--- 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
@@ -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->c_str()) : 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->c_str()) : 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->c_str(), 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->c_str()) : QString();
 }
 
--- 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->c_str() ) : QString();
 }
 
--- 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;
     };
--- 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->c_str() ) : QString();
 }