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# Copyright (C) 2005, 2006, 2007, 2008, 2009, 2012 Apple Inc. All rights reserved
# Copyright (C) 2006 Alexey Proskuryakov (ap@nypop.com)
# Copyright (C) 2010 Andras Becsi (abecsi@inf.u-szeged.hu), University of Szeged
#
# 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.
# Module to share code to detect the existance of features in built binaries.
use strict;
use warnings;
use FindBin;
use lib $FindBin::Bin;
use webkitdirs;
BEGIN {
use Exporter ();
our ($VERSION, @ISA, @EXPORT, @EXPORT_OK, %EXPORT_TAGS);
$VERSION = 1.00;
@ISA = qw(Exporter);
@EXPORT = qw(&checkWebCoreFeatureSupport);
%EXPORT_TAGS = ( );
@EXPORT_OK = ();
}
sub libraryContainsSymbol($$)
{
my ($path, $symbol) = @_;
if (isCygwin() or isWindows()) {
# FIXME: Implement this for Windows.
return 0;
}
my $foundSymbol = 0;
if (-e $path) {
open NM, "-|", nmPath(), $path or die;
while (<NM>) {
$foundSymbol = 1 if /$symbol/; # FIXME: This should probably check for word boundaries before/after the symbol name.
}
close NM;
}
return $foundSymbol;
}
sub hasFeature($$)
{
my ($featureName, $path) = @_;
my %symbolForFeature = (
"MathML" => "MathMLElement",
"SVG" => "SVGDefsElement", # We used to look for SVGElement but isSVGElement exists (and would match) in --no-svg builds.
"Accelerated Compositing" => "GraphicsLayer",
"3D Rendering" => "WebCoreHas3DRendering",
"3D Canvas" => "WebGLShader",
"MHTML" => "MHTMLArchive"
);
my $symbolName = $symbolForFeature{$featureName};
die "Unknown feature: $featureName" unless $symbolName;
return libraryContainsSymbol($path, $symbolName);
}
sub checkWebCoreFeatureSupport($$)
{
my ($feature, $required) = @_;
my $libraryName = "WebCore";
my $path = builtDylibPathForName($libraryName);
my $hasFeature = hasFeature($feature, $path);
if ($required && !$hasFeature) {
die "$libraryName at \"$path\" does not include $hasFeature support. See build-webkit --help\n";
}
return $hasFeature;
}
1;
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