versions.awk

   1 # Combine version map fragments into version files for the generated
   2 # shared object.
   3 # (C) Copyright 1998 Free Software Foundation, Inc.
   4 # Written by Ulrich Drepper <drepper@cygnus.com>, 1998.
   5
   6 # Read definitions for the versions.
   7 BEGIN {
   8   nlibs=0;
   9   while (getline < "Versions.def") {
  10     if (/^[a-zA-Z_]+ {/) {
  11       libs[$1] = 1;
  12       curlib = $1;
  13       while (getline < "Versions.def" && ! /^}/) {
  14         if (NF > 1) {
  15           versions[$1] = 1;
  16           derived[curlib, $1] = (" " $2);
  17           for (n = 3; n <= NF; ++n) {
  18             derived[curlib, $1] = sprintf("%s, %s", derived[curlib, $1], $n);
  19           }
  20         } else {
  21           versions[$1] = 1;
  22         }
  23       }
  24     }
  25   }
  26   close("Versions.def");
  27
  28   tmpfile = (buildroot "/Versions.tmp");
  29   sort = ("sort -n >" tmpfile);
  30 }
  31
  32 # Remove comment lines.
  33 /^ *#/ {
  34   next;
  35 }
  36
  37 # This matches the beginning of the version information for a new library.
  38 /^[a-zA-Z_]+/ {
  39   actlib = $1;
  40   if (libs[$1] != 1) {
  41     printf("no versions defined for %s\n", $1);
  42     exit 1;
  43   }
  44   next;
  45 }
  46
  47 # This matches the beginning of a new version for the current library.
  48 /^  [A-Za-z_]/ {
  49   actver = $1;
  50   if (versions[$1] != 1) {
  51     printf("version %s not defined\n", $1);
  52     exit 1;
  53   }
  54   next;
  55 }
  56
  57 # This matches lines with names to be added to the current version in the
  58 # current library.  This is the only place where we print something to
  59 # the intermediate file.
  60 /^   / {
  61   printf("%s %s %s\n", actlib, actver, $0) | sort;
  62 }
  63
  64
  65 function closeversion(name) {
  66   if (firstinfile) {
  67     printf("  local:\n    *;\n") > outfile;
  68     firstinfile = 0;
  69   }
  70   printf("}%s;\n", derived[oldlib, name]) > outfile;
  71 }
  72
  73 # Now print the accumulated information.
  74 END {
  75   close(sort);
  76   oldlib="";
  77   oldver="";
  78   while(getline < tmpfile) {
  79     if ($1 != oldlib) {
  80       if (oldlib != "") {
  81         closeversion(oldver);
  82         oldver = "";
  83         close(outfile);
  84       }
  85       oldlib = $1;
  86       outfile = (buildroot oldlib ".map");
  87       firstinfile = 1;
  88     }
  89     if ($2 != oldver) {
  90       if (oldver != "") {
  91         closeversion(oldver);
  92       }
  93       printf("%s {\n  global:\n", $2) > outfile;
  94       oldver = $2;
  95     }
  96     printf("   ") > outfile;
  97     for (n = 3; n <= NF; ++n) {
  98       printf(" %s", $n) > outfile;
  99     }
 100     printf("\n") > outfile;
 101   }
 102   closeversion(oldver);
 103   close(outfile);
 104   rm tmpfile;
 105 }