diff -urN qt/qtbase/src/platformsupport/fontdatabases/freetype/qfontengine_ft.cpp qt2/qtbase/src/platformsupport/fontdatabases/freetype/qfontengine_ft.cpp
--- qt/qtbase/src/platformsupport/fontdatabases/freetype/qfontengine_ft.cpp	2018-06-15 09:29:31.000000000 +0200
+++ qt2/qtbase/src/platformsupport/fontdatabases/freetype/qfontengine_ft.cpp	2018-09-18 16:55:58.385475999 +0200
@@ -66,7 +66,9 @@
 #include FT_TYPE1_TABLES_H
 #include FT_GLYPH_H
 #include FT_MODULE_H
+#if FREETYPE_MAJOR >= 2 && FREETYPE_MINOR >= 3
 #include FT_LCD_FILTER_H
+#endif
 
 #if defined(FT_CONFIG_OPTIONS_H)
 #include FT_CONFIG_OPTIONS_H
@@ -777,7 +779,10 @@
     default_load_flags = FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH;
     default_hint_style = ftInitialDefaultHintStyle;
     subpixelType = Subpixel_None;
+    lcdFilterType = 0;
+#if FREETYPE_MAJOR >= 2 && FREETYPE_MINOR >= 3
     lcdFilterType = (int)((quintptr) FT_LCD_FILTER_DEFAULT);
+#endif
     defaultFormat = Format_None;
     embeddedbitmap = false;
     const QByteArray env = qgetenv("QT_NO_FT_CACHE");
@@ -1162,6 +1167,7 @@
 
     int glyph_buffer_size = 0;
     QScopedArrayPointer<uchar> glyph_buffer;
+#if FREETYPE_MAJOR >= 2 && FREETYPE_MINOR >= 3
     bool useFreetypeRenderGlyph = false;
     if (slot->format == FT_GLYPH_FORMAT_OUTLINE && (hsubpixel || vfactor != 1)) {
         err = FT_Library_SetLcdFilter(slot->library, (FT_LcdFilter)lcdFilterType);
@@ -1190,7 +1196,9 @@
             convertRGBToARGB(slot->bitmap.buffer, (uint *)glyph_buffer.data(), info.width, info.height, slot->bitmap.pitch, subpixelType != Subpixel_RGB, false);
         else if (vfactor != 1)
             convertRGBToARGB_V(slot->bitmap.buffer, (uint *)glyph_buffer.data(), info.width, info.height, slot->bitmap.pitch, subpixelType != Subpixel_VRGB, false);
-    } else {
+    } else
+#endif
+    {
     int left  = slot->metrics.horiBearingX;
     int right = slot->metrics.horiBearingX + slot->metrics.width;
     int top    = slot->metrics.horiBearingY;
@@ -1257,7 +1265,9 @@
             Q_ASSERT(antialias);
             uchar *convoluted = new uchar[bitmap_buffer_size];
             bool useLegacyLcdFilter = false;
+#if FREETYPE_MAJOR >= 2 && FREETYPE_MINOR >= 3
             useLegacyLcdFilter = (lcdFilterType == FT_LCD_FILTER_LEGACY);
+#endif
             uchar *buffer = bitmap.buffer;
             if (!useLegacyLcdFilter) {
                 convoluteBitmap(bitmap.buffer, convoluted, bitmap.width, info.height, bitmap.pitch);