folder: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/ We just need to create symlink for all the headers file into this folder: /usr/local/include/ It worked for me! the following command line will take care of all the problems: sudo ln -s /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/* /usr/local/include/
标签：祖传,MacOS,Library,command,usr,include,bug,CommandLineTools,Developer From： https://www.cnblogs.com/xirtam/p/17396927.html