Zile build breaks in lib/btow.c on NetBSD 1.5

[Hauke Fath]

Hi,

trying to build Zile 2.3.15 on an older NetBSD release (1.5), I have run
into problems compiling lib/btow.c. The project maintainer pointed me in
the direction of gnulib.

The preprocessor magic in lib/wchar.h
<http://git.savannah.gnu.org/gitweb/?p=gnulib.git;a=blob;f=lib/wchar.in.h;h=3f96a8548964e46c46612cdd26d58d5c047ed582;hb=master>
misses #including <stdlib.h> for the definition of mbtowc() alike to the
BSD/OS case,


btowc.c: In function `btowc':
btowc.c:34: warning: implicit declaration of function `mbtowc'


and this NetBSD version's <wchar.h> does not #define WEOF.


btowc.c:37: `WEOF' undeclared (first use in this function)
btowc.c:37: (Each undeclared identifier is reported only once
btowc.c:37: for each function it appears in.)
btowc.c:38: warning: control reaches end of non-void function
*** Error code 1


<http://la.causeuse.org/hauke/pkgsrc/zile/zile2315.out.gz>
<http://la.causeuse.org/hauke/pkgsrc/zile/btowc.i.gz>
<http://la.causeuse.org/hauke/pkgsrc/zile/config.log.gz>


The patch at

<http://la.causeuse.org/hauke/pkgsrc/zile/lib_wchar.in.h.diff>

does two things:

(1) decouple the WEOF definition from wint_t availability
(2) include <stdlib.h> where NetBSD declares mbtowc()

Maybe both can/should be checked for by auto* magic?

Please let me know if you need any additional information.

        hauke


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