Trying to compile v0.16.1 on Mac OS X 10.6.8, I see:

Making all in .
  CC       compat.lo
In file included from compat.c:37:
./compat.h:252:16: error: expected '}'
typedef enum { false, true } bool;
               ^
/usr/bin/../lib/clang/3.0/include/stdbool.h:33:15: note: instantiated from:
#define false 0
              ^
./compat.h:252:14: note: to match this '{'
typedef enum { false, true } bool;
             ^
./compat.h:252:30: error: cannot combine with previous 'enum' declaration specifier
typedef enum { false, true } bool;
                             ^
/usr/bin/../lib/clang/3.0/include/stdbool.h:31:14: note: instantiated from:
#define bool _Bool
             ^
In file included from compat.c:37:
./compat.h:252:1: warning: typedef requires a name [-Wmissing-declarations]
typedef enum { false, true } bool;
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning and 2 errors generated.


So it appears that HAVE_STDBOOL_H is not being defined appropriately; I get identical errors using gcc instead of clang. (clang has an internal stdbool.h but there is also a stdbool.h in /usr/include).