bug#17072: dfa change apparently needed on Irix

[Aharon Robbins]

FYI

Arnold
-------------------
> Date: Tue, 18 Mar 2014 13:44:57 -0600 (MDT)
> From: "Nelson H. F. Beebe" <address@hidden>
> To: "Arnold Robbins" <address@hidden>
> Cc: address@hidden
> Subject: gawk-4.1.0f: a patch for a failed build
>
> On SGI IRIX MIPS, gawk-4.1.0a had built and installed without problems
> on 13-Dec-2013.  
>
> For gawk-4.1.0f, however, I had to make one source code patch:
>
> % diff -c dfa.c.org dfa.c
> *** dfa.c.org   Mon Mar 10 14:39:05 2014
> --- dfa.c       Mon Mar 17 18:04:46 2014
> ***************
> *** 43,49 ****
>   #include "missing_d/gawkbool.h"
>   #endif /* HAVE_STDBOOL_H */
>   
> - #include "dfa.h"
>   
>   /* Gawk doesn't use Gnulib, so don't assume static_assert is present.  */
>   #ifndef static_assert
> --- 43,48 ----
> ***************
> *** 89,94 ****
> --- 88,95 ----
>   
>   #include "xalloc.h"
>   
> + #include "dfa.h"
> + 
>   #ifdef GAWK
>   static int
>   is_blank (int c)
>
> The reason for the patch is this error:
>
>       dfa.c:956: error: conflicting types for 'case_folded_counterparts'
>       dfa.h:111: error: previous declaration of 'case_folded_counterparts' 
> was here
>       dfa.c:956: error: conflicting types for 'case_folded_counterparts'
>
> What happens is that the prototype for that function has wchar_t
> arguments, but between the time that prototype is seen, and the first
> reference to the function is seen, wchar_t has been changed to char.
> Moving the inclusion of "dfa.h" later in "dfa.c" solved the problem.
>
> I configured and built like this:
>
> env CC='gcc -std=c99' CFLAGS=-D_SGI_SOURCE LDFLAGS='-L/usr/local/lib 
> -Wl,-rpath,/usr/local/lib' ./configure && $B/make all check