[Bug-zile] 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 preprocessor magic in 
lib/wchar.h 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 WEOF can be hacked in easily, but I am not sure how to tweak the 
aforementioned preprocessor magic to make sure we have the mbtowc() 
prototype. 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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