scripts/abi-versions.awk

   1 # Script to generate <abi-versions.h> header file from Versions.all list.
   2 # See include/shlib-compat.h comments for explanation.
   3
   4 # This script expects the following variables to be defined:
   5 # oldest_abi            the oldest ABI supported
   6
   7 BEGIN {
   8   print "/* This file is automatically generated by abi-versions.awk.";
   9   print "   It defines symbols used by shlib-compat.h, which see.  */";
  10   print "\n#ifndef _ABI_VERSIONS_H\n#define _ABI_VERSIONS_H";
  11 }
  12
  13 NF == 2 && $2 == "{" {
  14   thislib = $1;
  15   gsub(/[^A-Za-z0-9_    ]/, "_"); libid = $1;
  16   printf "\n/* start %s */\n", thislib;
  17   n = 0;
  18   start = 0;
  19   next;
  20 }
  21 $1 == "}" {
  22   printf "/* end %s */\n", thislib;
  23   next;
  24 }
  25
  26 $2 == "=" {
  27   old = $1; new = $3;
  28   gsub(/[^A-Za-z0-9_    ]/, "_");
  29   oldid = $1; newid = $3;
  30
  31   printf "#define ABI_%s_%s\tABI_%s_%s\n", libid, oldid, libid, newid;
  32   printf "#define VERSION_%s_%s\t%s\n", libid, oldid, new;
  33
  34   if ("GLIBC_" oldest_abi == old)
  35     oldest_abi = "default";
  36   next;
  37 }
  38
  39 {
  40   vers = $1;
  41   gsub(/[^A-Za-z0-9_    ]/, "_");
  42   versid = $1;
  43
  44   printf "#define ABI_%s_%s\t%d\t/* support %s */\n", libid, versid, ++n, vers;
  45   printf "#define VERSION_%s_%s\t%s\n", libid, versid, vers;
  46   if ("GLIBC_" oldest_abi == vers)
  47     start = 1;
  48   if (start == 0 && oldest_abi != "default")
  49     --n;
  50   next;
  51 }
  52
  53 END {
  54   print "\n#endif /* abi-versions.h */";
  55 }