38be0d1383
This is the beginning of revision history for this module. If you want to look at revision history older than this, please refer to the Qt Git wiki for how to use Git history grafting. At the time of writing, this wiki is located here: http://qt.gitorious.org/qt/pages/GitIntroductionWithQt If you have already performed the grafting and you don't see any history beyond this commit, try running "git log" with the "--follow" argument. Branched from the monolithic repo, Qt master branch, at commit 896db169ea224deb96c59ce8af800d019de63f12
326 lines
10 KiB
Perl
Executable File
326 lines
10 KiB
Perl
Executable File
#!/usr/bin/perl -w
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#############################################################################
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##
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## Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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## All rights reserved.
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## Contact: Nokia Corporation (qt-info@nokia.com)
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##
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## This file is part of the utilities of the Qt Toolkit.
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##
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## $QT_BEGIN_LICENSE:LGPL$
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## No Commercial Usage
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## This file contains pre-release code and may not be distributed.
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## You may use this file in accordance with the terms and conditions
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## contained in the Technology Preview License Agreement accompanying
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## this package.
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##
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## GNU Lesser General Public License Usage
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## Alternatively, this file may be used under the terms of the GNU Lesser
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## General Public License version 2.1 as published by the Free Software
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## Foundation and appearing in the file LICENSE.LGPL included in the
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## packaging of this file. Please review the following information to
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## ensure the GNU Lesser General Public License version 2.1 requirements
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## will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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##
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## In addition, as a special exception, Nokia gives you certain additional
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## rights. These rights are described in the Nokia Qt LGPL Exception
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## version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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##
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## If you have questions regarding the use of this file, please contact
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## Nokia at qt-info@nokia.com.
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##
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##
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##
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##
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##
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##
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##
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##
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## $QT_END_LICENSE$
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##
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#############################################################################
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# A script to get around some shortcomings in elf2e32, namely:
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# - Returning 0 even when there are errors.
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# - Excluding symbols from the dso file even when they are present in the ELF file.
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# - Including symbols in the the dso file even when they are not present in the ELF file.
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# - Overwriting the old dso file even when there are no changes (increases build time).
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use File::Copy;
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my @args = ();
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my @definput;
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my @defoutput;
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my @dso;
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my @tmpdso;
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foreach (@ARGV) {
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if (/^--definput/o) {
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@definput = split('=', $_);
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} elsif (/^--defoutput/o) {
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@defoutput = split('=', $_);
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} elsif (/^--dso/o) {
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@dso = split('=', $_);
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} elsif (/^--tmpdso/o) {
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@tmpdso = split('=', $_);
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$tmpdso[0] = "--dso";
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} else {
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push(@args, $_);
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}
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}
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@definput = () if (!@definput || ! -e $definput[1]);
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if (@dso && !@tmpdso || !@dso && @tmpdso) {
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print("--dso and --tmpdso must be used together.\n");
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exit 1;
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}
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my $buildingLibrary = (@defoutput && @dso) ? 1 : 0;
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my $fixupFile = "";
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my $runCount = 0;
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my $returnCode = 0;
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# For debugging. Make it nonzero to give verbose output.
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my $debugScript = 1;
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my @usedDefFiles;
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sub recordDefFile {
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return if (!$debugScript);
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my ($msg, $file) = @_;
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my $content = "$msg, $file:\n";
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my $defFileFd;
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if (!open($defFileFd, "< $file")) {
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print("Warning: Could not open $file (for debug analysis)\n");
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return;
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}
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while (<$defFileFd>) {
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$content .= $_;
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}
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push(@usedDefFiles, $content);
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}
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sub printRecordedDefFiles {
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return if (!$debugScript);
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foreach (@usedDefFiles) {
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print ("$_\n");
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}
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}
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sub missingSymbolMismatch
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{
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my $missingSymbolSum = $_[0];
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printRecordedDefFiles;
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print("Bug in the native elf2e32 tool: Number of missing symbols does not\n");
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print("match number of removed symbols in the output DEF file.\n\n");
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print("Original elf2e32 output:\n");
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print(" $missingSymbolSum Frozen Export\(s\) missing from the ELF file\n\n");
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print("However $defoutput[1] contains more missing entries than that.\n\n");
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print("This needs to be fixed manually in the DEF file.\n");
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exit(2);
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}
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if ($debugScript) {
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print("PATH: $ENV{PATH}\n");
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print("EPOCROOT: $ENV{EPOCROOT}\n");
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}
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while (1) {
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if (++$runCount > 2) {
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printRecordedDefFiles if ($debugScript);
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print("Internal error in $0, link succeeded, but exports may be wrong.\n");
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last;
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}
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my $elf2e32Pipe;
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my $elf2e32Cmd = "elf2e32 @args"
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. " " . join("=", @definput)
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. " " . join("=", @defoutput)
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. " " . join("=", @tmpdso);
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open($elf2e32Pipe, "$elf2e32Cmd 2>&1 |") or die ("Could not run elf2e32");
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my %fixupSymbols;
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my $foundBrokenSymbols = 0;
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my $missingSymbolSum = 0;
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my $missingSymbolCount = 0;
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my $errors = 0;
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while (<$elf2e32Pipe>) {
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print;
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if (/Error:/io) {
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$errors = 1;
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} elsif (/symbol ([a-z0-9_]+) absent in the DEF file, but present in the ELF file/io) {
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$fixupSymbols{$1} = 1;
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$foundBrokenSymbols = 1;
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} elsif (/([0-9]+) Frozen Export\(s\) missing from the ELF file/io) {
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$missingSymbolSum = $1;
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$foundBrokenSymbols = 1;
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}
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}
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close($elf2e32Pipe);
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if ($debugScript) {
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recordDefFile("Run no $runCount, elf2e32 DEF file input", "$definput[1]");
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recordDefFile("Run no $runCount, elf2e32 DEF file output", "$defoutput[1]");
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}
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if ($errors) {
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$returnCode = 1;
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last;
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}
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if ($buildingLibrary && $runCount == 1) {
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my $tmpDefFile;
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my $newDefFile;
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my $origDefFile;
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my $savedNewDefFileLine = "";
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if ($definput[1]) {
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open($origDefFile, "< $definput[1]") or die("Could not open $definput[1]");
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}
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open($newDefFile, "< $defoutput[1]") or die("Could not open $defoutput[1]");
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open($tmpDefFile, "> $defoutput[1].tmp") or die("Could not open $defoutput[1].tmp");
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print($tmpDefFile "EXPORTS\n") or die("Could not write to temporary DEF file: $!");
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$fixupFile = "$defoutput[1].tmp";
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while (1) {
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my $origDefLine;
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my $origSym;
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my $origOrdinal;
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my $origExtraData;
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my $newDefLine;
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my $newSym;
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my $newOrdinal;
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my $newExtraData;
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my $defLine;
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my $sym;
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my $ordinal;
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my $extraData;
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if ($definput[1]) {
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# Read from original def file, and skip non-symbol lines
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while (1) {
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$origDefLine = <$origDefFile>;
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if (defined($origDefLine)) {
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$origDefLine =~ s/[\n\r]//;
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if ($origDefLine =~ /([a-z0-9_]+) +\@ *([0-9]+) (.*)/i) {
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$origSym = $1;
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$origOrdinal = $2;
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$origExtraData = $3;
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last;
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}
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} else {
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last;
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}
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}
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}
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if ($savedNewDefFileLine) {
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# This happens if the new def file was missing an entry.
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$newDefLine = $savedNewDefFileLine;
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$newDefLine =~ /([a-z0-9_]+) +\@ *([0-9]+) (.*)/i or die("$0: Shouldn't happen");
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$newSym = $1;
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$newOrdinal = $2;
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$newExtraData = $3;
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} else {
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# Read from new def file, and skip non-symbol lines
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while (1) {
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$newDefLine = <$newDefFile>;
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if (defined($newDefLine)) {
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$newDefLine =~ s/[\n\r]//;
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if ($newDefLine =~ /([a-z0-9_]+) +\@ *([0-9]+) (.*)/i) {
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$newSym = $1;
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$newOrdinal = $2;
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$newExtraData = $3;
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last;
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}
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} else {
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last;
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}
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}
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}
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$savedNewDefFileLine = "";
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last if (!defined($origDefLine) && !defined($newDefLine));
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if (defined($origOrdinal) && (!defined($newOrdinal) || $origOrdinal != $newOrdinal)) {
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# If the symbol is missing from the new def file, use the original symbol.
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$savedNewDefFileLine = $newDefLine;
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$defLine = $origDefLine;
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$sym = $origSym;
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$ordinal = $origOrdinal;
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$extraData = $origExtraData;
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} else {
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$defLine = $newDefLine;
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$sym = $newSym;
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$ordinal = $newOrdinal;
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if ($newExtraData =~ /ABSENT/) {
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# Special case to keep "DATA [0-9]+" data in absent entries.
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$extraData = $origExtraData;
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} else {
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$extraData = $newExtraData;
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}
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}
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if (exists($fixupSymbols{$sym})) {
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# Fix symbols that have returned after first being marked ABSENT.
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$extraData =~ s/ ABSENT//;
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} elsif ($defLine =~ s/; MISSING://) {
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# Auto-absent symbols.
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$extraData .= " ABSENT";
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if (++$missingSymbolCount > $missingSymbolSum) {
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missingSymbolMismatch($missingSymbolSum);
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}
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}
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print($tmpDefFile "\t$sym \@ $ordinal $extraData\n") or die("Could not write to temporary DEF file: $!");
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}
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print($tmpDefFile "\n") or die("Could not write to temporary DEF file: $!");
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close($origDefFile) if ($definput[1]);
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close($newDefFile);
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close($tmpDefFile);
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$definput[1] = "$defoutput[1].tmp";
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}
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if (!$foundBrokenSymbols || $errors) {
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last;
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}
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print("Rerunning elf2e32 due to DEF file / ELF file mismatch\n");
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};
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if ($fixupFile) {
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unlink($defoutput[1]);
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move($fixupFile, $defoutput[1]);
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}
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exit $returnCode if ($returnCode != 0);
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if ($buildingLibrary) {
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my $differenceFound = 0;
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if (-e $dso[1]) {
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my $dsoFile;
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my $tmpdsoFile;
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my $dsoBuf;
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my $tmpdsoBuf;
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open($dsoFile, "< $dso[1]") or die("Could not open $dso[1]");
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open($tmpdsoFile, "< $tmpdso[1]") or die("Could not open $tmpdso[1]");
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binmode($dsoFile);
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binmode($tmpdsoFile);
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while(read($dsoFile, $dsoBuf, 4096) && read($tmpdsoFile, $tmpdsoBuf, 4096)) {
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if ($dsoBuf ne $tmpdsoBuf) {
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$differenceFound = 1;
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}
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}
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close($tmpdsoFile);
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close($dsoFile);
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} else {
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$differenceFound = 1;
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}
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if ($differenceFound) {
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copy($tmpdso[1], $dso[1]) or die("Could not copy $tmpdso[1] to $dso[1]: $!");
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}
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}
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