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 ]) 101
