298 lines
8.9 KiB
Text
298 lines
8.9 KiB
Text
# vasnprintf.m4 serial 38
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dnl Copyright (C) 2002-2004, 2006-2023 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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AC_DEFUN([gl_FUNC_VASNPRINTF],
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[
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AC_CHECK_FUNCS_ONCE([vasnprintf])
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if test $ac_cv_func_vasnprintf = no; then
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gl_REPLACE_VASNPRINTF
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fi
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])
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AC_DEFUN([gl_REPLACE_VASNPRINTF],
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[
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AC_CHECK_FUNCS_ONCE([vasnprintf])
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AC_LIBOBJ([vasnprintf])
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AC_LIBOBJ([printf-args])
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AC_LIBOBJ([printf-parse])
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AC_LIBOBJ([asnprintf])
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if test $ac_cv_func_vasnprintf = yes; then
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AC_DEFINE([REPLACE_VASNPRINTF], [1],
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[Define if vasnprintf exists but is overridden by gnulib.])
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fi
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gl_PREREQ_PRINTF_ARGS
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gl_PREREQ_PRINTF_PARSE
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gl_PREREQ_VASNPRINTF
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gl_PREREQ_ASNPRINTF
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])
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# Prerequisites of lib/printf-args.h, lib/printf-args.c.
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AC_DEFUN([gl_PREREQ_PRINTF_ARGS],
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[
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AC_REQUIRE([gt_TYPE_WCHAR_T])
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AC_REQUIRE([gt_TYPE_WINT_T])
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])
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# Prerequisites of lib/printf-parse.h, lib/printf-parse.c.
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AC_DEFUN([gl_PREREQ_PRINTF_PARSE],
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[
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AC_REQUIRE([gl_FEATURES_H])
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AC_REQUIRE([gt_TYPE_WCHAR_T])
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AC_REQUIRE([gt_TYPE_WINT_T])
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AC_REQUIRE([AC_TYPE_SIZE_T])
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AC_CHECK_TYPE([ptrdiff_t], ,
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[AC_DEFINE([ptrdiff_t], [long],
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[Define as the type of the result of subtracting two pointers, if the system doesn't define it.])
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])
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AC_REQUIRE([gt_AC_TYPE_INTMAX_T])
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])
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# Prerequisites of lib/vasnprintf.c.
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AC_DEFUN_ONCE([gl_PREREQ_VASNPRINTF],
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[
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AC_REQUIRE([AC_FUNC_ALLOCA])
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AC_REQUIRE([gt_TYPE_WCHAR_T])
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AC_REQUIRE([gt_TYPE_WINT_T])
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AC_CHECK_FUNCS([snprintf strnlen wcslen wcsnlen mbrtowc wcrtomb])
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dnl Use the _snprintf function only if it is declared (because on NetBSD it
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dnl is defined as a weak alias of snprintf; we prefer to use the latter).
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AC_CHECK_DECLS([_snprintf], , , [[#include <stdio.h>]])
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dnl Knowing DBL_EXPBIT0_WORD and DBL_EXPBIT0_BIT enables an optimization
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dnl in the code for NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_DOUBLE.
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AC_REQUIRE([gl_DOUBLE_EXPONENT_LOCATION])
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dnl We can avoid a lot of code by assuming that snprintf's return value
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dnl conforms to ISO C99. So check that.
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AC_REQUIRE([gl_SNPRINTF_RETVAL_C99])
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case "$gl_cv_func_snprintf_retval_c99" in
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*yes)
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AC_DEFINE([HAVE_SNPRINTF_RETVAL_C99], [1],
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[Define if the return value of the snprintf function is the number of
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of bytes (excluding the terminating NUL) that would have been produced
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if the buffer had been large enough.])
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;;
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esac
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dnl Additionally, the use of %n can be eliminated by assuming that snprintf
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dnl always produces NUL-terminated strings (no truncation).
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AC_REQUIRE([gl_SNPRINTF_TRUNCATION_C99])
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case "$gl_cv_func_snprintf_truncation_c99" in
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*yes)
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AC_DEFINE([HAVE_SNPRINTF_TRUNCATION_C99], [1],
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[Define if the string produced by the snprintf function is always NUL
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terminated.])
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;;
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esac
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])
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# Extra prerequisites of lib/vasnprintf.c for supporting 'long double'
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# arguments.
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AC_DEFUN_ONCE([gl_PREREQ_VASNPRINTF_LONG_DOUBLE],
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[
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AC_REQUIRE([gl_PRINTF_LONG_DOUBLE])
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case "$gl_cv_func_printf_long_double" in
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*yes)
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;;
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*)
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AC_DEFINE([NEED_PRINTF_LONG_DOUBLE], [1],
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[Define if the vasnprintf implementation needs special code for
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'long double' arguments.])
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;;
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esac
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])
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# Extra prerequisites of lib/vasnprintf.c for supporting infinite 'double'
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# arguments.
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AC_DEFUN([gl_PREREQ_VASNPRINTF_INFINITE_DOUBLE],
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[
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AC_REQUIRE([gl_PRINTF_INFINITE])
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case "$gl_cv_func_printf_infinite" in
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*yes)
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;;
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*)
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AC_DEFINE([NEED_PRINTF_INFINITE_DOUBLE], [1],
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[Define if the vasnprintf implementation needs special code for
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infinite 'double' arguments.])
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;;
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esac
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])
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# Extra prerequisites of lib/vasnprintf.c for supporting infinite 'long double'
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# arguments.
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AC_DEFUN([gl_PREREQ_VASNPRINTF_INFINITE_LONG_DOUBLE],
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[
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AC_REQUIRE([gl_PRINTF_INFINITE_LONG_DOUBLE])
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dnl There is no need to set NEED_PRINTF_INFINITE_LONG_DOUBLE if
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dnl NEED_PRINTF_LONG_DOUBLE is already set.
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AC_REQUIRE([gl_PREREQ_VASNPRINTF_LONG_DOUBLE])
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case "$gl_cv_func_printf_long_double" in
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*yes)
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case "$gl_cv_func_printf_infinite_long_double" in
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*yes)
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;;
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*)
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AC_DEFINE([NEED_PRINTF_INFINITE_LONG_DOUBLE], [1],
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[Define if the vasnprintf implementation needs special code for
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infinite 'long double' arguments.])
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;;
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esac
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;;
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esac
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])
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# Extra prerequisites of lib/vasnprintf.c for supporting the 'a' directive.
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AC_DEFUN([gl_PREREQ_VASNPRINTF_DIRECTIVE_A],
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[
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AC_REQUIRE([gl_PRINTF_DIRECTIVE_A])
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case "$gl_cv_func_printf_directive_a" in
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*yes)
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;;
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*)
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AC_DEFINE([NEED_PRINTF_DIRECTIVE_A], [1],
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[Define if the vasnprintf implementation needs special code for
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the 'a' and 'A' directives.])
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AC_CHECK_FUNCS([nl_langinfo])
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;;
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esac
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])
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# Extra prerequisites of lib/vasnprintf.c for supporting the 'F' directive.
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AC_DEFUN([gl_PREREQ_VASNPRINTF_DIRECTIVE_F],
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[
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AC_REQUIRE([gl_PRINTF_DIRECTIVE_F])
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case "$gl_cv_func_printf_directive_f" in
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*yes)
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;;
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*)
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AC_DEFINE([NEED_PRINTF_DIRECTIVE_F], [1],
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[Define if the vasnprintf implementation needs special code for
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the 'F' directive.])
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;;
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esac
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])
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# Extra prerequisites of lib/vasnprintf.c for supporting the 'ls' directive.
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AC_DEFUN([gl_PREREQ_VASNPRINTF_DIRECTIVE_LS],
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[
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AC_REQUIRE([gl_PRINTF_DIRECTIVE_LS])
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case "$gl_cv_func_printf_directive_ls" in
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*yes)
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;;
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*)
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AC_DEFINE([NEED_PRINTF_DIRECTIVE_LS], [1],
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[Define if the vasnprintf implementation needs special code for
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the 'ls' directive.])
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;;
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esac
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])
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# Extra prerequisites of lib/vasnprintf.c for supporting the ' flag.
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AC_DEFUN([gl_PREREQ_VASNPRINTF_FLAG_GROUPING],
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[
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AC_REQUIRE([gl_PRINTF_FLAG_GROUPING])
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case "$gl_cv_func_printf_flag_grouping" in
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*yes)
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;;
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*)
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AC_DEFINE([NEED_PRINTF_FLAG_GROUPING], [1],
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[Define if the vasnprintf implementation needs special code for the
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' flag.])
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;;
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esac
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])
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# Extra prerequisites of lib/vasnprintf.c for supporting the '-' flag.
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AC_DEFUN([gl_PREREQ_VASNPRINTF_FLAG_LEFTADJUST],
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[
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AC_REQUIRE([gl_PRINTF_FLAG_LEFTADJUST])
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case "$gl_cv_func_printf_flag_leftadjust" in
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*yes)
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;;
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*)
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AC_DEFINE([NEED_PRINTF_FLAG_LEFTADJUST], [1],
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[Define if the vasnprintf implementation needs special code for the
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'-' flag.])
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;;
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esac
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])
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# Extra prerequisites of lib/vasnprintf.c for supporting the 0 flag.
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AC_DEFUN([gl_PREREQ_VASNPRINTF_FLAG_ZERO],
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[
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AC_REQUIRE([gl_PRINTF_FLAG_ZERO])
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case "$gl_cv_func_printf_flag_zero" in
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*yes)
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;;
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*)
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AC_DEFINE([NEED_PRINTF_FLAG_ZERO], [1],
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[Define if the vasnprintf implementation needs special code for the
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0 flag.])
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;;
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esac
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])
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# Extra prerequisites of lib/vasnprintf.c for supporting large precisions.
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AC_DEFUN([gl_PREREQ_VASNPRINTF_PRECISION],
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[
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AC_REQUIRE([gl_PRINTF_PRECISION])
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case "$gl_cv_func_printf_precision" in
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*yes)
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;;
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*)
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AC_DEFINE([NEED_PRINTF_UNBOUNDED_PRECISION], [1],
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[Define if the vasnprintf implementation needs special code for
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supporting large precisions without arbitrary bounds.])
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AC_DEFINE([NEED_PRINTF_DOUBLE], [1],
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[Define if the vasnprintf implementation needs special code for
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'double' arguments.])
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AC_DEFINE([NEED_PRINTF_LONG_DOUBLE], [1],
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[Define if the vasnprintf implementation needs special code for
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'long double' arguments.])
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;;
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esac
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])
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# Extra prerequisites of lib/vasnprintf.c for surviving out-of-memory
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# conditions.
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AC_DEFUN([gl_PREREQ_VASNPRINTF_ENOMEM],
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[
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AC_REQUIRE([gl_PRINTF_ENOMEM])
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case "$gl_cv_func_printf_enomem" in
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*yes)
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;;
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*)
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AC_DEFINE([NEED_PRINTF_ENOMEM], [1],
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[Define if the vasnprintf implementation needs special code for
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surviving out-of-memory conditions.])
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AC_DEFINE([NEED_PRINTF_DOUBLE], [1],
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[Define if the vasnprintf implementation needs special code for
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'double' arguments.])
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AC_DEFINE([NEED_PRINTF_LONG_DOUBLE], [1],
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[Define if the vasnprintf implementation needs special code for
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'long double' arguments.])
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;;
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esac
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])
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# Prerequisites of lib/vasnprintf.c including all extras for POSIX compliance.
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AC_DEFUN([gl_PREREQ_VASNPRINTF_WITH_EXTRAS],
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[
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AC_REQUIRE([gl_PREREQ_VASNPRINTF])
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gl_PREREQ_VASNPRINTF_LONG_DOUBLE
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gl_PREREQ_VASNPRINTF_INFINITE_DOUBLE
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gl_PREREQ_VASNPRINTF_INFINITE_LONG_DOUBLE
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gl_PREREQ_VASNPRINTF_DIRECTIVE_A
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gl_PREREQ_VASNPRINTF_DIRECTIVE_F
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gl_PREREQ_VASNPRINTF_DIRECTIVE_LS
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gl_PREREQ_VASNPRINTF_FLAG_GROUPING
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gl_PREREQ_VASNPRINTF_FLAG_LEFTADJUST
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gl_PREREQ_VASNPRINTF_FLAG_ZERO
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gl_PREREQ_VASNPRINTF_PRECISION
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gl_PREREQ_VASNPRINTF_ENOMEM
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])
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# Prerequisites of lib/asnprintf.c.
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AC_DEFUN([gl_PREREQ_ASNPRINTF],
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[
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])
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