./build.sh tools: error in 'file'

Building on 1.5.3 (last proper release?) from a reasonably recent
-current, I encountered a problem in
	usr/src/dist/file/src/file.c
in file_mbswidth().

It assumes that HAVE_WCHAR_H means we have mbstate_t and mbrtowc().
/usr/include/wchar.h does not have these, however later
versions do have it (as usr/src/include/wchar.h does too).

Is this a problem with './build.sh tools' incorrectly using the
native headers, or should 'file' be more careful?

Or, maybe I should have done something after installing -current
in /usr/src and before starting the build?

--
Eyal Lebedinsky ([email protected]) <http://samba.org/eyal/>