Bootstrap: remove QDirListing/QDirIterator

Bootstrapped tools don't usually need to list directories; they should
operate on file lists passed to it by the build system instead.

This may deserve a QT_FEATURE.

Change-Id: I01ec3c774d9943adb903fffd17b7ecfba2702fc5
Reviewed-by: Ahmad Samir <a.samirh78@gmail.com>

src/corelib/io/qabstractfileengine.cpp

@@ -597,9 +597,15 @@ bool QAbstractFileEngine::isRelativePath() const
 QStringList QAbstractFileEngine::entryList(QDir::Filters filters, const QStringList &filterNames) const
 {
     QStringList ret;
+#ifdef QT_BOOTSTRAPPED
+    Q_UNUSED(filters);
+    Q_UNUSED(filterNames);
+    Q_UNREACHABLE_RETURN(ret);
+#else
     for (const auto &dirEntry : QDirListing(fileName(), filterNames, filters))
         ret.emplace_back(dirEntry.fileName());
     return ret;
+#endif
 }
 
 /*!

src/corelib/io/qdir.cpp

@@ -1294,6 +1294,7 @@ QDir::SortFlags QDir::sorting() const
     after the directories, again in reverse order.
 */
 
+#ifndef QT_BOOTSTRAPPED
 /*!
     Sets the sort order used by entryList() and entryInfoList().
 
@@ -1478,6 +1479,7 @@ QFileInfoList QDir::entryInfoList(const QStringList &nameFilters, Filters filter
     d->sortFileList(sort, l, nullptr, &ret);
     return ret;
 }
+#endif // !QT_BOOTSTRAPPED
 
 /*!
     Creates a sub-directory called \a dirName.
@@ -1614,6 +1616,7 @@ bool QDir::rmpath(const QString &dirPath) const
     return d->fileEngine->rmdir(fn, true);
 }
 
+#ifndef QT_BOOTSTRAPPED
 /*!
     \since 5.0
     Removes the directory, including all its contents.
@@ -1666,6 +1669,7 @@ bool QDir::removeRecursively()
 
     return success;
 }
+#endif // !QT_BOOTSTRAPPED
 
 /*!
     Returns \c true if the directory is readable \e and we can open files
@@ -1948,6 +1952,7 @@ bool QDir::exists(const QString &name) const
     return QFileInfo::exists(filePath(name));
 }
 
+#ifndef QT_BOOTSTRAPPED
 /*!
     Returns whether the directory is empty.
 
@@ -1967,6 +1972,7 @@ bool QDir::isEmpty(Filters filters) const
     QDirListing dirList(d->dirEntry.filePath(), d->nameFilters, filters);
     return dirList.cbegin() == dirList.cend();
 }
+#endif // !QT_BOOTSTRAPPED
 
 /*!
     Returns a list of the root directories on this system.

src/tools/bootstrap/CMakeLists.txt

@@ -25,7 +25,6 @@ qt_internal_extend_target(Bootstrap
         ../../corelib/io/qbuffer.cpp
         ../../corelib/io/qdebug.cpp
         ../../corelib/io/qdir.cpp
-        ../../corelib/io/qdirlisting.cpp
         ../../corelib/io/qfile.cpp
         ../../corelib/io/qfiledevice.cpp
         ../../corelib/io/qfileinfo.cpp