2008-06-26 Darin Adler <darin@apple.com>

        * Scripts/check-for-weak-vtables: Added.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@34826 268f45cc-cd09-0410-ab3c-d52691b4dbfc

WebKitTools/ChangeLog

+2008-06-26  Darin Adler  <darin@apple.com>
+
+        * Scripts/check-for-weak-vtables: Added.
+
 2008-06-26  Beth Dakin  <bdakin@apple.com>
         Reviewed by Sam.

WebKitTools/Scripts/check-for-weak-vtables

+#!/usr/bin/perl
+
+# Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1.  Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer. 
+# 2.  Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in the
+#     documentation and/or other materials provided with the distribution. 
+# 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+#     its contributors may be used to endorse or promote products derived
+#     from this software without specific prior written permission. 
+#
+# THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# "check-for-global-initializers" script for Web Kit Open Source Project
+
+# Intended to be invoked from an Xcode build step to check if there are
+# any global initializers in a target.
+
+use warnings;
+use strict;
+
+use File::Basename;
+
+sub touch($);
+
+my $arch = $ENV{'CURRENT_ARCH'};
+my $configuration = $ENV{'CONFIGURATION'};
+my $target = $ENV{'TARGET_NAME'};
+my $variant = $ENV{'CURRENT_VARIANT'};
+my $coverageBuild = $ENV{'WEBKIT_COVERAGE_BUILD'};
+my $debugRoot = $ENV{'WEBKIT_DEBUG_ROOT'};
+
+$arch = $ENV{'NATIVE_ARCH'} if !$arch; # for Xcode 2.1, which does not have CURRENT_ARCH
+$variant = "normal" if !$variant; # for Xcode 2.1, which does not have CURRENT_VARIANT
+
+my $executablePath = "$ENV{'TARGET_BUILD_DIR'}/$ENV{'EXECUTABLE_PATH'}";
+
+my $buildTimestampPath = $ENV{'TARGET_TEMP_DIR'} . "/" . basename($0) . ".timestamp";
+my $buildTimestampAge = -M $buildTimestampPath;
+
+my $list = $ENV{"LINK_FILE_LIST_${variant}_${arch}"};
+
+if (!open LIST, $list) {
+    print "Could not open $list\n";
+    exit 1;
+}
+
+my @files = <LIST>;
+chomp @files;
+close LIST;
+
+my $sawError = 0;
+
+for my $file (sort @files) {
+    if (defined $buildTimestampAge) {
+        my $fileAge = -M $file;
+        next if defined $fileAge && $fileAge > $buildTimestampAge;
+    }
+    if (!open NM, "(nm -m '$file' | c++filt | sed 's/^/STDOUT:/') 2>&1 |") {
+        print "Could not open $file\n";
+        $sawError = 1;
+        next;
+    }
+    my @weakVTableClasses = ();
+    while (<NM>) {
+        if (/^STDOUT:/) {
+            push @weakVTableClasses, $1 if /weak external vtable for (.*)$/;
+        } else {
+            print STDERR if $_ ne "nm: no name list\n";
+        }
+    }
+    close NM;
+    if (@weakVTableClasses) {
+        my $shortName = $file;
+        $shortName =~ s/.*\///;
+
+        print "$shortName has a weak vtables in it ($file)\n";
+        print "Fix by making sure the first virtual function in each of these classes is not an inline:\n";
+        for my $class (sort @weakVTableClasses) {
+            print "    $class\n";
+        }
+        $sawError = 1;
+    }
+}
+
+if ($sawError and !$coverageBuild) {
+    unlink $executablePath;
+    exit 1;
+}
+
+touch($buildTimestampPath);
+
+exit 0;
+
+sub touch($)
+{
+    my ($path) = @_;
+    open(TOUCH, ">", $path) or die "$!";
+    close(TOUCH);
+}