Index: README.txt
===================================================================
--- README.txt	(revision 14161)
+++ README.txt	(working copy)
@@ -36,9 +36,9 @@
 
 BUILDING ON UNIX
 
-   1. Prerequisites: Qt >= 5 and its development packages
+   1. Prerequisites: Qt >= 4.6 and its development packages
    2. Build Transmission as normal
-   3. In the qt/ directory, type "qmake qtr.pro" or "qmake-qt5 qtr.pro"
+   3. In the qt/ directory, type "qmake qtr.pro" (or "qmake-qt4 qtr.pro", or "qmake-qt5 qtr.pro")
    4. In the qt/ directory, type "make"
    5. In the qt/ directory, as root, type "INSTALL_ROOT=/usr make install"
       (Feel free to replace /usr with /usr/local or /opt or whatever)
Index: favicon.cc
===================================================================
--- favicon.cc	(revision 14161)
+++ favicon.cc	(working copy)
@@ -14,7 +14,12 @@
 #include <QNetworkAccessManager>
 #include <QNetworkReply>
 #include <QNetworkRequest>
+
+#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
+#include <QDesktopServices>
+#else
 #include <QStandardPaths>
+#endif
 
 #include "favicon.h"
 
@@ -40,7 +45,13 @@
 QString
 Favicons :: getCacheDir( )
 {
-    const QString base = QStandardPaths::writableLocation (QStandardPaths::CacheLocation);
+    const QString base =
+#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
+        QDesktopServices::storageLocation( QDesktopServices::CacheLocation );
+#else
+        QStandardPaths::writableLocation( QStandardPaths::CacheLocation );
+#endif
+
     return QDir( base ).absoluteFilePath( "favicons" );
 }
 
Index: file-tree.cc
===================================================================
--- file-tree.cc	(revision 14161)
+++ file-tree.cc	(working copy)
@@ -885,7 +885,12 @@
   for (int i=0; i<NUM_COLUMNS; ++i)
     {
       setColumnHidden (i, (i<FIRST_VISIBLE_COLUMN) || (LAST_VISIBLE_COLUMN<i));
+
+#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
+      header()->setResizeMode(i, QHeaderView::Interactive);
+#else
       header()->setSectionResizeMode(i, QHeaderView::Interactive);
+#endif
     }
 
   connect (this, SIGNAL(clicked(const QModelIndex&)),
Index: qtr.pro
===================================================================
--- qtr.pro	(revision 14161)
+++ qtr.pro	(working copy)
@@ -12,9 +12,13 @@
 man.files = transmission-qt.1
 
 CONFIG += qt thread debug link_pkgconfig
-QT += network dbus widgets
+QT += network dbus
 PKGCONFIG = fontconfig libcurl openssl libevent
 
+greaterThan(QT_MAJOR_VERSION, 4) {
+    QT += widgets
+}
+
 TRANSMISSION_TOP = ..
 
 include(config.pri)