1# snprintf.m4 serial 6
2dnl Copyright (C) 2002-2004, 2007-2012 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7dnl Libintl 0.17 will replace snprintf only if it does not support %1$s,
8dnl but defers to any gnulib snprintf replacements.  Therefore, gnulib
9dnl must guarantee that the decision for replacing snprintf is a superset
10dnl of the reasons checked by libintl.
11AC_DEFUN([gl_FUNC_SNPRINTF],
12[
13  AC_REQUIRE([gl_STDIO_H_DEFAULTS])
14  gl_cv_func_snprintf_usable=no
15  AC_CHECK_FUNCS([snprintf])
16  if test $ac_cv_func_snprintf = yes; then
17    gl_SNPRINTF_SIZE1
18    case "$gl_cv_func_snprintf_size1" in
19      *yes)
20        gl_SNPRINTF_RETVAL_C99
21        case "$gl_cv_func_snprintf_retval_c99" in
22          *yes)
23            gl_PRINTF_POSITIONS
24            case "$gl_cv_func_printf_positions" in
25              *yes)
26                gl_cv_func_snprintf_usable=yes
27                ;;
28            esac
29            ;;
30        esac
31        ;;
32    esac
33  fi
34  if test $gl_cv_func_snprintf_usable = no; then
35    gl_REPLACE_SNPRINTF
36  fi
37  AC_CHECK_DECLS_ONCE([snprintf])
38  if test $ac_cv_have_decl_snprintf = no; then
39    HAVE_DECL_SNPRINTF=0
40  fi
41])
42
43AC_DEFUN([gl_REPLACE_SNPRINTF],
44[
45  AC_REQUIRE([gl_STDIO_H_DEFAULTS])
46  AC_LIBOBJ([snprintf])
47  if test $ac_cv_func_snprintf = yes; then
48    REPLACE_SNPRINTF=1
49  fi
50  gl_PREREQ_SNPRINTF
51])
52
53# Prerequisites of lib/snprintf.c.
54AC_DEFUN([gl_PREREQ_SNPRINTF], [:])
55