AW: [Christoph.Bauer@lms-gmbh.de: HP-UX: link error]

["Bauer, Christoph" <Christoph.Bauer@lms-gmbh.de>]

>     cc fails with this error in lib-src:
> 
>     cc -DHAVE_CONFIG_H    -I. -I../src -
> I/T/tools/unix/build/emacs/emacs/lib-src
>     -I/T/tools/unix/build/emacs/emacs/lib-src/../src   -g
>     /T/tools/unix/build/emacs/emacs/lib-src/fakemail.c -l:libdld.sl      -
> o
>     fakemail
>     cpp: "/T/tools/unix/build/emacs/emacs/lib-src/../src/s/hpux9.h", line
> 63:
>     warning 2001: Redefinition of macro HAVE_PSTAT_GETDYNAMIC.
>     cc: "/usr/include/sys/_mbstate_t.h", line 11: error 1000: Unexpected
> symbol:
>     "int".
>     cc: "/usr/include/stdlib.h", line 117: warning 573: Parameter list is
>     inconsistent for "getenv".
> 
> Would you like to debug it and send a patch we can try?

I don't have a complete fix, but a first explanation for the message.

src/config.h contains

/* Define to 1 if <wchar.h> declares mbstate_t. */
/* #undef HAVE_MBSTATE_T */

#define HAVE_SYS__MBSTATE_T_H 1

#define mbstate_t int

/* End of config.h */

But <sys/_mbstate_t.h> defines mbstate_t as a struct. This leads to
the syntax error above. src/config.h from the gcc-build doesn't 
define mbstate_t. configure.in:AC_TYPE_MSTATE_T
generates a test program, which includes only <wchar.h>.

Here is a patch for configure.in with a workaround:

diff -r1.406 configure.in
2695a2696,2700
> echo "$ac_cv_header_sys__mbstate_t_h"
> if test "$ac_cv_header_sys__mbstate_t_h" = "yes"; then
>    ac_cv_type_mbstate_t="yes"
> fi
>

There is a second problem, which is located in src/strftime.c.

#ifdef _LIBC
...
# define MULTIBYTE_IS_FORMAT_SAFE 1
...
#endif 
...

#define DO_MULTIBYTE (HAVE_MBLEN && ! MULTIBYTE_IS_FORMAT_SAFE)

#if DO_MULTIBYTE
# if HAVE_MBRLEN
#  include <wchar.h>
#   ifdef HAVE_SYS__MBSTATE_H	/* previously tested __hpux */
#     include <sys/_mbstate_t.h>
#   endif
#  if !defined (mbsinit) && !defined (HAVE_MBSINIT)
#   define mbsinit(ps) 1
#  endif /* !defined (mbsinit) && !defined (HAVE_MBSINIT) */

So <sys/_mbstate_t.h> is not included (_LIBC in not defined).
When I define MULTIBYTE_IS_FORMAT_SAFE in config.h, the build
succeeds.