--- a/src/extension/internal/pdfinput/pdf-input.cpp	2019-01-15 05:29:27.000000000 +0100
+++ b/src/extension/internal/pdfinput/pdf-input.cpp	2024-12-31 21:27:27.574557163 +0100
@@ -689,12 +689,12 @@
         //
         gchar const *poppler_datadir = g_getenv("POPPLER_DATADIR");
         if (poppler_datadir != NULL) {
-            globalParams = new GlobalParams(poppler_datadir);
+            globalParams = _POPPLER_NEW_GLOBAL_PARAMS(poppler_datadir);
         } else {
-            globalParams = new GlobalParams();
+            globalParams = _POPPLER_NEW_GLOBAL_PARAMS();
         }
 #else
-        globalParams = new GlobalParams();
+        globalParams = _POPPLER_NEW_GLOBAL_PARAMS();
 #endif // ENABLE_OSX_APP_LOCATIONS
     }
 
--- a/src/extension/internal/pdfinput/pdf-parser.cpp	2019-01-15 05:29:27.000000000 +0100
+++ b/src/extension/internal/pdfinput/pdf-parser.cpp	2024-12-31 21:30:17.185577782 +0100
@@ -272,7 +272,7 @@
     ClipHistoryEntry *save();
     ClipHistoryEntry *restore();
     GBool hasSaves() { return saved != NULL; }
-    void setClip(GfxPath *newClipPath, GfxClipType newClipType = clipNormal);
+    void setClip(_POPPLER_CONST_83 GfxPath *newClipPath, GfxClipType newClipType = clipNormal);
     GfxPath *getClipPath() { return clipPath; }
     GfxClipType getClipType() { return clipType; }
 
@@ -426,7 +426,7 @@
 	error(errInternal, -1, "Weird page contents");
     	return;
   }
-  parser = new Parser(xref, new Lexer(xref, obj), gFalse);
+  parser = new _POPPLER_NEW_PARSER(xref, obj);
   go(topLevel);
   delete parser;
   parser = NULL;
@@ -2210,7 +2210,11 @@
   }
   if (printCommands) {
     printf("  font: tag=%s name='%s' %g\n",
+#if POPPLER_CHECK_VERSION(21,11,0)
+	   font->getTag().c_str(),
+#else
 	   font->getTag()->getCString(),
+#endif
 	   font->getName() ? font->getName()->getCString() : "???",
 	   args[1].getNum());
     fflush(stdout);
@@ -2414,7 +2418,7 @@
   int wMode;
   double riseX, riseY;
   CharCode code;
-  Unicode *u = NULL;
+  Unicode _POPPLER_CONST_82 *u = NULL;
   double x, y, dx, dy, tdx, tdy;
   double originX, originY, tOriginX, tOriginY;
   double oldCTM[6], newCTM[6];
@@ -3394,7 +3398,7 @@
     }
 }
 
-void ClipHistoryEntry::setClip(GfxPath *clipPathA, GfxClipType clipTypeA) {
+void ClipHistoryEntry::setClip(_POPPLER_CONST_83 GfxPath *clipPathA, GfxClipType clipTypeA) {
     // Free previous clip path
     if (clipPath) {
         delete clipPath;
--- a/src/extension/internal/pdfinput/poppler-transition-api.h	2019-01-15 05:29:27.000000000 +0100
+++ b/src/extension/internal/pdfinput/poppler-transition-api.h	2024-12-31 21:32:58.276547132 +0100
@@ -3,6 +3,30 @@
 
 #include <glib/poppler-features.h>
 
+#if POPPLER_CHECK_VERSION(0, 83, 0)
+#define _POPPLER_CONST_83 const
+#else
+#define _POPPLER_CONST_83
+#endif
+
+#if POPPLER_CHECK_VERSION(0, 82, 0)
+#define _POPPLER_CONST_82 const
+#else
+#define _POPPLER_CONST_82
+#endif
+
+#if POPPLER_CHECK_VERSION(0, 76, 0)
+#define _POPPLER_NEW_PARSER(xref, obj) Parser(xref, obj, gFalse)
+#else
+#define _POPPLER_NEW_PARSER(xref, obj) Parser(xref, new Lexer(xref, obj), gFalse)
+#endif
+
+#if POPPLER_CHECK_VERSION(0, 83, 0)
+#define _POPPLER_NEW_GLOBAL_PARAMS(args...) std::unique_ptr<GlobalParams>(new GlobalParams(args))
+#else
+#define _POPPLER_NEW_GLOBAL_PARAMS(args...) new GlobalParams(args)
+#endif
+
 #if POPPLER_CHECK_VERSION(0, 72, 0)
 #define getCString c_str
 #endif
--- a/src/extension/internal/pdfinput/svg-builder.cpp	2019-01-15 05:29:27.000000000 +0100
+++ b/src/extension/internal/pdfinput/svg-builder.cpp	2024-12-31 21:34:24.487065888 +0100
@@ -264,10 +264,10 @@
 /**
  * \brief Generates a SVG path string from poppler's data structure
  */
-static gchar *svgInterpretPath(GfxPath *path) {
+static gchar *svgInterpretPath(_POPPLER_CONST_83 GfxPath *path) {
     Inkscape::SVG::PathString pathString;
     for (int i = 0 ; i < path->getNumSubpaths() ; ++i ) {
-        GfxSubpath *subpath = path->getSubpath(i);
+        _POPPLER_CONST_83 GfxSubpath *subpath = path->getSubpath(i);
         if (subpath->getNumPoints() > 0) {
             pathString.moveTo(subpath->getX(0), subpath->getY(0));
             int j = 1;
@@ -1379,7 +1379,7 @@
 void SvgBuilder::addChar(GfxState *state, double x, double y,
                          double dx, double dy,
                          double originX, double originY,
-                         CharCode /*code*/, int /*nBytes*/, Unicode *u, int uLen) {
+                         CharCode /*code*/, int /*nBytes*/, Unicode const *u, int uLen) {
 
 
     bool is_space = ( uLen == 1 && u[0] == 32 );
--- a/src/extension/internal/pdfinput/svg-builder.h	2019-01-15 05:29:27.000000000 +0100
+++ b/src/extension/internal/pdfinput/svg-builder.h	2024-12-31 21:34:45.897194723 +0100
@@ -141,7 +141,7 @@
     void addChar(GfxState *state, double x, double y,
                  double dx, double dy,
                  double originX, double originY,
-                 CharCode code, int nBytes, Unicode *u, int uLen);
+                 CharCode code, int nBytes, Unicode const *u, int uLen);
     void beginTextObject(GfxState *state);
     void endTextObject(GfxState *state);