[BZ #632]

[thirdparty/glibc.git] / scripts / soversions.awk

# awk script for shlib-versions.v -> soversions.i; see Makeconfig.

BEGIN {
  config = cpu "-" vendor "-" os;
  configs[config] = "DEFAULT";
}

{ thiscf = $1 }

$2 ~ /WORDSIZE[3264]/ {
  if (config ~ thiscf) {
    othercf = $3;
    sub(/@CPU@/, cpu, othercf);
    sub(/@VENDOR@/, vendor, othercf);
    sub(/@OS@/, os, othercf);
    configs[othercf] = $2;
  }
  next;
}

# Obey the first matching DEFAULT line.
$2 == "DEFAULT" {
  if (!matched_default[thiscf]) {
    matched_default[thiscf] = 1;
    $1 = $2 = "";
    default_set[thiscf] = $0;
  }
  next
}

# Collect all lib lines before emitting anything, so DEFAULT
# can be interspersed.
{
  lib = number = $2;
  sub(/=.*$/, "", lib);
  sub(/^.*=/, "", number);
  if ((thiscf FS lib) in numbers) next;
  numbers[thiscf FS lib] = number;
  order[thiscf FS lib] = ++order_n;
  if (NF > 2) {
    $1 = $2 = "";
    versions[thiscf FS lib] = $0
  }
}

END {
  for (elt in numbers) {
    split(elt, x);
    cf = x[1];
    lib = x[2];
    if (default_setname && !(cf in default_set) && config ~ cf)
      default_set[cf] = default_setname;
    set = (elt in versions) ? versions[elt] : default_set[cf];
    line = set ? (lib FS numbers[elt] FS set) : (lib FS numbers[elt]);
    for (c in configs)
      if (c ~ cf) {
	if (!((c FS lib) in lineorder) || order[elt] < lineorder[c FS lib]) {
	  lineorder[c FS lib] = order[elt];
	  lines[c FS lib] = configs[c] FS line;
	}
      }
  }
  for (c in lines) {
    print lines[c]
  }
}