1 # vasnprintf-posix.m4 serial 1
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_VASNPRINTF_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_N])
13 AC_REQUIRE([gl_PRINTF_POSITIONS])
14 AC_CHECK_FUNCS([vasnprintf])
15 if expr "$gl_cv_func_printf_sizes_c99" : ".*yes" > /dev/null \
16 && expr "$gl_cv_func_printf_directive_a" : ".*yes" > /dev/null \
17 && expr "$gl_cv_func_printf_directive_n" : ".*yes" > /dev/null \
18 && expr "$gl_cv_func_printf_positions" : ".*yes" > /dev/null \
19 && test $ac_cv_func_vasnprintf = yes; then
20 : # vasnprintf exists and is already POSIX compliant.
22 if ! expr "$gl_cv_func_printf_directive_a" : ".*yes" > /dev/null; then
23 AC_DEFINE([NEED_PRINTF_DIRECTIVE_A], 1,
24 [Define if the vasnprintf implementation needs special code for
25 the 'a' and 'A' directives.])