Initial import from the monolithic Qt.

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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 325 insertions, 0 deletions

diff --git a/bin/elf2e32_qtwrapper.pl b/bin/elf2e32_qtwrapper.pl
new file mode 100755
index 0000000000..24b910b868
--- /dev/null
+++ b/bin/elf2e32_qtwrapper.pl
@@ -0,0 +1,325 @@
+#!/usr/bin/perl -w
+#############################################################################
+##
+## Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+## All rights reserved.
+## Contact: Nokia Corporation (qt-info@nokia.com)
+##
+## This file is part of the utilities of the Qt Toolkit.
+##
+## $QT_BEGIN_LICENSE:LGPL$
+## No Commercial Usage
+## This file contains pre-release code and may not be distributed.
+## You may use this file in accordance with the terms and conditions
+## contained in the Technology Preview License Agreement accompanying
+## this package.
+##
+## GNU Lesser General Public License Usage
+## Alternatively, this file may be used under the terms of the GNU Lesser
+## General Public License version 2.1 as published by the Free Software
+## Foundation and appearing in the file LICENSE.LGPL included in the
+## packaging of this file.  Please review the following information to
+## ensure the GNU Lesser General Public License version 2.1 requirements
+## will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+##
+## In addition, as a special exception, Nokia gives you certain additional
+## rights.  These rights are described in the Nokia Qt LGPL Exception
+## version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+##
+## If you have questions regarding the use of this file, please contact
+## Nokia at qt-info@nokia.com.
+##
+##
+##
+##
+##
+##
+##
+##
+## $QT_END_LICENSE$
+##
+#############################################################################
+
+# A script to get around some shortcomings in elf2e32, namely:
+# - Returning 0 even when there are errors.
+# - Excluding symbols from the dso file even when they are present in the ELF file.
+# - Including symbols in the the dso file even when they are not present in the ELF file.
+# - Overwriting the old dso file even when there are no changes (increases build time).
+
+use File::Copy;
+
+my @args = ();
+my @definput;
+my @defoutput;
+my @dso;
+my @tmpdso;
+foreach (@ARGV) {
+    if (/^--definput/o) {
+        @definput = split('=', $_);
+    } elsif (/^--defoutput/o) {
+        @defoutput = split('=', $_);
+    } elsif (/^--dso/o) {
+        @dso = split('=', $_);
+    } elsif (/^--tmpdso/o) {
+        @tmpdso = split('=', $_);
+        $tmpdso[0] = "--dso";
+    } else {
+        push(@args, $_);
+    }
+}
+
+@definput = () if (!@definput || ! -e $definput[1]);
+
+if (@dso && !@tmpdso || !@dso && @tmpdso) {
+    print("--dso and --tmpdso must be used together.\n");
+    exit 1;
+}
+
+my $buildingLibrary = (@defoutput && @dso) ? 1 : 0;
+
+my $fixupFile = "";
+my $runCount = 0;
+my $returnCode = 0;
+
+# For debugging. Make it nonzero to give verbose output.
+my $debugScript = 1;
+my @usedDefFiles;
+sub recordDefFile {
+    return if (!$debugScript);
+
+    my ($msg, $file) = @_;
+    my $content = "$msg, $file:\n";
+    my $defFileFd;
+    if (!open($defFileFd, "< $file")) {
+        print("Warning: Could not open $file (for debug analysis)\n");
+        return;
+    }
+    while (<$defFileFd>) {
+        $content .= $_;
+    }
+
+    push(@usedDefFiles, $content);
+}
+sub printRecordedDefFiles {
+    return if (!$debugScript);
+
+    foreach (@usedDefFiles) {
+        print ("$_\n");
+    }
+}
+
+sub missingSymbolMismatch
+{
+    my $missingSymbolSum = $_[0];
+
+    printRecordedDefFiles;
+
+    print("Bug in the native elf2e32 tool: Number of missing symbols does not\n");
+    print("match number of removed symbols in the output DEF file.\n\n");
+
+    print("Original elf2e32 output:\n");
+    print("  $missingSymbolSum Frozen Export\(s\) missing from the ELF file\n\n");
+
+    print("However $defoutput[1] contains more missing entries than that.\n\n");
+
+    print("This needs to be fixed manually in the DEF file.\n");
+    exit(2);
+}
+
+if ($debugScript) {
+    print("PATH: $ENV{PATH}\n");
+    print("EPOCROOT: $ENV{EPOCROOT}\n");
+}
+
+while (1) {
+    if (++$runCount > 2) {
+        printRecordedDefFiles if ($debugScript);
+        print("Internal error in $0, link succeeded, but exports may be wrong.\n");
+        last;
+    }
+
+    my $elf2e32Pipe;
+    my $elf2e32Cmd = "elf2e32 @args"
+         . " " . join("=", @definput)
+         . " " . join("=", @defoutput)
+         . " " . join("=", @tmpdso);
+    open($elf2e32Pipe, "$elf2e32Cmd 2>&1 |") or die ("Could not run elf2e32");
+
+    my %fixupSymbols;
+    my $foundBrokenSymbols = 0;
+    my $missingSymbolSum = 0;
+    my $missingSymbolCount = 0;
+    my $errors = 0;
+    while (<$elf2e32Pipe>) {
+        print;
+        if (/Error:/io) {
+            $errors = 1;
+        } elsif (/symbol ([a-z0-9_]+) absent in the DEF file, but present in the ELF file/io) {
+            $fixupSymbols{$1} = 1;
+            $foundBrokenSymbols = 1;
+        } elsif (/([0-9]+) Frozen Export\(s\) missing from the ELF file/io) {
+            $missingSymbolSum = $1;
+            $foundBrokenSymbols = 1;
+        }
+    }
+    close($elf2e32Pipe);
+
+    if ($debugScript) {
+        recordDefFile("Run no $runCount, elf2e32 DEF file input", "$definput[1]");
+        recordDefFile("Run no $runCount, elf2e32 DEF file output", "$defoutput[1]");
+    }
+
+    if ($errors) {
+        $returnCode = 1;
+        last;
+    }
+
+    if ($buildingLibrary && $runCount == 1) {
+        my $tmpDefFile;
+        my $newDefFile;
+        my $origDefFile;
+        my $savedNewDefFileLine = "";
+        if ($definput[1]) {
+            open($origDefFile, "< $definput[1]") or die("Could not open $definput[1]");
+        }
+        open($newDefFile, "< $defoutput[1]") or die("Could not open $defoutput[1]");
+        open($tmpDefFile, "> $defoutput[1].tmp") or die("Could not open $defoutput[1].tmp");
+        print($tmpDefFile "EXPORTS\n") or die("Could not write to temporary DEF file: $!");
+        $fixupFile = "$defoutput[1].tmp";
+        while (1) {
+            my $origDefLine;
+            my $origSym;
+            my $origOrdinal;
+            my $origExtraData;
+            my $newDefLine;
+            my $newSym;
+            my $newOrdinal;
+            my $newExtraData;
+            my $defLine;
+            my $sym;
+            my $ordinal;
+            my $extraData;
+            if ($definput[1]) {
+                # Read from original def file, and skip non-symbol lines
+                while (1) {
+                    $origDefLine = <$origDefFile>;
+                    if (defined($origDefLine)) {
+                        $origDefLine =~ s/[\n\r]//;
+                        if ($origDefLine =~ /([a-z0-9_]+) +\@ *([0-9]+) (.*)/i) {
+                            $origSym = $1;
+                            $origOrdinal = $2;
+                            $origExtraData = $3;
+                            last;
+                        }
+                    } else {
+                        last;
+                    }
+                }
+            }
+
+            if ($savedNewDefFileLine) {
+                # This happens if the new def file was missing an entry.
+                $newDefLine = $savedNewDefFileLine;
+                $newDefLine =~ /([a-z0-9_]+) +\@ *([0-9]+) (.*)/i or die("$0: Shouldn't happen");
+                $newSym = $1;
+                $newOrdinal = $2;
+                $newExtraData = $3;
+            } else {
+                # Read from new def file, and skip non-symbol lines
+                while (1) {
+                    $newDefLine = <$newDefFile>;
+                    if (defined($newDefLine)) {
+                        $newDefLine =~ s/[\n\r]//;
+                        if ($newDefLine =~ /([a-z0-9_]+) +\@ *([0-9]+) (.*)/i) {
+                            $newSym = $1;
+                            $newOrdinal = $2;
+                            $newExtraData = $3;
+                            last;
+                        }
+                    } else {
+                        last;
+                    }
+                }
+            }
+            $savedNewDefFileLine = "";
+            last if (!defined($origDefLine) && !defined($newDefLine));
+
+            if (defined($origOrdinal) && (!defined($newOrdinal) || $origOrdinal != $newOrdinal)) {
+                # If the symbol is missing from the new def file, use the original symbol.
+                $savedNewDefFileLine = $newDefLine;
+                $defLine = $origDefLine;
+                $sym = $origSym;
+                $ordinal = $origOrdinal;
+                $extraData = $origExtraData;
+            } else {
+                $defLine = $newDefLine;
+                $sym = $newSym;
+                $ordinal = $newOrdinal;
+                if ($newExtraData =~ /ABSENT/) {
+                    # Special case to keep "DATA [0-9]+" data in absent entries.
+                    $extraData = $origExtraData;
+                } else {
+                    $extraData = $newExtraData;
+                }
+            }
+            if (exists($fixupSymbols{$sym})) {
+                # Fix symbols that have returned after first being marked ABSENT.
+                $extraData =~ s/ ABSENT//;
+            } elsif ($defLine =~ s/; MISSING://) {
+                # Auto-absent symbols.
+                $extraData .= " ABSENT";
+                if (++$missingSymbolCount > $missingSymbolSum) {
+                    missingSymbolMismatch($missingSymbolSum);
+                }
+            }
+            print($tmpDefFile "\t$sym \@ $ordinal $extraData\n") or die("Could not write to temporary DEF file: $!");
+        }
+        print($tmpDefFile "\n") or die("Could not write to temporary DEF file: $!");
+        close($origDefFile) if ($definput[1]);
+        close($newDefFile);
+        close($tmpDefFile);
+
+        $definput[1] = "$defoutput[1].tmp";
+
+    }
+    if (!$foundBrokenSymbols || $errors) {
+        last;
+    }
+
+    print("Rerunning elf2e32 due to DEF file / ELF file mismatch\n");
+};
+
+if ($fixupFile) {
+    unlink($defoutput[1]);
+    move($fixupFile, $defoutput[1]);
+}
+
+exit $returnCode if ($returnCode != 0);
+
+if ($buildingLibrary) {
+    my $differenceFound = 0;
+
+    if (-e $dso[1]) {
+        my $dsoFile;
+        my $tmpdsoFile;
+        my $dsoBuf;
+        my $tmpdsoBuf;
+        open($dsoFile, "< $dso[1]") or die("Could not open $dso[1]");
+        open($tmpdsoFile, "< $tmpdso[1]") or die("Could not open $tmpdso[1]");
+        binmode($dsoFile);
+        binmode($tmpdsoFile);
+        while(read($dsoFile, $dsoBuf, 4096) && read($tmpdsoFile, $tmpdsoBuf, 4096)) {
+            if ($dsoBuf ne $tmpdsoBuf) {
+                $differenceFound = 1;
+            }
+        }
+        close($tmpdsoFile);
+        close($dsoFile);
+    } else {
+        $differenceFound = 1;
+    }
+
+    if ($differenceFound) {
+        copy($tmpdso[1], $dso[1]) or die("Could not copy $tmpdso[1] to $dso[1]: $!");
+    }
+}