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# snprintf-posix.m4
# serial 23
dnl Copyright (C) 2007-2025 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl This file is offered as-is, without any warranty.
AC_DEFUN([gl_FUNC_SNPRINTF_POSIX],
[
AC_REQUIRE([gl_FUNC_SNPRINTF_IS_POSIX])
if test $gl_cv_func_snprintf_posix = no; then
gl_PREREQ_VASNPRINTF_WITH_POSIX_EXTRAS
gl_REPLACE_VASNPRINTF
gl_REPLACE_SNPRINTF
fi
])
dnl Test whether snprintf exists and is POSIX compliant.
dnl Result is gl_cv_func_snprintf_posix.
AC_DEFUN([gl_FUNC_SNPRINTF_IS_POSIX],
[
AC_REQUIRE([gl_PRINTF_SIZES_C99])
AC_REQUIRE([gl_PRINTF_SIZES_C23])
AC_REQUIRE([gl_PRINTF_LONG_DOUBLE])
AC_REQUIRE([gl_PRINTF_INFINITE])
AC_REQUIRE([gl_PRINTF_INFINITE_LONG_DOUBLE])
AC_REQUIRE([gl_PRINTF_DIRECTIVE_A])
AC_REQUIRE([gl_PRINTF_DIRECTIVE_B])
AC_REQUIRE([gl_PRINTF_DIRECTIVE_F])
m4_ifdef([gl_PRINTF_SUPPORT_N_DIRECTIVE],[AC_REQUIRE([gl_PRINTF_DIRECTIVE_N])])
AC_REQUIRE([gl_PRINTF_DIRECTIVE_LS])
AC_REQUIRE([gl_PRINTF_DIRECTIVE_LC])
AC_REQUIRE([gl_PRINTF_POSITIONS])
AC_REQUIRE([gl_PRINTF_FLAG_GROUPING])
AC_REQUIRE([gl_PRINTF_FLAG_GROUPING_INT_PRECISION])
AC_REQUIRE([gl_PRINTF_FLAG_GROUPING_MULTIBYTE])
AC_REQUIRE([gl_PRINTF_FLAG_LEFTADJUST])
AC_REQUIRE([gl_PRINTF_FLAG_ZERO])
AC_REQUIRE([gl_PRINTF_FLAG_ALT_PRECISION_ZERO])
AC_REQUIRE([gl_PRINTF_PRECISION])
AC_REQUIRE([gl_PRINTF_ENOMEM])
gl_cv_func_snprintf_posix=no
AC_CHECK_FUNCS([snprintf])
if test $ac_cv_func_snprintf = yes; then
gl_SNPRINTF_TRUNCATION_C99
gl_SNPRINTF_RETVAL_C99
gl_SNPRINTF_DIRECTIVE_N
gl_SNPRINTF_SIZE1
gl_VSNPRINTF_ZEROSIZE_C99
case "$gl_cv_func_printf_sizes_c99" in
*yes)
case "$gl_cv_func_printf_sizes_c23" in
*yes)
case "$gl_cv_func_printf_long_double" in
*yes)
case "$gl_cv_func_printf_infinite" in
*yes)
case "$gl_cv_func_printf_infinite_long_double" in
*yes)
case "$gl_cv_func_printf_directive_a" in
*yes)
case "$gl_cv_func_printf_directive_b" in
*yes)
case "$gl_cv_func_printf_directive_f" in
*yes)
case m4_ifdef([gl_PRINTF_SUPPORT_N_DIRECTIVE],["$gl_cv_func_printf_directive_n"],["yes"]) in
*yes)
case "$gl_cv_func_printf_directive_ls" in
*yes)
case "$gl_cv_func_printf_directive_lc" in
*yes)
case "$gl_cv_func_printf_positions" in
*yes)
case "$gl_cv_func_printf_flag_grouping" in
*yes)
case "$gl_cv_func_printf_flag_grouping_int_precision" in
*yes)
case "$gl_cv_func_printf_flag_grouping_multibyte" in
*yes)
case "$gl_cv_func_printf_flag_leftadjust" in
*yes)
case "$gl_cv_func_printf_flag_zero" in
*yes)
case "$gl_cv_func_printf_flag_alt_precision_zero" in
*yes)
case "$gl_cv_func_printf_precision" in
*yes)
case "$gl_cv_func_printf_enomem" in
*yes)
case "$gl_cv_func_snprintf_truncation_c99" in
*yes)
case "$gl_cv_func_snprintf_retval_c99" in
*yes)
case m4_ifdef([gl_PRINTF_SUPPORT_N_DIRECTIVE],["$gl_cv_func_snprintf_directive_n"],["yes"]) in
*yes)
case "$gl_cv_func_snprintf_size1" in
*yes)
case "$gl_cv_func_vsnprintf_zerosize_c99" in
*yes)
# snprintf exists and is
# already POSIX compliant.
gl_cv_func_snprintf_posix=yes
;;
esac
;;
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esac
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esac
fi
])
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