--- poppler-0.67.0/qt4/src/ArthurOutputDev.cc.orig	2018-08-08 10:13:17.127028046 +0200
+++ poppler-0.67.0/qt4/src/ArthurOutputDev.cc	2018-08-08 11:13:37.377483041 +0200
@@ -68,7 +68,7 @@
 class SplashOutFontFileID: public SplashFontFileID {
 public:
 
-  SplashOutFontFileID(Ref *rA) { r = *rA; }
+  SplashOutFontFileID(const Ref *rA) { r = *rA; }
 
   ~SplashOutFontFileID() {}
 
--- poppler-0.67.0/qt4/src/poppler-annotation.cc.orig	2018-08-08 10:13:17.129028061 +0200
+++ poppler-0.67.0/qt4/src/poppler-annotation.cc	2018-08-08 10:44:58.038166746 +0200
@@ -534,7 +534,7 @@ QList<Annotation*> AnnotationPrivate::fi
                 MovieObject *movie = new MovieObject( movieann );
                 m->setMovie( movie );
                 // -> movieTitle
-                GooString * movietitle = movieann->getTitle();
+                const GooString * movietitle = movieann->getTitle();
                 if ( movietitle )
                     m->setMovieTitle( QString::fromLatin1( movietitle->getCString() ) );
                 break;
@@ -554,7 +554,7 @@ QList<Annotation*> AnnotationPrivate::fi
                 s->setAction( static_cast<Poppler::LinkRendition *>(popplerLink) );
 
                 // -> screenTitle
-                GooString * screentitle = screenann->getTitle();
+                const GooString * screentitle = screenann->getTitle();
                 if ( screentitle )
                     s->setScreenTitle( UnicodeParsedString( screentitle ) );
                 break;
--- poppler-0.67.0/qt4/src/poppler-document.cc.orig	2018-08-08 10:13:17.130028069 +0200
+++ poppler-0.67.0/qt4/src/poppler-document.cc	2018-08-08 11:14:58.301690615 +0200
@@ -605,7 +605,7 @@ namespace Poppler {
         if ( !outline )
             return NULL;
 
-        GooList * items = outline->getItems();
+        const GooList * items = outline->getItems();
         if ( !items || items->getLength() < 1 )
             return NULL;
 
@@ -799,7 +799,7 @@ namespace Poppler {
         return Document::NoForm; // make gcc happy
     }
 
-    QDateTime convertDate( char *dateString )
+    QDateTime convertDate( const char *dateString )
     {
         int year, mon, day, hour, min, sec, tzHours, tzMins;
         char tz;
@@ -830,6 +830,12 @@ namespace Poppler {
         return QDateTime();
     }
 
+    QDateTime convertDate( char *dateString )
+    {
+        return convertDate( (const char *) dateString );
+    }
+
+
     bool isCmsAvailable()
     {
 #if defined(USE_CMS)
--- poppler-0.67.0/qt4/src/poppler-embeddedfile.cc.orig	2018-08-08 10:13:17.130028069 +0200
+++ poppler-0.67.0/qt4/src/poppler-embeddedfile.cc	2018-08-08 10:50:42.645723179 +0200
@@ -68,13 +68,13 @@ EmbeddedFile::~EmbeddedFile()
 
 QString EmbeddedFile::name() const
 {
-	GooString *goo = m_embeddedFile->filespec->getFileName();
+	const GooString *goo = m_embeddedFile->filespec->getFileName();
 	return goo ? UnicodeParsedString(goo) : QString();
 }
 
 QString EmbeddedFile::description() const
 {
-	GooString *goo = m_embeddedFile->filespec->getDescription();
+	const GooString *goo = m_embeddedFile->filespec->getDescription();
 	return goo ? UnicodeParsedString(goo) : QString();
 }
 
@@ -85,25 +85,25 @@ int EmbeddedFile::size() const
 
 QDateTime EmbeddedFile::modDate() const
 {
-	GooString *goo = m_embeddedFile->embFile() ? m_embeddedFile->embFile()->modDate() : NULL;
+	const GooString *goo = m_embeddedFile->embFile() ? m_embeddedFile->embFile()->modDate() : NULL;
 	return goo ? convertDate(goo->getCString()) : QDateTime();
 }
 
 QDateTime EmbeddedFile::createDate() const
 {
-	GooString *goo = m_embeddedFile->embFile() ? m_embeddedFile->embFile()->createDate() : NULL;
+	const GooString *goo = m_embeddedFile->embFile() ? m_embeddedFile->embFile()->createDate() : NULL;
 	return goo ? convertDate(goo->getCString()) : QDateTime();
 }
 
 QByteArray EmbeddedFile::checksum() const
 {
-	GooString *goo = m_embeddedFile->embFile() ? m_embeddedFile->embFile()->checksum() : NULL;
+	const GooString *goo = m_embeddedFile->embFile() ? m_embeddedFile->embFile()->checksum() : NULL;
 	return goo ? QByteArray::fromRawData(goo->getCString(), goo->getLength()) : QByteArray();
 }
 
 QString EmbeddedFile::mimeType() const
 {
-	GooString *goo = m_embeddedFile->embFile() ? m_embeddedFile->embFile()->mimeType() : NULL;
+	const GooString *goo = m_embeddedFile->embFile() ? m_embeddedFile->embFile()->mimeType() : NULL;
 	return goo ? QString(goo->getCString()) : QString();
 }
 
--- poppler-0.67.0/qt4/src/poppler-form.cc.orig	2018-08-08 10:13:17.130028069 +0200
+++ poppler-0.67.0/qt4/src/poppler-form.cc	2018-08-08 10:51:46.240825862 +0200
@@ -104,7 +104,7 @@ int FormField::id() const
 QString FormField::name() const
 {
   QString name;
-  if (GooString *goo = m_formData->fm->getPartialName())
+  if (const GooString *goo = m_formData->fm->getPartialName())
   {
     name = QString::fromLatin1(goo->getCString());
   }
@@ -114,7 +114,7 @@ QString FormField::name() const
 QString FormField::fullyQualifiedName() const
 {
   QString name;
-  if (GooString *goo = m_formData->fm->getFullyQualifiedName())
+  if (const GooString *goo = m_formData->fm->getFullyQualifiedName())
   {
     name = UnicodeParsedString(goo);
   }
@@ -124,7 +124,7 @@ QString FormField::fullyQualifiedName()
 QString FormField::uiName() const
 {
   QString name;
-  if (GooString *goo = m_formData->fm->getAlternateUiName())
+  if (const GooString *goo = m_formData->fm->getAlternateUiName())
   {
     name = QString::fromLatin1(goo->getCString());
   }
@@ -271,7 +271,7 @@ FormFieldText::TextType FormFieldText::t
 
 QString FormFieldText::text() const
 {
-  GooString *goo = static_cast<FormWidgetText*>(m_formData->fm)->getContent();
+  const GooString *goo = static_cast<FormWidgetText*>(m_formData->fm)->getContent();
   return UnicodeParsedString(goo);
 }
 
--- poppler-0.67.0/qt4/src/poppler-link.cc.orig	2018-08-08 10:13:17.131028077 +0200
+++ poppler-0.67.0/qt4/src/poppler-link.cc	2018-08-08 10:59:12.395546232 +0200
@@ -232,7 +232,7 @@ class LinkMoviePrivate : public LinkPriv
 		: d( new LinkDestinationPrivate )
 	{
 		bool deleteDest = false;
-		LinkDest *ld = data.ld;
+		const LinkDest *ld = data.ld;
 		
 		if ( data.namedDest && !ld && !data.externalDest )
 		{
--- poppler-0.67.0/qt4/src/poppler-media.cc.orig	2018-08-08 10:13:17.131028077 +0200
+++ poppler-0.67.0/qt4/src/poppler-media.cc	2018-08-08 11:10:51.802056415 +0200
@@ -151,7 +151,7 @@ QSize
 MediaRendition::size() const
 {
   Q_D( const MediaRendition );
-  MediaParameters *mp = 0;
+  const MediaParameters *mp = 0;
 
   if (d->rendition->getBEParameters())
     mp = d->rendition->getBEParameters();
--- poppler-0.67.0/qt4/src/poppler-movie.cc.orig	2018-08-08 10:13:17.131028077 +0200
+++ poppler-0.67.0/qt4/src/poppler-movie.cc	2018-08-08 10:52:41.284914743 +0200
@@ -57,7 +57,7 @@ MovieObject::MovieObject( AnnotMovie *an
 	m_movieData->m_movieObj = ann->getMovie()->copy();
 	//TODO: copy poster image
 
-	MovieActivationParameters *mp = m_movieData->m_movieObj->getActivationParameters();
+	const MovieActivationParameters *mp = m_movieData->m_movieObj->getActivationParameters();
 	int width, height;
 	m_movieData->m_movieObj->getFloatingWindowSize(&width, &height);
 	m_movieData->m_size = QSize(width, height);
@@ -73,7 +73,7 @@ MovieObject::~MovieObject()
 
 QString MovieObject::url() const
 {
-	GooString * goo = m_movieData->m_movieObj->getFileName();
+	const GooString * goo = m_movieData->m_movieObj->getFileName();
 	return goo ? QString( goo->getCString() ) : QString();
 }
 
--- poppler-0.67.0/qt4/src/poppler-optcontent.cc.orig	2018-08-08 10:13:17.131028077 +0200
+++ poppler-0.67.0/qt4/src/poppler-optcontent.cc	2018-08-08 10:53:34.222000220 +0200
@@ -213,7 +213,7 @@ namespace Poppler
       } else if ( (orderItem.isArray()) && (orderItem.arrayGetLength() > 0) ) {
 	parseOrderArray(lastItem, orderItem.getArray());
       } else if ( orderItem.isString() ) {
-	GooString *label = orderItem.getString();
+	const GooString *label = orderItem.getString();
 	OptContentItem *header = new OptContentItem ( UnicodeParsedString ( label ) );
 	m_headerOptContentItems.append( header );
 	addChild( parentNode, header );
@@ -396,7 +396,7 @@ namespace Poppler
 
     QSet<OptContentItem *> changedItems;
 
-    GooList *statesList = popplerLinkOCGState->getStateList();
+    const GooList *statesList = popplerLinkOCGState->getStateList();
     for (int i = 0; i < statesList->getLength(); ++i) {
         ::LinkOCGState::StateList *stateList = (::LinkOCGState::StateList*)statesList->get(i);
 
--- poppler-0.67.0/qt4/src/poppler-page.cc.orig	2018-08-08 10:13:17.132028085 +0200
+++ poppler-0.67.0/qt4/src/poppler-page.cc	2018-08-08 10:54:22.980078936 +0200
@@ -103,7 +103,7 @@ Link* PageData::convertLinkActionToLink(
     case actionLaunch:
     {
       LinkLaunch * e = (LinkLaunch *)a;
-      GooString * p = e->getParams();
+      const GooString * p = e->getParams();
       popplerLink = new LinkExecute( linkArea, e->getFileName()->getCString(), p ? p->getCString() : 0 );
     }
     break;
--- poppler-0.67.0/qt4/src/poppler-private.cc.orig	2018-08-08 10:13:17.132028085 +0200
+++ poppler-0.67.0/qt4/src/poppler-private.cc	2018-08-08 11:03:25.964955666 +0200
@@ -73,7 +73,7 @@ namespace Debug {
         (*Debug::debugFunction)(emsg, Debug::debugClosure);
     }
 
-    QString unicodeToQString(Unicode* u, int len) {
+    QString unicodeToQString(const Unicode* u, int len) {
         if (!utf8Map)
         {
                 GooString enc("UTF-8");
@@ -98,11 +98,11 @@ namespace Debug {
         return QString::fromUtf8(convertedStr.getCString(), convertedStr.getLength());
     }
 
-    QString UnicodeParsedString(GooString *s1) {
+    QString UnicodeParsedString(const GooString *s1) {
         if ( !s1 || s1->getLength() == 0 )
             return QString();
 
-        char *cString;
+        const char *cString;
         int stringLength;
         bool deleteCString;
         if ( ( s1->getChar(0) & 0xff ) == 0xfe && ( s1->getLength() > 1 && ( s1->getChar(1) & 0xff ) == 0xff ) )
@@ -162,7 +162,7 @@ namespace Debug {
         return QStringToUnicodeGooString(dt.toUTC().toString("yyyyMMddhhmmss+00'00'"));
     }
 
-    static void linkActionToTocItem( ::LinkAction * a, DocumentData * doc, QDomElement * e )
+    static void linkActionToTocItem( const ::LinkAction * a, DocumentData * doc, QDomElement * e )
     {
         if ( !a || !e )
             return;
@@ -172,14 +172,14 @@ namespace Debug {
             case actionGoTo:
             {
                 // page number is contained/referenced in a LinkGoTo
-                LinkGoTo * g = static_cast< LinkGoTo * >( a );
-                LinkDest * destination = g->getDest();
+                const LinkGoTo * g = static_cast< const LinkGoTo * >( a );
+                const LinkDest * destination = g->getDest();
                 if ( !destination && g->getNamedDest() )
                 {
                     // no 'destination' but an internal 'named reference'. we could
                     // get the destination for the page now, but it's VERY time consuming,
                     // so better storing the reference and provide the viewport on demand
-                    GooString *s = g->getNamedDest();
+                    const GooString *s = g->getNamedDest();
                     QChar *charArray = new QChar[s->getLength()];
                     for (int i = 0; i < s->getLength(); ++i) charArray[i] = QChar(s->getCString()[i]);
                     QString aux(charArray, s->getLength());
@@ -196,14 +196,14 @@ namespace Debug {
             case actionGoToR:
             {
                 // page number is contained/referenced in a LinkGoToR
-                LinkGoToR * g = static_cast< LinkGoToR * >( a );
-                LinkDest * destination = g->getDest();
+                const LinkGoToR * g = static_cast< const LinkGoToR * >( a );
+                const LinkDest * destination = g->getDest();
                 if ( !destination && g->getNamedDest() )
                 {
                     // no 'destination' but an internal 'named reference'. we could
                     // get the destination for the page now, but it's VERY time consuming,
                     // so better storing the reference and provide the viewport on demand
-                    GooString *s = g->getNamedDest();
+                    const GooString *s = g->getNamedDest();
                     QChar *charArray = new QChar[s->getLength()];
                     for (int i = 0; i < s->getLength(); ++i) charArray[i] = QChar(s->getCString()[i]);
                     QString aux(charArray, s->getLength());
@@ -220,7 +220,7 @@ namespace Debug {
             }
             case actionURI:
             {
-                LinkURI * u = static_cast< LinkURI * >( a );
+                const LinkURI * u = static_cast< const LinkURI * >( a );
                 e->setAttribute( "DestinationURI", u->getURI()->getCString() );
             }
             default: ;
@@ -260,7 +260,7 @@ namespace Debug {
     }
 
 
-    void DocumentData::addTocChildren( QDomDocument * docSyn, QDomNode * parent, GooList * items )
+    void DocumentData::addTocChildren( QDomDocument * docSyn, QDomNode * parent, const GooList * items )
     {
         int numItems = items->getLength();
         for ( int i = 0; i < numItems; ++i )
@@ -270,7 +270,7 @@ namespace Debug {
 
             // 1. create element using outlineItem's title as tagName
             QString name;
-            Unicode * uniChar = outlineItem->getTitle();
+            const Unicode * uniChar = outlineItem->getTitle();
             int titleLength = outlineItem->getTitleLength();
             name = unicodeToQString(uniChar, titleLength);
             if ( name.isEmpty() )
@@ -280,14 +280,14 @@ namespace Debug {
             parent->appendChild( item );
 
             // 2. find the page the link refers to
-            ::LinkAction * a = outlineItem->getAction();
+            const ::LinkAction * a = outlineItem->getAction();
             linkActionToTocItem( a, this, &item );
 
             item.setAttribute( "Open", QVariant( (bool)outlineItem->isOpen() ).toString() );
 
             // 3. recursively descend over children
             outlineItem->open();
-            GooList * children = outlineItem->getKids();
+            const GooList * children = outlineItem->getKids();
             if ( children )
                 addTocChildren( docSyn, &item, children );
         }
--- poppler-0.67.0/qt4/src/poppler-private.h.orig	2018-08-08 10:13:17.132028085 +0200
+++ poppler-0.67.0/qt4/src/poppler-private.h	2018-08-08 11:00:30.836672893 +0200
@@ -54,9 +54,9 @@ class FormWidget;
 namespace Poppler {
 
     /* borrowed from kpdf */
-    QString unicodeToQString(Unicode* u, int len);
+    QString unicodeToQString(const Unicode* u, int len);
 
-    QString UnicodeParsedString(GooString *s1);
+    QString UnicodeParsedString(const GooString *s1);
 
     GooString *QStringToUnicodeGooString(const QString &s);
 
@@ -69,13 +69,13 @@ namespace Poppler {
     class LinkDestinationData
     {
         public:
-            LinkDestinationData( LinkDest *l, GooString *nd, Poppler::DocumentData *pdfdoc, bool external )
+            LinkDestinationData( const LinkDest *l, const GooString *nd, Poppler::DocumentData *pdfdoc, bool external )
              : ld(l), namedDest(nd), doc(pdfdoc), externalDest(external)
             {
             }
 
-            LinkDest *ld;
-            GooString *namedDest;
+            const LinkDest *ld;
+            const GooString *namedDest;
             Poppler::DocumentData *doc;
             bool externalDest;
     };
@@ -115,7 +115,7 @@ namespace Poppler {
 	
 	~DocumentData();
 	
-	void addTocChildren( QDomDocument * docSyn, QDomNode * parent, GooList * items );
+	void addTocChildren( QDomDocument * docSyn, QDomNode * parent, const GooList * items );
 	
 	void setPaperColor(const QColor &color)
 	{
--- poppler-0.67.0/qt4/src/poppler-qt4.h.orig	2018-08-08 10:13:17.133028093 +0200
+++ poppler-0.67.0/qt4/src/poppler-qt4.h	2018-08-08 10:29:23.807858790 +0200
@@ -1816,7 +1816,12 @@ height = dummy.height();
     /**
        Conversion from PDF date string format to QDateTime
     */
-    POPPLER_QT4_EXPORT QDateTime convertDate( char *dateString );
+    POPPLER_QT4_EXPORT Q_DECL_DEPRECATED QDateTime convertDate( char *dateString );
+
+    /**
+       Conversion from PDF date string format to QDateTime
+    */
+    POPPLER_QT4_EXPORT QDateTime convertDate( const char *dateString );
 
     /**
        Whether the color management functions are available.
--- poppler-0.67.0/qt4/src/poppler-sound.cc.orig	2018-08-08 10:13:17.133028093 +0200
+++ poppler-0.67.0/qt4/src/poppler-sound.cc	2018-08-08 11:10:31.644004477 +0200
@@ -75,7 +75,7 @@ QString SoundObject::url() const
 	if ( m_soundData->m_type != SoundObject::External )
 		return QString();
 
-	GooString * goo = m_soundData->m_soundObj->getFileName();
+	const GooString * goo = m_soundData->m_soundObj->getFileName();
 	return goo ? QString( goo->getCString() ) : QString();
 }
 
