m4/vsnprintf.m4

   1 # vsnprintf.m4 serial 6
   2 dnl Copyright (C) 2002-2004, 2007-2014 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.
   6
   7 dnl Libintl 0.17 will replace vsnprintf only if it does not support %1$s,
   8 dnl but defers to any gnulib vsnprintf replacements.  Therefore, gnulib
   9 dnl must guarantee that the decision for replacing vsnprintf is a superset
  10 dnl of the reasons checked by libintl.
  11 AC_DEFUN([gl_FUNC_VSNPRINTF],
  12 [
  13   AC_REQUIRE([gl_STDIO_H_DEFAULTS])
  14   gl_cv_func_vsnprintf_usable=no
  15   AC_CHECK_FUNCS([vsnprintf])
  16   if test $ac_cv_func_vsnprintf = yes; then
  17     gl_SNPRINTF_SIZE1
  18     case "$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_vsnprintf_usable=yes
  27                 ;;
  28             esac
  29             ;;
  30         esac
  31         ;;
  32     esac
  33   fi
  34   if test $gl_cv_func_vsnprintf_usable = no; then
  35     gl_REPLACE_VSNPRINTF
  36   fi
  37   AC_CHECK_DECLS_ONCE([vsnprintf])
  38   if test $ac_cv_have_decl_vsnprintf = no; then
  39     HAVE_DECL_VSNPRINTF=0
  40   fi
  41 ])
  42
  43 AC_DEFUN([gl_REPLACE_VSNPRINTF],
  44 [
  45   AC_REQUIRE([gl_STDIO_H_DEFAULTS])
  46   AC_LIBOBJ([vsnprintf])
  47   if test $ac_cv_func_vsnprintf = yes; then
  48     REPLACE_VSNPRINTF=1
  49   fi
  50   gl_PREREQ_VSNPRINTF
  51 ])
  52
  53 # Prerequisites of lib/vsnprintf.c.
  54 AC_DEFUN([gl_PREREQ_VSNPRINTF], [:])