1 # Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved
2 # Copyright (C) 2006 Alexey Proskuryakov (ap@nypop.com)
3 # Copyright (C) 2010 Andras Becsi (abecsi@inf.u-szeged.hu), University of Szeged
5 # Redistribution and use in source and binary forms, with or without
6 # modification, are permitted provided that the following conditions
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.
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.
29 # Module to share code to detect the existance of features in built binaries.
36 our ($VERSION, @ISA, @EXPORT, @EXPORT_OK, %EXPORT_TAGS);
39 @EXPORT = qw(&checkWebCoreFeatureSupport
40 &removeLibraryDependingOnFeature);
45 sub libraryContainsSymbol($$)
47 my ($path, $symbol) = @_;
49 if (isCygwin() or isWindows()) {
50 # FIXME: Implement this for Windows.
56 open NM, "-|", "nm", $path or die;
58 $foundSymbol = 1 if /$symbol/; # FIXME: This should probably check for word boundaries before/after the symbol name.
67 my ($featureName, $path) = @_;
68 my %symbolForFeature = (
69 "MathML" => "MathMLElement",
70 "SVG" => "SVGDefsElement", # We used to look for SVGElement but isSVGElement exists (and would match) in --no-svg builds.
71 "Accelerated Compositing" => "GraphicsLayer",
72 "3D Rendering" => "WebCoreHas3DRendering",
73 "3D Canvas" => "WebGLShader",
74 "WCSS" => "parseWCSSInputProperty",
75 "XHTMLMP" => "isXHTMLMPDocument",
76 "MHTML" => "MHTMLArchive"
78 my $symbolName = $symbolForFeature{$featureName};
79 die "Unknown feature: $featureName" unless $symbolName;
80 return libraryContainsSymbol($path, $symbolName);
83 sub checkWebCoreFeatureSupport($$)
85 my ($feature, $required) = @_;
86 my $libraryName = "WebCore";
87 my $path = builtDylibPathForName($libraryName);
88 my $hasFeature = hasFeature($feature, $path);
89 if ($required && !$hasFeature) {
90 die "$libraryName at \"$path\" does not include $hasFeature support. See build-webkit --help\n";
95 sub removeLibraryDependingOnFeature($$$)
97 my ($libraryName, $featureName, $shouldHaveFeature) = @_;
98 my $path = builtDylibPathForName($libraryName);
99 return unless -x $path;
101 my $hasFeature = hasFeature($featureName, $path);
102 system "rm -f $path" if ($shouldHaveFeature xor $hasFeature);