[BZ #632]

2005-02-10  Roland McGrath  <roland@redhat.com>
	[BZ #632]
	* scripts/soversions.awk: Expect cpu, vendor, os as separate variables
	from command line.
	Grok shlib-versions lines with WORDSIZE* in second column.
	Add new leading column to output, DEFAULT for existing output lines.
	Also emit lines with WORDSIZE* for alternate configurations.
	* Makeconfig ($(common-objpfx)soversions.i): Pass those variables.
	($(common-objpfx)soversions.mk): Grok new column, use only DEFAULT.
	($(common-objpfx)gnu/lib-names.stmp): Depend on soversions.i instead
	of soversions.mk; replace inline shell script with use of ...
	* scripts/lib-names.awk: New file.  If input has non-DEFAULT lines,
	emit multiple sets of macros under #if.
	* shlib-versions (x86_64-.*-.*): Add WORDSIZE32 line mapping to i686.
	(s390x-.*-.*): Likewise for s390.
	(powerpc64-.*-.*): Likewise for powerpc.
	(sparc64-.*-.*): Likewise for sparc.

2 files changed, 111 insertions, 15 deletions

diff --git a/scripts/lib-names.awk b/scripts/lib-names.awk
new file mode 100644
index 0000000000..31f248f47d
--- /dev/null
+++ b/scripts/lib-names.awk
@@ -0,0 +1,68 @@
+# 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;
+  }
+
+  default_lines = lines["DEFAULT"];
+  delete lines["DEFAULT"];
+  if (multi) {
+    print "#include <bits/wordsize.h>\n";
+    pfx = "#if";
+    for (kind in lines) {
+      l = lines[kind];
+      sub(/WORDSIZE/, "", kind);
+      print pfx, "__WORDSIZE", "==", kind;
+      cmd = "LC_ALL=C sort"; print l | cmd; close(cmd);
+      pfx = "#elif";
+    }
+    print "#else";
+    cmd = "LC_ALL=C sort"; print default_lines | cmd; close(cmd);
+    print "#endif";
+  }
+  else {
+    cmd = "LC_ALL=C sort"; print default_lines | cmd; close(cmd);
+  }
+
+  print "";
+  print "#endif	/* gnu/lib-names.h */"
+}
diff --git a/scripts/soversions.awk b/scripts/soversions.awk
index 6207088514..3d50c4deeb 100644
--- a/scripts/soversions.awk
+++ b/scripts/soversions.awk
@@ -1,14 +1,29 @@
-# awk script for shlib-versions.v.i -> soversions.i; see Makeconfig.
+# awk script for shlib-versions.v -> soversions.i; see Makeconfig.
 
-# Only lines matching `config' (set with -v) are relevant to us.
-config !~ $1 { next }
+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) {
-    matched_default = 1;
+  if (!matched_default[thiscf]) {
+    matched_default[thiscf] = 1;
     $1 = $2 = "";
-    default_setname = $0;
+    default_set[thiscf] = $0;
   }
   next
 }
@@ -19,20 +34,33 @@ $2 == "DEFAULT" {
   lib = number = $2;
   sub(/=.*$/, "", lib);
   sub(/^.*=/, "", number);
-  if (lib in numbers) next;
-  numbers[lib] = 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[lib] = $0
+    versions[thiscf FS lib] = $0
   }
 }
 
 END {
-  for (lib in numbers) {
-    set = (lib in versions) ? versions[lib] : default_setname;
-    if (set)
-      print lib, numbers[lib], set;
-    else
-      print lib, numbers[lib];
+  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]
   }
 }