Prepare for radical source tree reorganization.zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 898 insertions, 0 deletions

diff --git a/REORG.TODO/conform/conformtest.pl b/REORG.TODO/conform/conformtest.pl
new file mode 100644
index 0000000000..cb500f0e76
--- /dev/null
+++ b/REORG.TODO/conform/conformtest.pl
@@ -0,0 +1,898 @@
+#!/usr/bin/perl
+
+use GlibcConform;
+use Getopt::Long;
+use POSIX;
+
+$standard = "XOPEN2K8";
+$CC = "gcc";
+$tmpdir = "/tmp";
+$cross = "";
+$xfail_str = "";
+GetOptions ('headers=s' => \@headers, 'standard=s' => \$standard,
+	    'flags=s' => \$flags, 'cc=s' => \$CC, 'tmpdir=s' => \$tmpdir,
+	    'cross' => \$cross, 'xfail=s' => \$xfail_str);
+@headers = split(/,/,join(',',@headers));
+
+# List of the headers we are testing.
+if (@headers == ()) {
+  @headers = ("wordexp.h", "wctype.h", "wchar.h", "varargs.h", "utmpx.h",
+	      "utime.h", "unistd.h", "ulimit.h", "ucontext.h", "uchar.h",
+	      "time.h", "tgmath.h", "termios.h", "tar.h", "sys/wait.h",
+	      "sys/utsname.h", "sys/un.h", "sys/uio.h", "sys/types.h",
+	      "sys/times.h", "sys/timeb.h", "sys/time.h", "sys/statvfs.h",
+	      "sys/stat.h", "sys/socket.h", "sys/shm.h", "sys/sem.h",
+	      "sys/select.h", "sys/resource.h", "sys/msg.h", "sys/mman.h",
+	      "sys/ipc.h", "syslog.h", "stropts.h", "strings.h", "string.h",
+	      "stdnoreturn.h", "stdlib.h", "stdio.h", "stdint.h", "stddef.h",
+	      "stdbool.h", "stdarg.h", "stdalign.h", "spawn.h", "signal.h",
+	      "setjmp.h", "semaphore.h", "search.h", "sched.h", "regex.h",
+	      "pwd.h", "pthread.h", "poll.h", "nl_types.h", "netinet/tcp.h",
+	      "netinet/in.h", "net/if.h", "netdb.h", "ndbm.h", "mqueue.h",
+	      "monetary.h", "math.h", "locale.h", "libgen.h", "limits.h",
+	      "langinfo.h", "iso646.h", "inttypes.h", "iconv.h", "grp.h",
+	      "glob.h", "ftw.h", "fnmatch.h", "fmtmsg.h", "float.h", "fenv.h",
+	      "fcntl.h", "errno.h", "dlfcn.h", "dirent.h", "ctype.h", "cpio.h",
+	      "complex.h", "assert.h", "arpa/inet.h", "aio.h");
+}
+
+$CFLAGS_namespace = "$flags -fno-builtin $CFLAGS{$standard} -D_ISOMAC";
+$CFLAGS = "$CFLAGS_namespace '-D__attribute__(x)='";
+
+# Check standard name for validity.
+die "unknown standard \"$standard\"" if ($CFLAGS{$standard} eq "");
+
+# if ($standard ne "XOPEN2K8" && $standard ne "POSIX2008") {
+#   # Some headers need a bit more attention.  At least with XPG7
+#   # all headers should be self-contained.
+#   $mustprepend{'inttypes.h'} = "#include <stddef.h>\n";
+#   $mustprepend{'glob.h'} = "#include <sys/types.h>\n";
+#   $mustprepend{'grp.h'} = "#include <sys/types.h>\n";
+#   $mustprepend{'regex.h'} = "#include <sys/types.h>\n";
+#   $mustprepend{'pwd.h'} = "#include <sys/types.h>\n";
+#   $mustprepend{'sched.h'} = "#include <sys/types.h>\n";
+#   $mustprepend{'signal.h'} = "#include <pthread.h>\n#include <sys/types.h>\n";
+#   $mustprepend{'stdio.h'} = "#include <sys/types.h>\n";
+#   $mustprepend{'sys/stat.h'} = "#include <sys/types.h>\n";
+#   $mustprepend{'wchar.h'} = "#include <stdarg.h>\n";
+#   $mustprepend{'wordexp.h'} = "#include <stddef.h>\n";
+# }
+
+# These are the ISO C90 keywords.
+@keywords = ('auto', 'break', 'case', 'char', 'const', 'continue', 'default',
+	     'do', 'double', 'else', 'enum', 'extern', 'float', 'for', 'goto',
+	     'if', 'int', 'long', 'register', 'return',
+	     'short', 'signed', 'sizeof', 'static', 'struct', 'switch',
+	     'typedef', 'union', 'unsigned', 'void', 'volatile', 'while');
+if ($CFLAGS{$standard} =~ /-std=(c99|c1x)/) {
+  push (@keywords, 'inline', 'restrict');
+}
+
+# Make a hash table from this information.
+while ($#keywords >= 0) {
+  $iskeyword{pop (@keywords)} = 1;
+}
+
+$verbose = 1;
+
+$total = 0;
+$skipped = 0;
+$errors = 0;
+$xerrors = 0;
+
+sub note_error {
+  my($xfail) = @_;
+  if ($xfail) {
+    $xerrors++;
+    printf ("Ignoring this failure.\n");
+  } else {
+    $errors++;
+  }
+}
+
+
+sub poorfnmatch {
+  my($pattern, $string) = @_;
+  my($strlen) = length ($string);
+  my($res);
+
+  if (substr ($pattern, 0, 1) eq '*') {
+    my($patlen) = length ($pattern) - 1;
+    $res = ($strlen >= $patlen
+	    && substr ($pattern, -$patlen, $patlen) eq substr ($string, -$patlen, $patlen));
+  } elsif (substr ($pattern, -1, 1) eq '*') {
+    if (substr ($pattern, -2, 1) eq ']') {
+      my($patlen) = index ($pattern, '[');
+      my($range) = substr ($pattern, $patlen + 1, -2);
+      $res = ($strlen > $patlen
+	      && substr ($pattern, 0, $patlen) eq substr ($string, 0, $patlen)
+	      && index ($range, substr ($string, $patlen, 1)) != -1);
+    } else {
+      my($patlen) = length ($pattern) - 1;
+      $res = ($strlen >= $patlen
+	      && substr ($pattern, 0, $patlen) eq substr ($string, 0, $patlen));
+    }
+  } else {
+    $res = $pattern eq $string;
+  }
+  return $res;
+}
+
+
+sub compiletest
+{
+  my($fnamebase, $msg, $errmsg, $skip, $optional, $xfail) = @_;
+  my($result) = $skip;
+  my($printlog) = 0;
+
+  ++$total;
+  printf ("  $msg...");
+
+  if ($skip != 0) {
+    ++$skipped;
+    printf (" SKIP\n");
+  } else {
+    $ret = system "$CC $CFLAGS -c $fnamebase.c -o $fnamebase.o > $fnamebase.out 2>&1";
+    if ($ret != 0) {
+      if ($optional != 0) {
+	printf (" $errmsg\n");
+	$result = 1;
+      } else {
+	printf (" FAIL\n");
+	if ($verbose != 0) {
+	  printf ("    $errmsg  Compiler message:\n");
+	  $printlog = 1;
+	}
+	note_error($xfail);
+	$result = 1;
+      }
+    } else {
+      printf (" OK\n");
+      if ($verbose > 1 && -s "$fnamebase.out") {
+	# We print all warnings issued.
+	$printlog = 1;
+      }
+    }
+    if ($printlog != 0) {
+      printf ("    " . "-" x 71 . "\n");
+      open (MESSAGE, "< $fnamebase.out");
+      while (<MESSAGE>) {
+	printf ("    %s", $_);
+      }
+      close (MESSAGE);
+      printf ("    " . "-" x 71 . "\n");
+    }
+  }
+  unlink "$fnamebase.c";
+  unlink "$fnamebase.o";
+  unlink "$fnamebase.out";
+
+  $result;
+}
+
+
+sub runtest
+{
+  my($fnamebase, $msg, $errmsg, $skip, $xfail) = @_;
+  my($result) = $skip;
+  my($printlog) = 0;
+
+  ++$total;
+  printf ("  $msg...");
+
+  if ($skip != 0) {
+    ++$skipped;
+    printf (" SKIP\n");
+  } else {
+    $ret = system "$CC $CFLAGS -o $fnamebase $fnamebase.c > $fnamebase.out 2>&1";
+    if ($ret != 0) {
+      printf (" FAIL\n");
+      if ($verbose != 0) {
+	printf ("    $errmsg  Compiler message:\n");
+	$printlog = 1;
+      }
+      note_error($xfail);
+      $result = 1;
+    } elsif ($cross) {
+      printf (" SKIP\n");
+    } else {
+      # Now run the program.  If the exit code is not zero something is wrong.
+      $result = system "$fnamebase > $fnamebase.out2 2>&1";
+      if ($result == 0) {
+	printf (" OK\n");
+	if ($verbose > 1 && -s "$fnamebase.out") {
+	  # We print all warnings issued.
+	  $printlog = 1;
+	  system "cat $fnamebase.out2 >> $fnamebase.out";
+	}
+      } else {
+	printf (" FAIL\n");
+	note_error($xfail);
+	$printlog = 1;
+	unlink "$fnamebase.out";
+	rename "$fnamebase.out2", "$fnamebase.out";
+      }
+    }
+    if ($printlog != 0) {
+      printf ("    " . "-" x 71 . "\n");
+      open (MESSAGE, "< $fnamebase.out");
+      while (<MESSAGE>) {
+	printf ("    %s", $_);
+      }
+      close (MESSAGE);
+      printf ("    " . "-" x 71 . "\n");
+    }
+  }
+  unlink "$fnamebase";
+  unlink "$fnamebase.c";
+  unlink "$fnamebase.o";
+  unlink "$fnamebase.out";
+  unlink "$fnamebase.out2";
+
+  $result;
+}
+
+
+sub newtoken {
+  my($token, @allow) = @_;
+  my($idx);
+
+  return if ($token =~ /^[0-9_]/ || $iskeyword{$token});
+
+  for ($idx = 0; $idx <= $#allow; ++$idx) {
+    return if (poorfnmatch ($allow[$idx], $token));
+  }
+
+  $errors{$token} = 1;
+}
+
+
+sub removetoken {
+  my($token) = @_;
+  my($idx);
+
+  return if ($token =~ /^[0-9_]/ || $iskeyword{$token});
+
+  if (exists $errors{$token}) {
+    undef $errors{$token};
+  }
+}
+
+
+sub checknamespace {
+  my($h, $fnamebase, @allow) = @_;
+
+  ++$total;
+
+  # Generate a program to get the contents of this header.
+  open (TESTFILE, ">$fnamebase.c");
+  print TESTFILE "#include <$h>\n";
+  close (TESTFILE);
+
+  undef %errors;
+  open (CONTENT, "$CC $CFLAGS_namespace -E $fnamebase.c -P -Wp,-dN | sed -e '/^# [1-9]/d' -e '/^[[:space:]]*\$/d' |");
+  loop: while (<CONTENT>) {
+    chop;
+    if (/^#define (.*)/) {
+      newtoken ($1, @allow);
+    } elsif (/^#undef (.*)/) {
+      removetoken ($1);
+    } else {
+      # We have to tokenize the line.
+      my($str) = $_;
+
+      $str =~ s/"[^"]*"//g;
+      foreach $token (split(/[^a-zA-Z0-9_]/, $str)) {
+	if ($token ne "") {
+	  newtoken ($token, @allow);
+	}
+      }
+    }
+  }
+  close (CONTENT);
+  unlink "$fnamebase.c";
+  $realerror = 0;
+  if ($#errors != 0) {
+    # Sort the output list so it's easier to compare results with diff.
+    foreach $f (sort keys(%errors)) {
+      if ($errors{$f} == 1) {
+	if ($realerror == 0) {
+	  printf ("FAIL\n    " . "-" x 72 . "\n");
+	  $realerror = 1;
+	  ++$errors;
+	}
+	printf ("    Namespace violation: \"%s\"\n", $f);
+      }
+    }
+    printf ("    " . "-" x 72 . "\n") if ($realerror != 0);
+  }
+
+  if ($realerror == 0) {
+    printf ("OK\n");
+  }
+}
+
+
+while ($#headers >= 0) {
+  my($h) = pop (@headers);
+  my($hf) = $h;
+  $hf =~ s|/|-|;
+  my($fnamebase) = "$tmpdir/$hf-test";
+  my($missing) = 1;
+  my(@allow) = ();
+  my(@allowheader) = ();
+  my(%seenheader) = ();
+  my($prepend) = $mustprepend{$h};
+  my($test_exist) = 1;
+
+  printf ("Testing <$h>\n");
+  printf ("----------" . "-" x length ($h) . "\n");
+
+  open (CONTROL, "$CC -E -D$standard -std=c99 -x c data/$h-data |");
+  control: while (<CONTROL>) {
+    chop;
+    next control if (/^#/);
+    next control if (/^[	]*$/);
+
+    if ($test_exist) {
+      $test_exist = 0;
+      # Generate a program to test for the availability of this header.
+      open (TESTFILE, ">$fnamebase.c");
+      print TESTFILE "$prepend";
+      print TESTFILE "#include <$h>\n";
+      close (TESTFILE);
+
+      $missing = compiletest ($fnamebase, "Checking whether <$h> is available",
+			      "Header <$h> not available", 0, 0, 0);
+      printf ("\n");
+      last control if ($missing);
+    }
+
+    my($xfail) = 0;
+    if (/^xfail-/) {
+      s/^xfail-//;
+      $xfail = 1;
+    } elsif (/^xfail\[([^\]]*)\]-/) {
+      my($xfail_cond) = $1;
+      s/^xfail\[([^\]]*)\]-//;
+      # "xfail[cond]-" or "xfail[cond1|cond2|...]-" means a failure of
+      # the test is allowed if any of the listed conditions are in the
+      # --xfail command-line option argument.
+      if ($xfail_str =~ /\b($xfail_cond)\b/) {
+	$xfail = 1;
+      }
+    }
+    my($optional) = 0;
+    if (/^optional-/) {
+      s/^optional-//;
+      $optional = 1;
+    }
+    if (/^element *({([^}]*)}|([^{ ]*)) *({([^}]*)}|([^{ ]*)) *([A-Za-z0-9_]*) *(.*)/) {
+      my($struct) = "$2$3";
+      my($type) = "$5$6";
+      my($member) = "$7";
+      my($rest) = "$8";
+      my($res) = $missing;
+
+      # Remember that this name is allowed.
+      push @allow, $member;
+
+      # Generate a program to test for the availability of this member.
+      open (TESTFILE, ">$fnamebase.c");
+      print TESTFILE "$prepend";
+      print TESTFILE "#include <$h>\n";
+      print TESTFILE "$struct a;\n";
+      print TESTFILE "$struct b;\n";
+      print TESTFILE "extern void xyzzy (__typeof__ (&b.$member), __typeof__ (&a.$member), unsigned);\n";
+      print TESTFILE "void foobarbaz (void) {\n";
+      print TESTFILE "  xyzzy (&a.$member, &b.$member, sizeof (a.$member));\n";
+      print TESTFILE "}\n";
+      close (TESTFILE);
+
+      $res = compiletest ($fnamebase, "Testing for member $member",
+			  ($optional
+			   ? "NOT AVAILABLE."
+			   : "Member \"$member\" not available."), $res,
+			  $optional, $xfail);
+
+      if ($res == 0 || $missing != 0 || !$optional) {
+	# Test the types of the members.
+	open (TESTFILE, ">$fnamebase.c");
+	print TESTFILE "$prepend";
+	print TESTFILE "#include <$h>\n";
+	print TESTFILE "$struct a;\n";
+	print TESTFILE "extern $type b$rest;\n";
+	print TESTFILE "extern __typeof__ (a.$member) b;\n";
+	close (TESTFILE);
+
+	compiletest ($fnamebase, "Testing for type of member $member",
+		     "Member \"$member\" does not have the correct type.",
+		     $res, 0, $xfail);
+      }
+    } elsif (/^(macro|constant|macro-constant|macro-int-constant) +([a-zA-Z0-9_]*) *(?:{([^}]*)} *)?(?:([>=<!]+) ([A-Za-z0-9_\\'-]*))?/) {
+      my($symbol_type) = $1;
+      my($symbol) = $2;
+      my($type) = $3;
+      my($op) = $4;
+      my($value) = $5;
+      my($res) = $missing;
+      my($mres) = $missing;
+      my($cres) = $missing;
+
+      # Remember that this name is allowed.
+      push @allow, $symbol;
+
+      if ($symbol_type =~ /macro/) {
+	# Generate a program to test for availability of this macro.
+	open (TESTFILE, ">$fnamebase.c");
+	print TESTFILE "$prepend";
+	print TESTFILE "#include <$h>\n";
+	print TESTFILE "#ifndef $symbol\n";
+	print TESTFILE "# error \"Macro $symbol not defined\"\n";
+	print TESTFILE "#endif\n";
+	close (TESTFILE);
+
+	$mres = compiletest ($fnamebase, "Test availability of macro $symbol",
+			     ($optional
+			      ? "NOT PRESENT"
+			      : "Macro \"$symbol\" is not available."), $res,
+			     $optional, $xfail);
+      }
+
+      if ($symbol_type =~ /constant/) {
+	# Generate a program to test for the availability of this constant.
+	open (TESTFILE, ">$fnamebase.c");
+	print TESTFILE "$prepend";
+	print TESTFILE "#include <$h>\n";
+	print TESTFILE "__typeof__ ($symbol) a = $symbol;\n";
+	close (TESTFILE);
+
+	$cres = compiletest ($fnamebase, "Testing for constant $symbol",
+			     ($optional
+			      ? "NOT PRESENT"
+			      : "Constant \"$symbol\" not available."), $res,
+			     $optional, $xfail);
+      }
+
+      $res = $res || $mres || $cres;
+
+      if ($symbol_type eq "macro-int-constant" && ($res == 0 || !$optional)) {
+	# Test that the symbol is usable in #if.
+	open (TESTFILE, ">$fnamebase.c");
+	print TESTFILE "$prepend";
+	print TESTFILE "#include <$h>\n";
+	print TESTFILE "#if $symbol < 0\n";
+	print TESTFILE "# define conformtest_negative 1\n";
+	my($s) = "0";
+	for (my $i = 0; $i < 63; $i++) {
+	  print TESTFILE "# if $symbol & (1LL << $i)\n";
+	  print TESTFILE "#  define conformtest_bit_$i 0LL\n";
+	  print TESTFILE "# else\n";
+	  print TESTFILE "#  define conformtest_bit_$i (1LL << $i)\n";
+	  print TESTFILE "# endif\n";
+	  $s .= "|conformtest_bit_$i";
+	}
+	print TESTFILE "# define conformtest_value ~($s)\n";
+	print TESTFILE "#else\n";
+	print TESTFILE "# define conformtest_negative 0\n";
+	$s = "0";
+	for (my $i = 0; $i < 64; $i++) {
+	  print TESTFILE "# if $symbol & (1ULL << $i)\n";
+	  print TESTFILE "#  define conformtest_bit_$i (1ULL << $i)\n";
+	  print TESTFILE "# else\n";
+	  print TESTFILE "#  define conformtest_bit_$i 0ULL\n";
+	  print TESTFILE "# endif\n";
+	  $s .= "|conformtest_bit_$i";
+	}
+	print TESTFILE "# define conformtest_value ($s)\n";
+	print TESTFILE "#endif\n";
+	print TESTFILE "_Static_assert ((($symbol < 0) == conformtest_negative) && ($symbol == conformtest_value), \"value match inside and outside #if\");\n";
+	close (TESTFILE);
+
+	compiletest ($fnamebase, "Testing for #if usability of symbol $symbol",
+		     "Symbol \"$symbol\" not usable in #if.", $res, 0, $xfail);
+      }
+
+      if (defined ($type) && ($res == 0 || !$optional)) {
+	# Test the type of the symbol.
+	open (TESTFILE, ">$fnamebase.c");
+	print TESTFILE "$prepend";
+	print TESTFILE "#include <$h>\n";
+	if ($type =~ /^promoted:/) {
+	  $type =~ s/^promoted://;
+	  print TESTFILE "__typeof__ (($type) 0 + ($type) 0) a;\n";
+	} else {
+	  print TESTFILE "__typeof__ (($type) 0) a;\n";
+	}
+	print TESTFILE "extern __typeof__ ($symbol) a;\n";
+	close (TESTFILE);
+
+	compiletest ($fnamebase, "Testing for type of symbol $symbol",
+		     "Symbol \"$symbol\" does not have the correct type.",
+		     $res, 0, $xfail);
+      }
+
+      if (defined ($op) && ($res == 0 || !$optional)) {
+	# Generate a program to test for the value of this symbol.
+	open (TESTFILE, ">$fnamebase.c");
+	print TESTFILE "$prepend";
+	print TESTFILE "#include <$h>\n";
+	print TESTFILE "_Static_assert ($symbol $op $value, \"value constraint\");\n";
+	close (TESTFILE);
+
+	$res = compiletest ($fnamebase, "Testing for value of symbol $symbol",
+			    "Symbol \"$symbol\" has not the right value.",
+			    $res, 0, $xfail);
+      }
+    } elsif (/^symbol *([a-zA-Z0-9_]*) *([A-Za-z0-9_-]*)?/) {
+      my($symbol) = $1;
+      my($value) = $2;
+      my($res) = $missing;
+
+      # Remember that this name is allowed.
+      push @allow, $symbol;
+
+      # Generate a program to test for the availability of this constant.
+      open (TESTFILE, ">$fnamebase.c");
+      print TESTFILE "$prepend";
+      print TESTFILE "#include <$h>\n";
+      print TESTFILE "void foobarbaz (void) {\n";
+      print TESTFILE "__typeof__ ($symbol) a = $symbol;\n";
+      print TESTFILE "}\n";
+      close (TESTFILE);
+
+      $res = compiletest ($fnamebase, "Testing for symbol $symbol",
+			  "Symbol \"$symbol\" not available.", $res, 0, $xfail);
+
+      if ($value ne "") {
+	# Generate a program to test for the value of this constant.
+	open (TESTFILE, ">$fnamebase.c");
+	print TESTFILE "$prepend";
+	print TESTFILE "#include <$h>\n";
+	print TESTFILE "int main (void) { return $symbol != $value; }\n";
+	close (TESTFILE);
+
+	$res = runtest ($fnamebase, "Testing for value of symbol $symbol",
+			"Symbol \"$symbol\" has not the right value.", $res,
+			$xfail);
+      }
+    } elsif (/^type *({([^}]*)|([a-zA-Z0-9_]*))/) {
+      my($type) = "$2$3";
+      my($maybe_opaque) = 0;
+
+      # Remember that this name is allowed.
+      if ($type =~ /^struct *(.*)/) {
+	push @allow, $1;
+      } elsif ($type =~ /^union *(.*)/) {
+	push @allow, $1;
+      } else {
+	push @allow, $type;
+	$maybe_opaque = 1;
+      }
+
+      # Generate a program to test for the availability of this type.
+      open (TESTFILE, ">$fnamebase.c");
+      print TESTFILE "$prepend";
+      print TESTFILE "#include <$h>\n";
+      if ($maybe_opaque == 1) {
+	print TESTFILE "$type *a;\n";
+      } else {
+	print TESTFILE "$type a;\n";
+      }
+      close (TESTFILE);
+
+      compiletest ($fnamebase, "Testing for type $type",
+		   ($optional
+		    ? "NOT AVAILABLE"
+		    : "Type \"$type\" not available."), $missing, $optional,
+		   $xfail);
+    } elsif (/^tag *({([^}]*)|([a-zA-Z0-9_]*))/) {
+      my($type) = "$2$3";
+
+      # Remember that this name is allowed.
+      if ($type =~ /^struct *(.*)/) {
+	push @allow, $1;
+      } elsif ($type =~ /^union *(.*)/) {
+	push @allow, $1;
+      } else {
+	push @allow, $type;
+      }
+
+      # Generate a program to test for the availability of this type.
+      open (TESTFILE, ">$fnamebase.c");
+      print TESTFILE "$prepend";
+      print TESTFILE "#include <$h>\n";
+      print TESTFILE "$type;\n";
+      close (TESTFILE);
+
+      compiletest ($fnamebase, "Testing for type $type",
+		   "Type \"$type\" not available.", $missing, 0, $xfail);
+    } elsif (/^function *({([^}]*)}|([a-zA-Z0-9_]*)) [(][*]([a-zA-Z0-9_]*) ([(].*[)])/) {
+      my($rettype) = "$2$3";
+      my($fname) = "$4";
+      my($args) = "$5";
+      my($res) = $missing;
+
+      # Remember that this name is allowed.
+      push @allow, $fname;
+
+      # Generate a program to test for availability of this function.
+      open (TESTFILE, ">$fnamebase.c");
+      print TESTFILE "$prepend";
+      print TESTFILE "#include <$h>\n";
+      # print TESTFILE "#undef $fname\n";
+      print TESTFILE "$rettype (*(*foobarbaz) $args = $fname;\n";
+      close (TESTFILE);
+
+      $res = compiletest ($fnamebase, "Test availability of function $fname",
+			  ($optional
+			   ? "NOT AVAILABLE"
+			   : "Function \"$fname\" is not available."), $res,
+			  $optional, $xfail);
+
+      if ($res == 0 || $missing == 1 || !$optional) {
+	# Generate a program to test for the type of this function.
+	open (TESTFILE, ">$fnamebase.c");
+	print TESTFILE "$prepend";
+	print TESTFILE "#include <$h>\n";
+	# print TESTFILE "#undef $fname\n";
+	print TESTFILE "extern $rettype (*(*foobarbaz) $args;\n";
+	print TESTFILE "extern __typeof__ (&$fname) foobarbaz;\n";
+	close (TESTFILE);
+
+	compiletest ($fnamebase, "Test for type of function $fname",
+		     "Function \"$fname\" has incorrect type.", $res, 0,
+		     $xfail);
+      }
+    } elsif (/^function *({([^}]*)}|([a-zA-Z0-9_]*)) ([a-zA-Z0-9_]*) ([(].*[)])/) {
+      my($rettype) = "$2$3";
+      my($fname) = "$4";
+      my($args) = "$5";
+      my($res) = $missing;
+
+      # Remember that this name is allowed.
+      push @allow, $fname;
+
+      # Generate a program to test for availability of this function.
+      open (TESTFILE, ">$fnamebase.c");
+      print TESTFILE "$prepend";
+      print TESTFILE "#include <$h>\n";
+      # print TESTFILE "#undef $fname\n";
+      print TESTFILE "$rettype (*foobarbaz) $args = $fname;\n";
+      close (TESTFILE);
+
+      $res = compiletest ($fnamebase, "Test availability of function $fname",
+			  ($optional
+			   ? "NOT AVAILABLE"
+			   : "Function \"$fname\" is not available."), $res,
+			  $optional, $xfail);
+
+      if ($res == 0 || $missing != 0 || !$optional) {
+	# Generate a program to test for the type of this function.
+	open (TESTFILE, ">$fnamebase.c");
+	print TESTFILE "$prepend";
+	print TESTFILE "#include <$h>\n";
+	# print TESTFILE "#undef $fname\n";
+	print TESTFILE "extern $rettype (*foobarbaz) $args;\n";
+	print TESTFILE "extern __typeof__ (&$fname) foobarbaz;\n";
+	close (TESTFILE);
+
+	compiletest ($fnamebase, "Test for type of function $fname",
+		     "Function \"$fname\" has incorrect type.", $res, 0,
+		     $xfail);
+      }
+    } elsif (/^variable *({([^}]*)}|([a-zA-Z0-9_]*)) ([a-zA-Z0-9_]*) *(.*)/) {
+      my($type) = "$2$3";
+      my($vname) = "$4";
+      my($rest) = "$5";
+      my($res) = $missing;
+
+      # Remember that this name is allowed.
+      push @allow, $vname;
+
+      # Generate a program to test for availability of this function.
+      open (TESTFILE, ">$fnamebase.c");
+      print TESTFILE "$prepend";
+      print TESTFILE "#include <$h>\n";
+      # print TESTFILE "#undef $fname\n";
+      print TESTFILE "typedef $type xyzzy$rest;\n";
+      print TESTFILE "$xyzzy *foobarbaz = &$vname;\n";
+      close (TESTFILE);
+
+      $res = compiletest ($fnamebase, "Test availability of variable $vname",
+			  "Variable \"$vname\" is not available.", $res, 0,
+			  $xfail);
+
+      # Generate a program to test for the type of this function.
+      open (TESTFILE, ">$fnamebase.c");
+      print TESTFILE "$prepend";
+      print TESTFILE "#include <$h>\n";
+      # print TESTFILE "#undef $fname\n";
+      print TESTFILE "extern $type $vname$rest;\n";
+      close (TESTFILE);
+
+      compiletest ($fnamebase, "Test for type of variable $fname",
+		   "Variable \"$vname\" has incorrect type.", $res, 0, $xfail);
+    } elsif (/^macro-function *({([^}]*)}|([a-zA-Z0-9_]*)) ([a-zA-Z0-9_]*) ([(].*[)])/) {
+      my($rettype) = "$2$3";
+      my($fname) = "$4";
+      my($args) = "$5";
+      my($res) = $missing;
+
+      # Remember that this name is allowed.
+      push @allow, $fname;
+
+      # Generate a program to test for availability of this function.
+      open (TESTFILE, ">$fnamebase.c");
+      print TESTFILE "$prepend";
+      print TESTFILE "#include <$h>\n";
+      print TESTFILE "#ifndef $fname\n";
+      print TESTFILE "$rettype (*foobarbaz) $args = $fname;\n";
+      print TESTFILE "#endif\n";
+      close (TESTFILE);
+
+      $res = compiletest ($fnamebase, "Test availability of macro $fname",
+			  "Function \"$fname\" is not available.", $res, 0,
+			  $xfail);
+
+      # Generate a program to test for the type of this function.
+      open (TESTFILE, ">$fnamebase.c");
+      print TESTFILE "$prepend";
+      print TESTFILE "#include <$h>\n";
+      print TESTFILE "#ifndef $fname\n";
+      print TESTFILE "extern $rettype (*foobarbaz) $args;\n";
+      print TESTFILE "extern __typeof__ (&$fname) foobarbaz;\n";
+      print TESTFILE "#endif\n";
+      close (TESTFILE);
+
+      compiletest ($fnamebase, "Test for type of macro $fname",
+		   "Function \"$fname\" has incorrect type.", $res, 0, $xfail);
+    } elsif (/^macro-str *([^	 ]*) *(\".*\")/) {
+      # The above regex doesn't handle a \" in a string.
+      my($macro) = "$1";
+      my($string) = "$2";
+      my($res) = $missing;
+
+      # Remember that this name is allowed.
+      push @allow, $macro;
+
+      # Generate a program to test for availability of this macro.
+      open (TESTFILE, ">$fnamebase.c");
+      print TESTFILE "$prepend";
+      print TESTFILE "#include <$h>\n";
+      print TESTFILE "#ifndef $macro\n";
+      print TESTFILE "# error \"Macro $macro not defined\"\n";
+      print TESTFILE "#endif\n";
+      close (TESTFILE);
+
+      compiletest ($fnamebase, "Test availability of macro $macro",
+		   "Macro \"$macro\" is not available.", $missing, 0, $xfail);
+
+      # Generate a program to test for the value of this macro.
+      open (TESTFILE, ">$fnamebase.c");
+      print TESTFILE "$prepend";
+      print TESTFILE "#include <$h>\n";
+      # We can't include <string.h> here.
+      print TESTFILE "extern int (strcmp)(const char *, const char *);\n";
+      print TESTFILE "int main (void) { return (strcmp) ($macro, $string) != 0;}\n";
+      close (TESTFILE);
+
+      $res = runtest ($fnamebase, "Testing for value of macro $macro",
+		      "Macro \"$macro\" has not the right value.", $res,
+		      $xfail);
+    } elsif (/^allow-header *(.*)/) {
+      my($pattern) = $1;
+      if ($seenheader{$pattern} != 1) {
+	push @allowheader, $pattern;
+	$seenheader{$pattern} = 1;
+      }
+      next control;
+    } elsif (/^allow *(.*)/) {
+      my($pattern) = $1;
+      push @allow, $pattern;
+      next control;
+    } else {
+      # printf ("line is `%s'\n", $_);
+      next control;
+    }
+
+    printf ("\n");
+  }
+  close (CONTROL);
+
+  # Read the data files for the header files which are allowed to be included.
+  while ($#allowheader >= 0) {
+    my($ah) = pop @allowheader;
+
+    open (ALLOW, "$CC -E -D$standard -x c data/$ah-data |");
+    acontrol: while (<ALLOW>) {
+      chop;
+      next acontrol if (/^#/);
+      next acontrol if (/^[	]*$/);
+
+      s/^xfail(\[([^\]]*)\])?-//;
+      s/^optional-//;
+      if (/^element *({([^}]*)}|([^ ]*)) *({([^}]*)}|([^ ]*)) *([A-Za-z0-9_]*) *(.*)/) {
+	push @allow, $7;
+      } elsif (/^(macro|constant|macro-constant|macro-int-constant) +([a-zA-Z0-9_]*) *(?:{([^}]*)} *)?(?:([>=<!]+) ([A-Za-z0-9_-]*))?/) {
+	push @allow, $2;
+      } elsif (/^(type|tag) *({([^}]*)|([a-zA-Z0-9_]*))/) {
+	my($type) = "$3$4";
+
+	# Remember that this name is allowed.
+	if ($type =~ /^struct *(.*)/) {
+	  push @allow, $1;
+	} elsif ($type =~ /^union *(.*)/) {
+	  push @allow, $1;
+	} else {
+	  push @allow, $type;
+	}
+      } elsif (/^function *({([^}]*)}|([a-zA-Z0-9_]*)) [(][*]([a-zA-Z0-9_]*) ([(].*[)])/) {
+	push @allow, $4;
+      } elsif (/^function *({([^}]*)}|([a-zA-Z0-9_]*)) ([a-zA-Z0-9_]*) ([(].*[)])/) {
+	push @allow, $4;
+      } elsif (/^variable *({([^}]*)}|([a-zA-Z0-9_]*)) ([a-zA-Z0-9_]*)/) {
+	push @allow, $4;
+      } elsif (/^macro-function *({([^}]*)}|([a-zA-Z0-9_]*)) ([a-zA-Z0-9_]*) ([(].*[)])/) {
+	push @allow, $4;
+      } elsif (/^symbol *([a-zA-Z0-9_]*) *([A-Za-z0-9_-]*)?/) {
+	push @allow, $1;
+      } elsif (/^allow-header *(.*)/) {
+	if ($seenheader{$1} != 1) {
+	  push @allowheader, $1;
+	  $seenheader{$1} = 1;
+	}
+      } elsif (/^allow *(.*)/) {
+	push @allow, $1;
+      }
+    }
+    close (ALLOW);
+  }
+
+  if ($test_exist) {
+    printf ("  Not defined\n");
+  } else {
+    # Now check the namespace.
+    printf ("  Checking the namespace of \"%s\"... ", $h);
+    if ($missing) {
+      ++$skipped;
+      printf ("SKIP\n");
+    } else {
+      checknamespace ($h, $fnamebase, @allow);
+    }
+  }
+
+  printf ("\n\n");
+}
+
+printf "-" x 76 . "\n";
+printf ("  Total number of tests   : %4d\n", $total);
+
+printf ("  Number of failed tests  : %4d (", $errors);
+$percent = ($errors * 100) / $total;
+if ($errors > 0 && $percent < 1.0) {
+  printf (" <1%%)\n");
+} else {
+  printf ("%3d%%)\n", $percent);
+}
+
+printf ("  Number of xfailed tests : %4d (", $xerrors);
+$percent = ($xerrors * 100) / $total;
+if ($xerrors > 0 && $percent < 1.0) {
+  printf (" <1%%)\n");
+} else {
+  printf ("%3d%%)\n", $percent);
+}
+
+printf ("  Number of skipped tests : %4d (", $skipped);
+$percent = ($skipped * 100) / $total;
+if ($skipped > 0 && $percent < 1.0) {
+  printf (" <1%%)\n");
+} else {
+  printf ("%3d%%)\n", $percent);
+}
+
+exit $errors != 0;
+# Local Variables:
+#  perl-indent-level: 2
+# End: