1 files changed, 145 insertions, 0 deletions
diff --git a/bin/elf2e32_qtwrapper.pl b/bin/elf2e32_qtwrapper.pl
new file mode 100644
index 0000000..694d54a
--- /dev/null
+++ b/bin/elf2e32_qtwrapper.pl
@@ -0,0 +1,145 @@
+#!/usr/bin/perl -w
+
+# 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 $returnCode = 0;
+
+while (1) {
+    if (++$runCount > 2) {
+        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 $errors = 0;
+    while (<$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) {
+            $foundBrokenSymbols = 1;
+        }
+    }
+    close($elf2e32Pipe);
+
+    if ($errors) {
+        $returnCode = 1;
+        last;
+    }
+
+    if ($buildingLibrary) {
+        my $tmpDefFile;
+        my $defFile;
+        open($defFile, "< $defoutput[1]") or die("Could not open $defoutput[1]");
+        open($tmpDefFile, "> $defoutput[1].tmp") or die("Could not open $defoutput[1].tmp");
+        $fixupFile = "$defoutput[1].tmp";
+        while (<$defFile>) {
+            s/\r//;
+            s/\n//;
+            next if (/; NEW:/);
+            if (/([a-z0-9_]+) @/i) {
+                if (exists($fixupSymbols{$1})) {
+                    s/ ABSENT//;
+                } elsif (s/; MISSING://) {
+                    s/$/ ABSENT/;
+                }
+            }
+            print($tmpDefFile "$_\n");
+        }
+        close($defFile);
+        close($tmpDefFile);
+
+        $definput[1] = "$defoutput[1].tmp";
+
+        if (!$foundBrokenSymbols || $errors) {
+            last;
+        }
+
+        print("Rerunning elf2e32 due to DEF file / ELF file mismatch\n");
+    } else {
+        last;
+    }
+};
+
+if ($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]);
+    }
+}