dstep problem: "fatal error: 'limits.h' file not found"

[Joseph Rushton Wakeling via Digitalmars-d-learn]

I've just built and installed dstep (on Ubuntu 15.10, using 
libclang-3.7) but whenever I try to run it on a header file, I 
run into the error message:

File(8AC8E0, "")/usr/include/limits.h:123:16: fatal error: 
'limits.h' file not found

I suspect this is a libclang problem, but does anyone have any 
advice how to address it?

It appears to be occurring in these lines in 
/usr/include/limits.h:

     #if defined __GNUC__ && !defined _GCC_LIMITS_H_
     /* `_GCC_LIMITS_H_' is what GCC's file defines.  */
     # include_next <limits.h>
     #endif