[cfe-dev] How to analyze a C++ header file with a clang tool?

[Richard]

In article <lmmfo6$at5$1 at ger.gmane.org>,
    Jacob Carlborg <doob at me.com> writes:

> On 04/06/14 02:51, Manasij Mukherjee wrote:
> > Hi
> > I have seen the examples in clang/tools/, and even built a few simple
> > tools myself.
> > But all of them work on source files.
> > For example, I am not sure if I can use clang-check on a header file.
> 
> Is there a difference? Just pass the header file to the tool instead. 

Many tools use a compilation database to specify the set of defined
symbols, include order, etc., all of which are still relevant to
analyzing a header file.

Unfortunately the compilation database is typically generated from a
build system that says how source files are compiled into object
files, so it won't have instructions for how to compile a header file.

However, the compilation database is just a JSON file with a simple
syntax, so you should be able to construct command lines for a header
file just as you would for a source file.  I haven't tried this, so I
don't know how/if it will work.
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