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#serial 11
dnl autoconf tests required for use of mbswidth.c
dnl From Bruno Haible.
AC_DEFUN([gl_MBSWIDTH],
[
AC_CHECK_HEADERS_ONCE(wchar.h wctype.h)
AC_CHECK_FUNCS_ONCE(isascii iswprint mbsinit)
AC_CHECK_FUNCS(iswcntrl wcwidth)
gl_FUNC_MBRTOWC
AC_CACHE_CHECK([whether wcwidth is declared], ac_cv_have_decl_wcwidth,
[AC_TRY_COMPILE([
/* AIX 3.2.5 declares wcwidth in <string.h>. */
#if HAVE_STRING_H
# include <string.h>
#endif
#if HAVE_WCHAR_H
# include <wchar.h>
#endif
], [
#ifndef wcwidth
char *p = (char *) wcwidth;
#endif
], ac_cv_have_decl_wcwidth=yes, ac_cv_have_decl_wcwidth=no)])
if test $ac_cv_have_decl_wcwidth = yes; then
ac_val=1
else
ac_val=0
fi
AC_DEFINE_UNQUOTED(HAVE_DECL_WCWIDTH, $ac_val,
[Define to 1 if you have the declaration of wcwidth(), and to 0 otherwise.])
dnl UnixWare 7.1.1 <wchar.h> has a declaration of a function mbswidth()
dnl that clashes with ours.
AC_CACHE_CHECK([whether mbswidth is declared in <wchar.h>],
ac_cv_have_decl_mbswidth,
[AC_TRY_COMPILE([
#if HAVE_WCHAR_H
# include <wchar.h>
#endif
], [
char *p = (char *) mbswidth;
], ac_cv_have_decl_mbswidth=yes, ac_cv_have_decl_mbswidth=no)])
if test $ac_cv_have_decl_mbswidth = yes; then
ac_val=1
else
ac_val=0
fi
AC_DEFINE_UNQUOTED(HAVE_DECL_MBSWIDTH_IN_WCHAR_H, $ac_val,
[Define to 1 if you have a declaration of mbswidth() in <wchar.h>, and to 0 otherwise.])
AC_TYPE_MBSTATE_T
])
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