| 1 | # vasnprintf.m4 serial 35
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| 2 | dnl Copyright (C) 2002-2004, 2006-2012 Free Software Foundation, Inc.
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| 3 | dnl This file is free software; the Free Software Foundation
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| 4 | dnl gives unlimited permission to copy and/or distribute it,
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| 5 | dnl with or without modifications, as long as this notice is preserved.
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| 6 |
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| 7 | AC_DEFUN([gl_FUNC_VASNPRINTF],
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| 8 | [
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| 9 | AC_CHECK_FUNCS_ONCE([vasnprintf])
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| 10 | if test $ac_cv_func_vasnprintf = no; then
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| 11 | gl_REPLACE_VASNPRINTF
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| 12 | fi
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| 13 | ])
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| 14 |
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| 15 | AC_DEFUN([gl_REPLACE_VASNPRINTF],
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| 16 | [
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| 17 | AC_CHECK_FUNCS_ONCE([vasnprintf])
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| 18 | AC_LIBOBJ([vasnprintf])
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| 19 | AC_LIBOBJ([printf-args])
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| 20 | AC_LIBOBJ([printf-parse])
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| 21 | AC_LIBOBJ([asnprintf])
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| 22 | if test $ac_cv_func_vasnprintf = yes; then
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| 23 | AC_DEFINE([REPLACE_VASNPRINTF], [1],
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| 24 | [Define if vasnprintf exists but is overridden by gnulib.])
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| 25 | fi
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| 26 | gl_PREREQ_PRINTF_ARGS
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| 27 | gl_PREREQ_PRINTF_PARSE
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| 28 | gl_PREREQ_VASNPRINTF
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| 29 | gl_PREREQ_ASNPRINTF
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| 30 | ])
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| 31 |
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| 32 | # Prerequisites of lib/printf-args.h, lib/printf-args.c.
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| 33 | AC_DEFUN([gl_PREREQ_PRINTF_ARGS],
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| 34 | [
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| 35 | AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
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| 36 | AC_REQUIRE([gt_TYPE_WCHAR_T])
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| 37 | AC_REQUIRE([gt_TYPE_WINT_T])
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| 38 | ])
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| 39 |
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| 40 | # Prerequisites of lib/printf-parse.h, lib/printf-parse.c.
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| 41 | AC_DEFUN([gl_PREREQ_PRINTF_PARSE],
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| 42 | [
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| 43 | AC_REQUIRE([gl_FEATURES_H])
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| 44 | AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
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| 45 | AC_REQUIRE([gt_TYPE_WCHAR_T])
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| 46 | AC_REQUIRE([gt_TYPE_WINT_T])
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| 47 | AC_REQUIRE([AC_TYPE_SIZE_T])
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| 48 | AC_CHECK_TYPE([ptrdiff_t], ,
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| 49 | [AC_DEFINE([ptrdiff_t], [long],
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| 50 | [Define as the type of the result of subtracting two pointers, if the system doesn't define it.])
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| 51 | ])
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| 52 | AC_REQUIRE([gt_AC_TYPE_INTMAX_T])
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| 53 | ])
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| 54 |
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| 55 | # Prerequisites of lib/vasnprintf.c.
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| 56 | AC_DEFUN_ONCE([gl_PREREQ_VASNPRINTF],
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| 57 | [
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| 58 | AC_REQUIRE([AC_C_INLINE])
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| 59 | AC_REQUIRE([AC_FUNC_ALLOCA])
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| 60 | AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
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| 61 | AC_REQUIRE([gt_TYPE_WCHAR_T])
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| 62 | AC_REQUIRE([gt_TYPE_WINT_T])
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| 63 | AC_CHECK_FUNCS([snprintf strnlen wcslen wcsnlen mbrtowc wcrtomb])
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| 64 | dnl Use the _snprintf function only if it is declared (because on NetBSD it
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| 65 | dnl is defined as a weak alias of snprintf; we prefer to use the latter).
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| 66 | AC_CHECK_DECLS([_snprintf], , , [[#include <stdio.h>]])
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| 67 | dnl Knowing DBL_EXPBIT0_WORD and DBL_EXPBIT0_BIT enables an optimization
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| 68 | dnl in the code for NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_DOUBLE.
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| 69 | AC_REQUIRE([gl_DOUBLE_EXPONENT_LOCATION])
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| 70 | dnl We can avoid a lot of code by assuming that snprintf's return value
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| 71 | dnl conforms to ISO C99. So check that.
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| 72 | AC_REQUIRE([gl_SNPRINTF_RETVAL_C99])
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| 73 | case "$gl_cv_func_snprintf_retval_c99" in
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| 74 | *yes)
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| 75 | AC_DEFINE([HAVE_SNPRINTF_RETVAL_C99], [1],
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| 76 | [Define if the return value of the snprintf function is the number of
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| 77 | of bytes (excluding the terminating NUL) that would have been produced
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| 78 | if the buffer had been large enough.])
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| 79 | ;;
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| 80 | esac
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| 81 | ])
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| 82 |
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| 83 | # Extra prerequisites of lib/vasnprintf.c for supporting 'long double'
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| 84 | # arguments.
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| 85 | AC_DEFUN_ONCE([gl_PREREQ_VASNPRINTF_LONG_DOUBLE],
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| 86 | [
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| 87 | AC_REQUIRE([gl_PRINTF_LONG_DOUBLE])
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| 88 | case "$gl_cv_func_printf_long_double" in
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| 89 | *yes)
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| 90 | ;;
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| 91 | *)
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| 92 | AC_DEFINE([NEED_PRINTF_LONG_DOUBLE], [1],
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| 93 | [Define if the vasnprintf implementation needs special code for
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| 94 | 'long double' arguments.])
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| 95 | ;;
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| 96 | esac
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| 97 | ])
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| 98 |
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| 99 | # Extra prerequisites of lib/vasnprintf.c for supporting infinite 'double'
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| 100 | # arguments.
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| 101 | AC_DEFUN([gl_PREREQ_VASNPRINTF_INFINITE_DOUBLE],
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| 102 | [
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| 103 | AC_REQUIRE([gl_PRINTF_INFINITE])
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| 104 | case "$gl_cv_func_printf_infinite" in
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| 105 | *yes)
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| 106 | ;;
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| 107 | *)
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| 108 | AC_DEFINE([NEED_PRINTF_INFINITE_DOUBLE], [1],
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| 109 | [Define if the vasnprintf implementation needs special code for
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| 110 | infinite 'double' arguments.])
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| 111 | ;;
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| 112 | esac
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| 113 | ])
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| 114 |
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| 115 | # Extra prerequisites of lib/vasnprintf.c for supporting infinite 'long double'
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| 116 | # arguments.
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| 117 | AC_DEFUN([gl_PREREQ_VASNPRINTF_INFINITE_LONG_DOUBLE],
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| 118 | [
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| 119 | AC_REQUIRE([gl_PRINTF_INFINITE_LONG_DOUBLE])
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| 120 | dnl There is no need to set NEED_PRINTF_INFINITE_LONG_DOUBLE if
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| 121 | dnl NEED_PRINTF_LONG_DOUBLE is already set.
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| 122 | AC_REQUIRE([gl_PREREQ_VASNPRINTF_LONG_DOUBLE])
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| 123 | case "$gl_cv_func_printf_long_double" in
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| 124 | *yes)
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| 125 | case "$gl_cv_func_printf_infinite_long_double" in
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| 126 | *yes)
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| 127 | ;;
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| 128 | *)
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| 129 | AC_DEFINE([NEED_PRINTF_INFINITE_LONG_DOUBLE], [1],
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| 130 | [Define if the vasnprintf implementation needs special code for
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| 131 | infinite 'long double' arguments.])
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| 132 | ;;
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| 133 | esac
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| 134 | ;;
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| 135 | esac
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| 136 | ])
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| 137 |
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| 138 | # Extra prerequisites of lib/vasnprintf.c for supporting the 'a' directive.
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| 139 | AC_DEFUN([gl_PREREQ_VASNPRINTF_DIRECTIVE_A],
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| 140 | [
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| 141 | AC_REQUIRE([gl_PRINTF_DIRECTIVE_A])
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| 142 | case "$gl_cv_func_printf_directive_a" in
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| 143 | *yes)
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| 144 | ;;
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| 145 | *)
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| 146 | AC_DEFINE([NEED_PRINTF_DIRECTIVE_A], [1],
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| 147 | [Define if the vasnprintf implementation needs special code for
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| 148 | the 'a' and 'A' directives.])
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| 149 | AC_CHECK_FUNCS([nl_langinfo])
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| 150 | ;;
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| 151 | esac
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| 152 | ])
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| 153 |
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| 154 | # Extra prerequisites of lib/vasnprintf.c for supporting the 'F' directive.
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| 155 | AC_DEFUN([gl_PREREQ_VASNPRINTF_DIRECTIVE_F],
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| 156 | [
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| 157 | AC_REQUIRE([gl_PRINTF_DIRECTIVE_F])
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| 158 | case "$gl_cv_func_printf_directive_f" in
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| 159 | *yes)
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| 160 | ;;
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| 161 | *)
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| 162 | AC_DEFINE([NEED_PRINTF_DIRECTIVE_F], [1],
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| 163 | [Define if the vasnprintf implementation needs special code for
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| 164 | the 'F' directive.])
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| 165 | ;;
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| 166 | esac
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| 167 | ])
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| 168 |
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| 169 | # Extra prerequisites of lib/vasnprintf.c for supporting the 'ls' directive.
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| 170 | AC_DEFUN([gl_PREREQ_VASNPRINTF_DIRECTIVE_LS],
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| 171 | [
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| 172 | AC_REQUIRE([gl_PRINTF_DIRECTIVE_LS])
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| 173 | case "$gl_cv_func_printf_directive_ls" in
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| 174 | *yes)
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| 175 | ;;
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| 176 | *)
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| 177 | AC_DEFINE([NEED_PRINTF_DIRECTIVE_LS], [1],
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| 178 | [Define if the vasnprintf implementation needs special code for
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| 179 | the 'ls' directive.])
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| 180 | ;;
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| 181 | esac
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| 182 | ])
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| 183 |
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| 184 | # Extra prerequisites of lib/vasnprintf.c for supporting the ' flag.
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| 185 | AC_DEFUN([gl_PREREQ_VASNPRINTF_FLAG_GROUPING],
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| 186 | [
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| 187 | AC_REQUIRE([gl_PRINTF_FLAG_GROUPING])
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| 188 | case "$gl_cv_func_printf_flag_grouping" in
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| 189 | *yes)
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| 190 | ;;
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| 191 | *)
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| 192 | AC_DEFINE([NEED_PRINTF_FLAG_GROUPING], [1],
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| 193 | [Define if the vasnprintf implementation needs special code for the
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| 194 | ' flag.])
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| 195 | ;;
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| 196 | esac
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| 197 | ])
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| 198 |
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| 199 | # Extra prerequisites of lib/vasnprintf.c for supporting the '-' flag.
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| 200 | AC_DEFUN([gl_PREREQ_VASNPRINTF_FLAG_LEFTADJUST],
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| 201 | [
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| 202 | AC_REQUIRE([gl_PRINTF_FLAG_LEFTADJUST])
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| 203 | case "$gl_cv_func_printf_flag_leftadjust" in
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| 204 | *yes)
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| 205 | ;;
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| 206 | *)
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| 207 | AC_DEFINE([NEED_PRINTF_FLAG_LEFTADJUST], [1],
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| 208 | [Define if the vasnprintf implementation needs special code for the
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| 209 | '-' flag.])
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| 210 | ;;
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| 211 | esac
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| 212 | ])
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| 213 |
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| 214 | # Extra prerequisites of lib/vasnprintf.c for supporting the 0 flag.
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| 215 | AC_DEFUN([gl_PREREQ_VASNPRINTF_FLAG_ZERO],
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| 216 | [
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| 217 | AC_REQUIRE([gl_PRINTF_FLAG_ZERO])
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| 218 | case "$gl_cv_func_printf_flag_zero" in
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| 219 | *yes)
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| 220 | ;;
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| 221 | *)
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| 222 | AC_DEFINE([NEED_PRINTF_FLAG_ZERO], [1],
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| 223 | [Define if the vasnprintf implementation needs special code for the
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| 224 | 0 flag.])
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| 225 | ;;
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| 226 | esac
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| 227 | ])
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| 228 |
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| 229 | # Extra prerequisites of lib/vasnprintf.c for supporting large precisions.
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| 230 | AC_DEFUN([gl_PREREQ_VASNPRINTF_PRECISION],
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| 231 | [
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| 232 | AC_REQUIRE([gl_PRINTF_PRECISION])
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| 233 | case "$gl_cv_func_printf_precision" in
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| 234 | *yes)
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| 235 | ;;
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| 236 | *)
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| 237 | AC_DEFINE([NEED_PRINTF_UNBOUNDED_PRECISION], [1],
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| 238 | [Define if the vasnprintf implementation needs special code for
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| 239 | supporting large precisions without arbitrary bounds.])
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| 240 | AC_DEFINE([NEED_PRINTF_DOUBLE], [1],
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| 241 | [Define if the vasnprintf implementation needs special code for
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| 242 | 'double' arguments.])
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| 243 | AC_DEFINE([NEED_PRINTF_LONG_DOUBLE], [1],
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| 244 | [Define if the vasnprintf implementation needs special code for
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| 245 | 'long double' arguments.])
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| 246 | ;;
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| 247 | esac
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| 248 | ])
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| 249 |
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| 250 | # Extra prerequisites of lib/vasnprintf.c for surviving out-of-memory
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| 251 | # conditions.
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| 252 | AC_DEFUN([gl_PREREQ_VASNPRINTF_ENOMEM],
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| 253 | [
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| 254 | AC_REQUIRE([gl_PRINTF_ENOMEM])
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| 255 | case "$gl_cv_func_printf_enomem" in
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| 256 | *yes)
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| 257 | ;;
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| 258 | *)
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| 259 | AC_DEFINE([NEED_PRINTF_ENOMEM], [1],
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| 260 | [Define if the vasnprintf implementation needs special code for
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| 261 | surviving out-of-memory conditions.])
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| 262 | AC_DEFINE([NEED_PRINTF_DOUBLE], [1],
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| 263 | [Define if the vasnprintf implementation needs special code for
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| 264 | 'double' arguments.])
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| 265 | AC_DEFINE([NEED_PRINTF_LONG_DOUBLE], [1],
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| 266 | [Define if the vasnprintf implementation needs special code for
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| 267 | 'long double' arguments.])
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| 268 | ;;
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| 269 | esac
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| 270 | ])
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| 271 |
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| 272 | # Prerequisites of lib/vasnprintf.c including all extras for POSIX compliance.
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| 273 | AC_DEFUN([gl_PREREQ_VASNPRINTF_WITH_EXTRAS],
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| 274 | [
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| 275 | AC_REQUIRE([gl_PREREQ_VASNPRINTF])
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| 276 | gl_PREREQ_VASNPRINTF_LONG_DOUBLE
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| 277 | gl_PREREQ_VASNPRINTF_INFINITE_DOUBLE
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| 278 | gl_PREREQ_VASNPRINTF_INFINITE_LONG_DOUBLE
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| 279 | gl_PREREQ_VASNPRINTF_DIRECTIVE_A
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| 280 | gl_PREREQ_VASNPRINTF_DIRECTIVE_F
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| 281 | gl_PREREQ_VASNPRINTF_DIRECTIVE_LS
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| 282 | gl_PREREQ_VASNPRINTF_FLAG_GROUPING
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| 283 | gl_PREREQ_VASNPRINTF_FLAG_LEFTADJUST
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| 284 | gl_PREREQ_VASNPRINTF_FLAG_ZERO
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| 285 | gl_PREREQ_VASNPRINTF_PRECISION
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| 286 | gl_PREREQ_VASNPRINTF_ENOMEM
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| 287 | ])
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| 288 |
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| 289 | # Prerequisites of lib/asnprintf.c.
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| 290 | AC_DEFUN([gl_PREREQ_ASNPRINTF],
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| 291 | [
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| 292 | ])
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