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Annotation of embedaddon/libiconv/srcm4/wchar.m4, revision 1.1

1.1     ! misho       1: dnl A placeholder for ISO C99 <wchar.h>, for platforms that have issues.
        !             2: 
        !             3: dnl Copyright (C) 2007-2009 Free Software Foundation, Inc.
        !             4: dnl This file is free software; the Free Software Foundation
        !             5: dnl gives unlimited permission to copy and/or distribute it,
        !             6: dnl with or without modifications, as long as this notice is preserved.
        !             7: 
        !             8: dnl Written by Eric Blake.
        !             9: 
        !            10: # wchar.m4 serial 23
        !            11: 
        !            12: AC_DEFUN([gl_WCHAR_H],
        !            13: [
        !            14:   AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
        !            15:   AC_CACHE_CHECK([whether <wchar.h> is standalone],
        !            16:     [gl_cv_header_wchar_h_standalone],
        !            17:     [AC_COMPILE_IFELSE([[#include <wchar.h>
        !            18: wchar_t w;]],
        !            19:       [gl_cv_header_wchar_h_standalone=yes],
        !            20:       [gl_cv_header_wchar_h_standalone=no])])
        !            21: 
        !            22:   AC_REQUIRE([gt_TYPE_WINT_T])
        !            23:   if test $gt_cv_c_wint_t = yes; then
        !            24:     HAVE_WINT_T=1
        !            25:   else
        !            26:     HAVE_WINT_T=0
        !            27:   fi
        !            28:   AC_SUBST([HAVE_WINT_T])
        !            29: 
        !            30:   if test $gl_cv_header_wchar_h_standalone != yes || test $gt_cv_c_wint_t != yes; then
        !            31:     WCHAR_H=wchar.h
        !            32:   fi
        !            33: 
        !            34:   dnl Prepare for creating substitute <wchar.h>.
        !            35:   dnl Do it always: WCHAR_H may be empty here but can be set later.
        !            36:   dnl Check for <wchar.h> (missing in Linux uClibc when built without wide
        !            37:   dnl character support).
        !            38:   AC_CHECK_HEADERS_ONCE([wchar.h])
        !            39:   if test $ac_cv_header_wchar_h = yes; then
        !            40:     HAVE_WCHAR_H=1
        !            41:   else
        !            42:     HAVE_WCHAR_H=0
        !            43:   fi
        !            44:   AC_SUBST([HAVE_WCHAR_H])
        !            45:   gl_CHECK_NEXT_HEADERS([wchar.h])
        !            46: ])
        !            47: 
        !            48: dnl Unconditionally enables the replacement of <wchar.h>.
        !            49: AC_DEFUN([gl_REPLACE_WCHAR_H],
        !            50: [
        !            51:   AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
        !            52:   WCHAR_H=wchar.h
        !            53: ])
        !            54: 
        !            55: AC_DEFUN([gl_WCHAR_MODULE_INDICATOR],
        !            56: [
        !            57:   dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
        !            58:   AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
        !            59:   GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
        !            60: ])
        !            61: 
        !            62: AC_DEFUN([gl_WCHAR_H_DEFAULTS],
        !            63: [
        !            64:   GNULIB_BTOWC=0;      AC_SUBST([GNULIB_BTOWC])
        !            65:   GNULIB_WCTOB=0;      AC_SUBST([GNULIB_WCTOB])
        !            66:   GNULIB_MBSINIT=0;    AC_SUBST([GNULIB_MBSINIT])
        !            67:   GNULIB_MBRTOWC=0;    AC_SUBST([GNULIB_MBRTOWC])
        !            68:   GNULIB_MBRLEN=0;     AC_SUBST([GNULIB_MBRLEN])
        !            69:   GNULIB_MBSRTOWCS=0;  AC_SUBST([GNULIB_MBSRTOWCS])
        !            70:   GNULIB_MBSNRTOWCS=0; AC_SUBST([GNULIB_MBSNRTOWCS])
        !            71:   GNULIB_WCRTOMB=0;    AC_SUBST([GNULIB_WCRTOMB])
        !            72:   GNULIB_WCSRTOMBS=0;  AC_SUBST([GNULIB_WCSRTOMBS])
        !            73:   GNULIB_WCSNRTOMBS=0; AC_SUBST([GNULIB_WCSNRTOMBS])
        !            74:   GNULIB_WCWIDTH=0;    AC_SUBST([GNULIB_WCWIDTH])
        !            75:   dnl Assume proper GNU behavior unless another module says otherwise.
        !            76:   HAVE_BTOWC=1;         AC_SUBST([HAVE_BTOWC])
        !            77:   HAVE_MBSINIT=1;       AC_SUBST([HAVE_MBSINIT])
        !            78:   HAVE_MBRTOWC=1;       AC_SUBST([HAVE_MBRTOWC])
        !            79:   HAVE_MBRLEN=1;        AC_SUBST([HAVE_MBRLEN])
        !            80:   HAVE_MBSRTOWCS=1;     AC_SUBST([HAVE_MBSRTOWCS])
        !            81:   HAVE_MBSNRTOWCS=1;    AC_SUBST([HAVE_MBSNRTOWCS])
        !            82:   HAVE_WCRTOMB=1;       AC_SUBST([HAVE_WCRTOMB])
        !            83:   HAVE_WCSRTOMBS=1;     AC_SUBST([HAVE_WCSRTOMBS])
        !            84:   HAVE_WCSNRTOMBS=1;    AC_SUBST([HAVE_WCSNRTOMBS])
        !            85:   HAVE_DECL_WCTOB=1;    AC_SUBST([HAVE_DECL_WCTOB])
        !            86:   HAVE_DECL_WCWIDTH=1;  AC_SUBST([HAVE_DECL_WCWIDTH])
        !            87:   REPLACE_MBSTATE_T=0;  AC_SUBST([REPLACE_MBSTATE_T])
        !            88:   REPLACE_BTOWC=0;      AC_SUBST([REPLACE_BTOWC])
        !            89:   REPLACE_WCTOB=0;      AC_SUBST([REPLACE_WCTOB])
        !            90:   REPLACE_MBSINIT=0;    AC_SUBST([REPLACE_MBSINIT])
        !            91:   REPLACE_MBRTOWC=0;    AC_SUBST([REPLACE_MBRTOWC])
        !            92:   REPLACE_MBRLEN=0;     AC_SUBST([REPLACE_MBRLEN])
        !            93:   REPLACE_MBSRTOWCS=0;  AC_SUBST([REPLACE_MBSRTOWCS])
        !            94:   REPLACE_MBSNRTOWCS=0; AC_SUBST([REPLACE_MBSNRTOWCS])
        !            95:   REPLACE_WCRTOMB=0;    AC_SUBST([REPLACE_WCRTOMB])
        !            96:   REPLACE_WCSRTOMBS=0;  AC_SUBST([REPLACE_WCSRTOMBS])
        !            97:   REPLACE_WCSNRTOMBS=0; AC_SUBST([REPLACE_WCSNRTOMBS])
        !            98:   REPLACE_WCWIDTH=0;    AC_SUBST([REPLACE_WCWIDTH])
        !            99:   WCHAR_H='';           AC_SUBST([WCHAR_H])
        !           100: ])