m4/snprintf-posix.m4

   1 # snprintf-posix.m4 serial 7
   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_LONG_DOUBLE])
  12   AC_REQUIRE([gl_PRINTF_DIRECTIVE_A])
  13   AC_REQUIRE([gl_PRINTF_DIRECTIVE_F])
  14   AC_REQUIRE([gl_PRINTF_DIRECTIVE_N])
  15   AC_REQUIRE([gl_PRINTF_POSITIONS])
  16   AC_REQUIRE([gl_PRINTF_FLAG_GROUPING])
  17   AC_REQUIRE([gl_PRINTF_FLAG_ZERO])
  18   gl_cv_func_snprintf_posix=no
  19   AC_CHECK_FUNCS([snprintf])
  20   if test $ac_cv_func_snprintf = yes; then
  21     gl_SNPRINTF_TRUNCATION_C99
  22     gl_SNPRINTF_RETVAL_C99
  23     gl_SNPRINTF_DIRECTIVE_N
  24     gl_VSNPRINTF_ZEROSIZE_C99
  25     case "$gl_cv_func_printf_sizes_c99" in
  26       *yes)
  27         case "$gl_cv_func_printf_long_double" in
  28           *yes)
  29             case "$gl_cv_func_printf_directive_a" in
  30               *yes)
  31                 case "$gl_cv_func_printf_directive_f" in
  32                   *yes)
  33                     case "$gl_cv_func_printf_directive_n" in
  34                       *yes)
  35                         case "$gl_cv_func_printf_positions" in
  36                           *yes)
  37                             case "$gl_cv_func_printf_flag_grouping" in
  38                               *yes)
  39                                 case "$gl_cv_func_printf_flag_zero" in
  40                                   *yes)
  41                                     case "$gl_cv_func_snprintf_truncation_c99" in
  42                                       *yes)
  43                                         case "$gl_cv_func_snprintf_retval_c99" in
  44                                           *yes)
  45                                             case "$gl_cv_func_snprintf_directive_n" in
  46                                               *yes)
  47                                                 case "$gl_cv_func_vsnprintf_zerosize_c99" in
  48                                                   *yes)
  49                                                     # snprintf exists and is
  50                                                     # already POSIX compliant.
  51                                                     gl_cv_func_snprintf_posix=yes
  52                                                     ;;
  53                                                 esac
  54                                                 ;;
  55                                             esac
  56                                             ;;
  57                                         esac
  58                                         ;;
  59                                     esac
  60                                     ;;
  61                                 esac
  62                                 ;;
  63                             esac
  64                             ;;
  65                         esac
  66                         ;;
  67                     esac
  68                     ;;
  69                 esac
  70                 ;;
  71             esac
  72             ;;
  73         esac
  74         ;;
  75     esac
  76   fi
  77   if test $gl_cv_func_snprintf_posix = no; then
  78     gl_PREREQ_VASNPRINTF_LONG_DOUBLE
  79     gl_PREREQ_VASNPRINTF_DIRECTIVE_A
  80     gl_PREREQ_VASNPRINTF_DIRECTIVE_F
  81     gl_PREREQ_VASNPRINTF_FLAG_GROUPING
  82     gl_PREREQ_VASNPRINTF_FLAG_ZERO
  83     gl_REPLACE_VASNPRINTF
  84     gl_REPLACE_SNPRINTF
  85   fi
  86 ])