1 # vsnprintf-posix.m4 serial 3
2 dnl Copyright (C) 2007 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
7 AC_DEFUN([gl_FUNC_VSNPRINTF_POSIX],
9 AC_REQUIRE([gl_EOVERFLOW])
10 AC_REQUIRE([gl_PRINTF_SIZES_C99])
11 AC_REQUIRE([gl_PRINTF_DIRECTIVE_A])
12 AC_REQUIRE([gl_PRINTF_DIRECTIVE_F])
13 AC_REQUIRE([gl_PRINTF_DIRECTIVE_N])
14 AC_REQUIRE([gl_PRINTF_POSITIONS])
15 gl_cv_func_vsnprintf_posix=no
16 AC_CHECK_FUNCS([vsnprintf])
17 if test $ac_cv_func_vsnprintf = yes; then
18 dnl Assume that if vsnprintf() exists, snprintf() also exists.
19 gl_SNPRINTF_TRUNCATION_C99
20 gl_SNPRINTF_RETVAL_C99
21 gl_SNPRINTF_DIRECTIVE_N
22 case "$gl_cv_func_printf_sizes_c99" in
24 case "$gl_cv_func_printf_directive_a" in
26 case "$gl_cv_func_printf_directive_f" in
28 case "$gl_cv_func_printf_directive_n" in
30 case "$gl_cv_func_printf_positions" in
32 case "$gl_cv_func_snprintf_truncation_c99" in
34 case "$gl_cv_func_snprintf_retval_c99" in
36 case "$gl_cv_func_snprintf_directive_n" in
38 # vsnprintf exists and is already POSIX
40 gl_cv_func_vsnprintf_posix=yes
58 if test $gl_cv_func_vsnprintf_posix = no; then
59 gl_PREREQ_VASNPRINTF_DIRECTIVE_A
60 gl_PREREQ_VASNPRINTF_DIRECTIVE_F