scripts/soversions.awk

   1 # awk script for shlib-versions.v -> soversions.i; see Makeconfig.
   2
   3 BEGIN {
   4   config = cpu "-" vendor "-" os;
   5   configs[config] = "DEFAULT";
   6 }
   7
   8 { thiscf = $1 }
   9
  10 $2 ~ /WORDSIZE[3264]/ {
  11   if ((config ~ thiscf) && !othercf) {
  12     othercf = $3;
  13     sub(/@CPU@/, cpu, othercf);
  14     sub(/@VENDOR@/, vendor, othercf);
  15     sub(/@OS@/, os, othercf);
  16     configs[othercf] = $2;
  17   }
  18   next;
  19 }
  20
  21 $2 == "ABI" {
  22   if ((config ~ thiscf) && !abiname) {
  23     abiname = $3;
  24     sub(/@CPU@/, cpu, abiname);
  25     sub(/@VENDOR@/, vendor, abiname);
  26     sub(/@OS@/, os, abiname);
  27   }
  28   next;
  29 }
  30
  31 # Obey the first matching DEFAULT line.
  32 $2 == "DEFAULT" {
  33   $1 = $2 = "";
  34   default_set[++ndefault_set] = thiscf "\n" $0;
  35   next
  36 }
  37
  38 # Collect all lib lines before emitting anything, so DEFAULT
  39 # can be interspersed.
  40 {
  41   lib = number = $2;
  42   sub(/=.*$/, "", lib);
  43   sub(/^.*=/, "", number);
  44   if ((thiscf FS lib) in numbers) next;
  45   numbers[thiscf FS lib] = number;
  46   order[thiscf FS lib] = ++order_n;
  47   if (NF > 2) {
  48     $1 = $2 = "";
  49     versions[thiscf FS lib] = $0
  50   }
  51 }
  52
  53 END {
  54   for (elt in numbers) {
  55     split(elt, x);
  56     cf = x[1];
  57     lib = x[2];
  58     for (c in configs)
  59       if (c ~ cf) {
  60         if (elt in versions)
  61           set = versions[elt];
  62         else {
  63           set = (c == config) ? default_setname : "";
  64           for (i = 1; i <= ndefault_set; ++i) {
  65             split(default_set[i], x, "\n");
  66             if (c ~ x[1]) {
  67               set = x[2];
  68               break;
  69             }
  70           }
  71         }
  72         line = set ? (lib FS numbers[elt] FS set) : (lib FS numbers[elt]);
  73         if (!((c FS lib) in lineorder) || order[elt] < lineorder[c FS lib]) {
  74           lineorder[c FS lib] = order[elt];
  75           lines[c FS lib] = configs[c] FS line;
  76         }
  77       }
  78   }
  79   if (abiname) {
  80     print "ABI", abiname
  81   }
  82   for (c in lines) {
  83     print lines[c]
  84   }
  85 }