m4/vsnprintf-posix.m4

   1 # vsnprintf-posix.m4 serial 10
   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.
   6
   7 AC_DEFUN([gl_FUNC_VSNPRINTF_POSIX],
   8 [
   9   AC_REQUIRE([gl_EOVERFLOW])
  10   AC_REQUIRE([gl_PRINTF_SIZES_C99])
  11   AC_REQUIRE([gl_PRINTF_LONG_DOUBLE])
  12   AC_REQUIRE([gl_PRINTF_INFINITE])
  13   AC_REQUIRE([gl_PRINTF_INFINITE_LONG_DOUBLE])
  14   AC_REQUIRE([gl_PRINTF_DIRECTIVE_A])
  15   AC_REQUIRE([gl_PRINTF_DIRECTIVE_F])
  16   AC_REQUIRE([gl_PRINTF_DIRECTIVE_N])
  17   AC_REQUIRE([gl_PRINTF_POSITIONS])
  18   AC_REQUIRE([gl_PRINTF_FLAG_GROUPING])
  19   AC_REQUIRE([gl_PRINTF_FLAG_ZERO])
  20   AC_REQUIRE([gl_PRINTF_PRECISION])
  21   AC_REQUIRE([gl_PRINTF_ENOMEM])
  22   gl_cv_func_vsnprintf_posix=no
  23   AC_CHECK_FUNCS([vsnprintf])
  24   if test $ac_cv_func_vsnprintf = yes; then
  25     dnl Assume that if vsnprintf() exists, snprintf() also exists.
  26     gl_SNPRINTF_TRUNCATION_C99
  27     gl_SNPRINTF_RETVAL_C99
  28     gl_SNPRINTF_DIRECTIVE_N
  29     gl_VSNPRINTF_ZEROSIZE_C99
  30     case "$gl_cv_func_printf_sizes_c99" in
  31       *yes)
  32         case "$gl_cv_func_printf_long_double" in
  33           *yes)
  34             case "$gl_cv_func_printf_infinite" in
  35               *yes)
  36                 case "$gl_cv_func_printf_infinite_long_double" in
  37                   *yes)
  38                     case "$gl_cv_func_printf_directive_a" in
  39                       *yes)
  40                         case "$gl_cv_func_printf_directive_f" in
  41                           *yes)
  42                             case "$gl_cv_func_printf_directive_n" in
  43                               *yes)
  44                                 case "$gl_cv_func_printf_positions" in
  45                                   *yes)
  46                                     case "$gl_cv_func_printf_flag_grouping" in
  47                                       *yes)
  48                                         case "$gl_cv_func_printf_flag_zero" in
  49                                           *yes)
  50                                             case "$gl_cv_func_printf_precision" in
  51                                               *yes)
  52                                                 case "$gl_cv_func_printf_enomem" in
  53                                                   *yes)
  54                                                     case "$gl_cv_func_snprintf_truncation_c99" in
  55                                                       *yes)
  56                                                         case "$gl_cv_func_snprintf_retval_c99" in
  57                                                           *yes)
  58                                                             case "$gl_cv_func_snprintf_directive_n" in
  59                                                               *yes)
  60                                                                 case "$gl_cv_func_vsnprintf_zerosize_c99" in
  61                                                                   *yes)
  62                                                                     # vsnprintf exists and is
  63                                                                     # already POSIX compliant.
  64                                                                     gl_cv_func_vsnprintf_posix=yes
  65                                                                     ;;
  66                                                                 esac
  67                                                                 ;;
  68                                                             esac
  69                                                             ;;
  70                                                         esac
  71                                                         ;;
  72                                                     esac
  73                                                     ;;
  74                                                 esac
  75                                                 ;;
  76                                             esac
  77                                             ;;
  78                                         esac
  79                                         ;;
  80                                     esac
  81                                     ;;
  82                                 esac
  83                                 ;;
  84                             esac
  85                             ;;
  86                         esac
  87                         ;;
  88                     esac
  89                     ;;
  90                 esac
  91                 ;;
  92             esac
  93             ;;
  94         esac
  95         ;;
  96     esac
  97   fi
  98   if test $gl_cv_func_vsnprintf_posix = no; then
  99     gl_PREREQ_VASNPRINTF_LONG_DOUBLE
 100     gl_PREREQ_VASNPRINTF_INFINITE_DOUBLE
 101     gl_PREREQ_VASNPRINTF_INFINITE_LONG_DOUBLE
 102     gl_PREREQ_VASNPRINTF_DIRECTIVE_A
 103     gl_PREREQ_VASNPRINTF_DIRECTIVE_F
 104     gl_PREREQ_VASNPRINTF_FLAG_GROUPING
 105     gl_PREREQ_VASNPRINTF_FLAG_ZERO
 106     gl_PREREQ_VASNPRINTF_PRECISION
 107     gl_PREREQ_VASNPRINTF_ENOMEM
 108     gl_REPLACE_VASNPRINTF
 109     gl_REPLACE_VSNPRINTF
 110   fi
 111 ])