m4/snprintf-posix.m4

   1 # snprintf-posix.m4 serial 5
   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_SNPRINTF_POSIX],
   8 [
   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   AC_REQUIRE([gl_PRINTF_FLAG_GROUPING])
  16   gl_cv_func_snprintf_posix=no
  17   AC_CHECK_FUNCS([snprintf])
  18   if test $ac_cv_func_snprintf = yes; then
  19     gl_SNPRINTF_TRUNCATION_C99
  20     gl_SNPRINTF_RETVAL_C99
  21     gl_SNPRINTF_DIRECTIVE_N
  22     gl_VSNPRINTF_ZEROSIZE_C99
  23     case "$gl_cv_func_printf_sizes_c99" in
  24       *yes)
  25         case "$gl_cv_func_printf_directive_a" in
  26           *yes)
  27             case "$gl_cv_func_printf_directive_f" in
  28               *yes)
  29                 case "$gl_cv_func_printf_directive_n" in
  30                   *yes)
  31                     case "$gl_cv_func_printf_positions" in
  32                       *yes)
  33                         case "$gl_cv_func_printf_flag_grouping" in
  34                           *yes)
  35                             case "$gl_cv_func_snprintf_truncation_c99" in
  36                               *yes)
  37                                 case "$gl_cv_func_snprintf_retval_c99" in
  38                                   *yes)
  39                                     case "$gl_cv_func_snprintf_directive_n" in
  40                                       *yes)
  41                                         case "$gl_cv_func_vsnprintf_zerosize_c99" in
  42                                           *yes)
  43                                             # snprintf exists and is already
  44                                             # POSIX compliant.
  45                                             gl_cv_func_snprintf_posix=yes
  46                                             ;;
  47                                         esac
  48                                         ;;
  49                                     esac
  50                                     ;;
  51                                 esac
  52                                 ;;
  53                             esac
  54                             ;;
  55                         esac
  56                         ;;
  57                     esac
  58                     ;;
  59                 esac
  60                 ;;
  61             esac
  62             ;;
  63         esac
  64         ;;
  65     esac
  66   fi
  67   if test $gl_cv_func_snprintf_posix = no; then
  68     gl_PREREQ_VASNPRINTF_DIRECTIVE_A
  69     gl_PREREQ_VASNPRINTF_DIRECTIVE_F
  70     gl_PREREQ_VASNPRINTF_FLAG_GROUPING
  71     gl_REPLACE_VASNPRINTF
  72     gl_REPLACE_SNPRINTF
  73   fi
  74 ])