scripts/lib-names.awk

   1 # awk script for soversions.i -> gnu/lib-names.h; see Makeconfig.
   2
   3 $1 != "DEFAULT" { multi = 1 }
   4
   5 #
   6 {
   7   lib = $2;
   8   version = $3;
   9   if ($3 !~ /^[0-9]/) {
  10     soname = $3;
  11     extra = $3;
  12     sub(/\.so.*$/, "", extra);
  13   }
  14   else {
  15     soname = lib ".so." $3;
  16     extra = "";
  17   }
  18   soname = "\"" soname "\"";
  19   lib = toupper(lib);
  20   extra = toupper(extra);
  21   gsub(/-/, "_", lib);
  22   gsub(/-/, "_", extra);
  23   macros[$1 FS lib "_SO"] = soname;
  24   if (extra)
  25     macros[$1 FS extra "_SO"] = soname;
  26 }
  27
  28 END {
  29   print "/* This file is automatically generated.";
  30   print "   It defines macros to allow user program to find the shared";
  31   print "   library files which come as part of GNU libc.  */";
  32   print "#ifndef __GNU_LIB_NAMES_H";
  33   print "#define __GNU_LIB_NAMES_H      1";
  34   print "";
  35
  36   pfx = multi ? "# define " : "#define ";
  37   for (elt in macros) {
  38     split(elt, x);
  39     line = sprintf("%-40s%s", pfx x[2], macros[elt]);
  40     if (x[1] in lines)
  41       lines[x[1]] = lines[x[1]] "\n" line;
  42     else
  43       lines[x[1]] = line;
  44   }
  45
  46   if (multi) {
  47     # Print these in a fixed order so the result is identical
  48     # on both sides of the coin.
  49     if (!("WORDSIZE32" in lines))
  50       lines["WORDSIZE32"] = lines["DEFAULT"];
  51     if (!("WORDSIZE64" in lines))
  52       lines["WORDSIZE64"] = lines["DEFAULT"];
  53     print "#include <bits/wordsize.h>\n";
  54     print "#if __WORDSIZE == 32";
  55     cmd = "LC_ALL=C sort"; print lines["WORDSIZE32"] | cmd; close(cmd);
  56     print "#else"
  57     cmd = "LC_ALL=C sort"; print lines["WORDSIZE64"] | cmd; close(cmd);
  58     print "#endif";
  59   }
  60   else {
  61     cmd = "LC_ALL=C sort"; print lines["DEFAULT"] | cmd; close(cmd);
  62   }
  63
  64   print "";
  65   print "#endif /* gnu/lib-names.h */"
  66 }