Remove VDSO code, discussion in #283 (#285)

tools/linuxdeployqt/shared.cpp

@@ -216,27 +216,6 @@ inline QDebug operator<<(QDebug debug, const AppDirInfo &info)
     return debug;
 }
 
-// Determine whether the given 'ldd' output contains a Linux VDSO
-// shared object. The name of the VDSO object differs depending
-// on architecture. See "vDSO names" in the notes section of vdso(7)
-// for more information.
-static bool lddOutputContainsLinuxVDSO(const QString &lddOutput) {
-    // aarch64, arm, mips, x86_64, x86/x32
-    if (lddOutput.contains(QStringLiteral("linux-vdso.so.1"))) {
-        return true;
-    // ppc32, s390
-    } else if (lddOutput.contains(QStringLiteral("linux-vdso32.so.1"))) {
-        return true;
-    // ppc64, s390x
-    } else if (lddOutput.contains(QStringLiteral("linux-vdso64.so.1"))) {
-        return true;
-    // ia64, sh, i386
-    } else if (lddOutput.contains(QStringLiteral("linux-gate.so.1"))) {
-        return true;
-    }
-    return false;
-}
-
 bool copyFilePrintStatus(const QString &from, const QString &to)
 {
     if (QFile(to).exists()) {
@@ -399,16 +378,6 @@ LddInfo findDependencyInfo(const QString &binaryPath)
         }
     }
 
-    if ((binaryPath.contains(".so.") || binaryPath.endsWith(".so")) && (!lddOutputContainsLinuxVDSO(output))) {
-        const QRegularExpressionMatch match = regexp.match(outputLines.first());
-        if (match.hasMatch())  {
-            info.installName = match.captured(1);
-        } else {
-            LogError() << "Could not parse ldd output line:" << outputLines.first();
-        }
-        outputLines.removeFirst();
-    }
-
 /*
     FIXME: For unknown reasons, this segfaults; see https://travis-ci.org/probonopd/Labrador/builds/339803886#L1320
     if (binaryPath.contains("platformthemes")) {