1 files changed, 66 insertions, 0 deletions
diff --git a/scripts/lib-names.awk b/scripts/lib-names.awk
new file mode 100644
index 0000000000..77e6668515
--- /dev/null
+++ b/scripts/lib-names.awk
@@ -0,0 +1,66 @@
+# awk script for soversions.i -> gnu/lib-names.h; see Makeconfig.
+
+$1 != "DEFAULT" { multi = 1 }
+
+#
+{
+  lib = $2;
+  version = $3;
+  if ($3 !~ /^[0-9]/) {
+    soname = $3;
+    extra = $3;
+    sub(/\.so.*$/, "", extra);
+  }
+  else {
+    soname = lib ".so." $3;
+    extra = "";
+  }
+  soname = "\"" soname "\"";
+  lib = toupper(lib);
+  extra = toupper(extra);
+  gsub(/-/, "_", lib);
+  gsub(/-/, "_", extra);
+  macros[$1 FS lib "_SO"] = soname;
+  if (extra)
+    macros[$1 FS extra "_SO"] = soname;
+}
+
+END {
+  print "/* This file is automatically generated.";
+  print "   It defines macros to allow user program to find the shared";
+  print "   library files which come as part of GNU libc.  */";
+  print "#ifndef __GNU_LIB_NAMES_H";
+  print "#define __GNU_LIB_NAMES_H	1";
+  print "";
+
+  pfx = multi ? "# define " : "#define ";
+  for (elt in macros) {
+    split(elt, x);
+    line = sprintf("%-40s%s", pfx x[2], macros[elt]);
+    if (x[1] in lines)
+      lines[x[1]] = lines[x[1]] "\n" line;
+    else
+      lines[x[1]] = line;
+  }
+
+  if (multi) {
+    # Print these in a fixed order so the result is identical
+    # on both sides of the coin.
+    if (!("WORDSIZE32" in lines))
+      lines["WORDSIZE32"] = lines["DEFAULT"];
+    if (!("WORDSIZE64" in lines))
+      lines["WORDSIZE64"] = lines["DEFAULT"];
+    print "#include <bits/wordsize.h>\n";
+    print "#if __WORDSIZE == 32";
+    cmd = "LC_ALL=C sort"; print lines["WORDSIZE32"] | cmd; close(cmd);
+    print "#else"
+    cmd = "LC_ALL=C sort"; print lines["WORDSIZE64"] | cmd; close(cmd);
+    print "#endif";
+  }
+  else {
+    cmd = "LC_ALL=C sort"; print lines["DEFAULT"] | cmd; close(cmd);
+  }
+
+  print "";
+  print "#endif	/* gnu/lib-names.h */"
+}