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      1 #!/usr/bin/perl
      2 
      3 # Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
      4 #
      5 # Redistribution and use in source and binary forms, with or without
      6 # modification, are permitted provided that the following conditions
      7 # are met:
      8 #
      9 # 1.  Redistributions of source code must retain the above copyright
     10 #     notice, this list of conditions and the following disclaimer. 
     11 # 2.  Redistributions in binary form must reproduce the above copyright
     12 #     notice, this list of conditions and the following disclaimer in the
     13 #     documentation and/or other materials provided with the distribution. 
     14 # 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     15 #     its contributors may be used to endorse or promote products derived
     16 #     from this software without specific prior written permission. 
     17 #
     18 # THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     19 # EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     20 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     21 # DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     22 # DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     23 # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     24 # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     25 # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     27 # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28 
     29 # "check-for-global-initializers" script for WebKit Open Source Project
     30 
     31 # Intended to be invoked from an Xcode build step to check if there are
     32 # any global initializers in a target.
     33 
     34 use warnings;
     35 use strict;
     36 
     37 use File::Basename;
     38 
     39 sub touch($);
     40 
     41 my $arch = $ENV{'CURRENT_ARCH'};
     42 my $configuration = $ENV{'CONFIGURATION'};
     43 my $target = $ENV{'TARGET_NAME'};
     44 my $variant = $ENV{'CURRENT_VARIANT'};
     45 my $coverageBuild = $ENV{'WEBKIT_COVERAGE_BUILD'};
     46 my $debugRoot = $ENV{'WEBKIT_DEBUG_ROOT'};
     47 
     48 $arch = $ENV{'NATIVE_ARCH'} if !$arch; # for Xcode 2.1, which does not have CURRENT_ARCH
     49 $variant = "normal" if !$variant; # for Xcode 2.1, which does not have CURRENT_VARIANT
     50 
     51 my $executablePath = "$ENV{'TARGET_BUILD_DIR'}/$ENV{'EXECUTABLE_PATH'}";
     52 
     53 my $buildTimestampPath = $ENV{'TARGET_TEMP_DIR'} . "/" . basename($0) . ".timestamp";
     54 my $buildTimestampAge = -M $buildTimestampPath;
     55 my $scriptAge = -M $0;
     56 
     57 my $list = $ENV{"LINK_FILE_LIST_${variant}_${arch}"};
     58 
     59 if (!open LIST, $list) {
     60     print "ERROR: Could not open $list\n";
     61     exit 1;
     62 }
     63 
     64 my @files = <LIST>;
     65 chomp @files;
     66 close LIST;
     67 
     68 my $sawError = 0;
     69 
     70 for my $file (sort @files) {
     71     if (defined $buildTimestampAge && $buildTimestampAge < $scriptAge) {
     72         my $fileAge = -M $file;
     73         next if defined $fileAge && $fileAge > $buildTimestampAge;
     74     }
     75     if (!open NM, "(nm '$file' | sed 's/^/STDOUT:/') 2>&1 |") {
     76         print "ERROR: Could not open $file\n";
     77         $sawError = 1;
     78         next;
     79     }
     80     my $sawGlobal = 0;
     81     while (<NM>) {
     82         if (/^STDOUT:/) {
     83             $sawGlobal = 1 if /__GLOBAL__I/;
     84         } else {
     85             print STDERR if $_ ne "nm: no name list\n";
     86         }
     87     }
     88     close NM;
     89     if ($sawGlobal) {
     90         my $shortName = $file;
     91         $shortName =~ s/.*\///;
     92 
     93         # Special cases for files that have initializers in debug builds.
     94         if ($configuration eq "Debug" or $variant eq "debug" or $debugRoot) {
     95             if ($target eq "JavaScriptCore") {
     96                 next if $shortName eq "AllInOneFile.o";
     97                 next if $shortName eq "Opcode.o";
     98                 next if $shortName eq "Structure.o";
     99                 next if $shortName eq "nodes.o";
    100             }
    101             if ($target eq "WebCore") {
    102                 next if $shortName eq "CachedPage.o";
    103                 next if $shortName eq "CachedResource.o";
    104                 next if $shortName eq "Frame.o";
    105                 next if $shortName eq "JSCustomSQLTransactionCallback.o";
    106                 next if $shortName eq "JSLazyEventListener.o";
    107                 next if $shortName eq "Node.o";
    108                 next if $shortName eq "Page.o";
    109                 next if $shortName eq "Range.o";
    110                 next if $shortName eq "BidiRun.o";
    111                 next if $shortName eq "RenderObject.o";
    112                 next if $shortName eq "SubresourceLoader.o";
    113                 next if $shortName eq "SVGElementInstance.o";
    114                 next if $shortName eq "XMLHttpRequest.o";
    115             }
    116             if ($target eq "WebKit") {
    117                 next if $shortName eq "HostedNetscapePluginStream.o";
    118                 next if $shortName eq "NetscapePluginInstanceProxy.o";
    119             }
    120         }
    121 
    122         print "ERROR: $shortName has a global initializer in it! ($file)\n";
    123         $sawError = 1;
    124     }
    125 }
    126 
    127 if ($sawError and !$coverageBuild) {
    128     unlink $executablePath;
    129     exit 1;
    130 }
    131 
    132 touch($buildTimestampPath);
    133 exit 0;
    134 
    135 sub touch($)
    136 {
    137     my ($path) = @_;
    138     open(TOUCH, ">", $path) or die "$!";
    139     close(TOUCH);
    140 }
    141