Re: Building m4 on BSDI 4.0.1

>You didn't say which instance of ss_sp.

All instances I believe.

>However, I think this patch does
>the trick.  Let me know if you need a private snapshot of 1.4.8a with the
>patch pre-applied (and configure regenerated), to test it out on your machine.

Well, if you are willing, it would help me out. :)



>> source='mbchar.c' object='mbchar.o' libtool=no \
>>         DEPDIR=.deps depmode=gcc /bin/bash ../depcomp \
>>         gcc  -I.     -g -O2 -c mbchar.c
>> In file included from mbchar.h:157,
>>                  from mbchar.c:22:
>> /usr/include/wchar.h:16: syntax error before `*'
>
>I'm still not sure why your system wchar.h breaks the compile.  What does
>/usr/include/wchar.h look like around line 16?  ('head -n20
>/usr/include/wchar.h' might be useful).  Once we figure out what
>prerequisite header is missing from gnulib's mbchar.[ch], we can hopefully
>get that fixed.

Here's the output you requested:
----------------------------------------------
/*      BSDI wchar.h,v 2.1 1997/10/30 22:40:34 donn Exp */

/*
 * Wide character support.
 */

typedef int wint_t;
typedef int wctype_t;

#define WEOF    (-1)
#define EILSEQ  101

wint_t fgetwc(FILE *stream);
wint_t getwc(FILE *stream);
wint_t getwchar();
wchar_t * fgetws(wchar_t *ws, int n, FILE *stream);
wint_t fputwc(wint_t wc, FILE *stream);
wint_t putwc(wint_t wc, FILE *stream);
wint_t putwchar(wint_t wc);
int fputws(const wchar_t *ws, FILE *stream);



>2006-12-20  Eric Blake  <[email protected]>
>
>        * configure.ac (AC_CHECK_MEMBERS): Check for stack_t.ss_sp, and
>        assume the fallback of ss_base for BSDI 4.0.1.
>        * src/stackovf.c (setup_stackovf_trap) [HAVE_SIGALTSTACK &&
>        ! HAVE_STACK_T_SS_SP]: Use this check.
>        Reported by Chris McGuire.
>        * THANKS: Update.
>
>- --
>Life is short - so eat dessert first!
>
>Eric Blake             [email protected]
>
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>
>Index: configure.ac
>===================================================================
>RCS file: /sources/m4/m4/configure.ac,v
>retrieving revision 1.36.2.32
>diff -u -p -r1.36.2.32 configure.ac
>--- configure.ac        9 Dec 2006 17:06:30 -0000       1.36.2.32
>+++ configure.ac        21 Dec 2006 03:25:18 -0000
>@@ -43,6 +43,12 @@ AC_CHECK_TYPES([siginfo_t], [], [],
> AC_CHECK_MEMBERS([struct sigaction.sa_sigaction], [], [],
> [[#include <signal.h>
> ]])
>+AC_CHECK_MEMBERS([stack_t.ss_sp], [], [],
>+[[#include <signal.h>
>+#if HAVE_SIGINFO_H
>+# include <siginfo.h>
>+#endif
>+]])
> 
> AC_TYPE_SIGNAL
> AC_TYPE_SIZE_T
>Index: src/stackovf.c
>===================================================================
>RCS file: /sources/m4/m4/src/stackovf.c,v
>retrieving revision 1.1.1.1.2.6
>diff -u -p -r1.1.1.1.2.6 stackovf.c
>--- src/stackovf.c      3 Aug 2006 12:51:05 -0000       1.1.1.1.2.6
>+++ src/stackovf.c      21 Dec 2006 03:25:18 -0000
>@@ -341,6 +341,11 @@ Error - Do not know how to set up stack-
> 
>   {
>     stack_t ss;
>+# ifndef HAVE_STACK_T_SS_SP
>+    /* This workaround is for BSDI 4.0.1:
>+       http://lists.gnu.org/archive/html/bug-m4/2006-12/msg00004.html  */
>+#  define ss_sp ss_base
>+# endif
> 
>     ss.ss_size = SIGSTKSZ;
>     ss.ss_sp = xmalloc ((unsigned) ss.ss_size);