How to install clang header files?

Question

I have clang installed on my MacOS (in /usr/bin/clang ) which I think comes installed by default on Mac, however, when I try to include clang header files in a script, it says they are not found

Example.cpp:1:10: fatal error: 'clang/Driver/Options.h' file not found

Question: is it necessary (and possible, if so, how) to install the header files when clang is already installed and built on the MacOS system (or does clang itself need to be reinstalled at the same time as all the desired development tooling packages and their header files are installed)?

#include "clang/Driver/Options.h"
#include "clang/AST/AST.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/ASTConsumer.h"
#include "clang/AST/RecursiveASTVisitor.h"
#include "clang/Frontend/ASTConsumers.h"
#include "clang/Frontend/FrontendActions.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Tooling/CommonOptionsParser.h"
#include "clang/Tooling/Tooling.h"
#include "clang/Rewrite/Core/Rewriter.h"

Answer 1

When you use double quotes for including the libraries it will search the current directory which your c/cpp file or application resides in. Try with < and > or compile with the -I option