diff -uprN a/gdal-1.11.0/frmts/postgisraster/postgisraster.h b/gdal-1.11.0/frmts/postgisraster/postgisraster.h
--- a/gdal-1.11.0/frmts/postgisraster/postgisraster.h	2020-09-11 17:27:26.000000000 +0800
+++ b/gdal-1.11.0/frmts/postgisraster/postgisraster.h	2023-09-14 17:44:39.190414405 +0800
@@ -38,7 +38,7 @@
 #define POSTGISRASTER_H_INCLUDED
 
 #include "gdal_priv.h"
-#include "libpq-fe.h"
+#include "libpq/libpq-fe.h"
 #include "vrtdataset.h"
 #include "cpl_quad_tree.h"
 #include <float.h>
diff -uprN a/gdal-1.11.0/ogr/ogrsf_frmts/pg/ogr_pg.h b/gdal-1.11.0/ogr/ogrsf_frmts/pg/ogr_pg.h
--- a/gdal-1.11.0/ogr/ogrsf_frmts/pg/ogr_pg.h	2020-09-11 17:27:26.000000000 +0800
+++ b/gdal-1.11.0/ogr/ogrsf_frmts/pg/ogr_pg.h	2023-09-14 17:44:39.190414405 +0800
@@ -32,7 +32,7 @@
 #define _OGR_PG_H_INCLUDED
 
 #include "ogrsf_frmts.h"
-#include "libpq-fe.h"
+#include "libpq/libpq-fe.h"
 #include "cpl_string.h"
 
 #include "ogrpgutility.h"
diff -uprN a/gdal-1.11.0/ogr/ogrsf_frmts/pg/ogrpgutility.h b/gdal-1.11.0/ogr/ogrsf_frmts/pg/ogrpgutility.h
--- a/gdal-1.11.0/ogr/ogrsf_frmts/pg/ogrpgutility.h	2020-09-11 17:27:26.000000000 +0800
+++ b/gdal-1.11.0/ogr/ogrsf_frmts/pg/ogrpgutility.h	2023-09-14 17:44:39.190414405 +0800
@@ -30,7 +30,7 @@
 #ifndef OGRPGUTILITY_H_INCLUDED
 #define OGRPGUTILITY_H_INCLUDED
 
-#include "libpq-fe.h"
+#include "libpq/libpq-fe.h"
 
 PGresult *OGRPG_PQexec(PGconn *conn, const char *query,
                        int bMultipleCommandAllowed = FALSE);
diff -uprN a/postgis-2.4.2/configure b/postgis-2.4.2/configure
--- a/postgis-2.4.2/configure	2020-09-11 17:27:26.000000000 +0800
+++ b/postgis-2.4.2/configure	2023-09-14 17:44:39.193414430 +0800
@@ -13515,7 +13515,11 @@ if test "x$LIBLWGEOM_ONLY" = "xno"; then
   	  	  	  	  	PGSQL_MINOR_VERSION=0
   fi
 
-  POSTGIS_PGSQL_VERSION="$PGSQL_MAJOR_VERSION$PGSQL_MINOR_VERSION"
+  POSTGIS_PGSQL_VERSION="92"
+  PGXS_ALIAS=`$PG_CONFIG --version | awk '{print $1}'`
+  if test "$PGXS_ALIAS" = "openGauss"; then
+      POSTGIS_PGSQL_VERSION="92"
+  fi
 
   PGSQL_PKGLIBDIR=`"$PG_CONFIG" --pkglibdir`
   PGSQL_LIBDIR=`"$PG_CONFIG" --libdir`
diff -uprN a/postgis-2.4.2/postgis--2.4.2.sql b/postgis-2.4.2/postgis--2.4.2.sql
--- a/postgis-2.4.2/postgis--2.4.2.sql	2020-09-11 17:27:26.000000000 +0800
+++ b/postgis-2.4.2/postgis--2.4.2.sql	2023-09-14 17:44:39.204414523 +0800
@@ -1720,7 +1720,7 @@ CREATE TABLE spatial_ref_sys (
 	 auth_srid integer,
 	 srtext varchar(2048),
 	 proj4text varchar(2048)
-)DISTRIBUTE BY REPLICATION;
+);
 
 
 -----------------------------------------------------------------------
@@ -2303,88 +2303,6 @@ END;
 $$
 LANGUAGE 'plpgsql' VOLATILE;
 
------------------------------------------------------------------------
--- DROPGEOMETRYTABLE
---   <catalogue>, <schema>, <table>
------------------------------------------------------------------------
---
--- Drop a table and all its references in geometry_columns
---
------------------------------------------------------------------------
-CREATE OR REPLACE FUNCTION DropGeometryTable(catalog_name varchar, schema_name varchar, table_name varchar)
-	RETURNS text	
-	AS
-$$
-DECLARE
-	real_schema name;
-	okay boolean;
-BEGIN
-
-	-- Find, check or fix schema_name
-	IF ( schema_name IS NOT Null ) THEN
-		okay = false;
-
-		FOR myrec IN SELECT nspname FROM pg_namespace WHERE text(nspname) = schema_name LOOP
-			okay := true;
-		END LOOP;
-
-		IF ( okay <>  true ) THEN
-			RAISE EXCEPTION 'Invalid schema name';
-			RETURN false;
-		ELSE
-			real_schema = schema_name;
-		END IF;
-	ELSE
-		SELECT current_schema() into real_schema;
-	END IF;
-	
-	-- Find out if the column is in the geometry_columns table
-	okay = false;
-	FOR myrec IN SELECT * from geometry_columns where f_table_schema = text(real_schema) and f_table_name = table_name LOOP
-		okay := true;
-	END LOOP;
-	IF (okay <> true) THEN
-		RAISE EXCEPTION 'table %.% not found in geometry_columns',real_schema,table_name;
-		RETURN false;
-	END IF;
-
-	-- TODO: Should we warn if table doesn't exist probably instead just saying dropped
-	-- Remove table
-	EXECUTE 'DROP TABLE  '
-		|| quote_ident(real_schema) || '.' ||
-		quote_ident(table_name) || ' RESTRICT';
-	RETURN
-		real_schema || '.' ||
-		table_name ||' dropped.';
-
-END;
-$$
-LANGUAGE 'plpgsql' VOLATILE;
-
------------------------------------------------------------------------
--- DROPGEOMETRYTABLE
---   <schema>, <table>
------------------------------------------------------------------------
---
--- Drop a table and all its references in geometry_columns
---
------------------------------------------------------------------------
-CREATE OR REPLACE FUNCTION DropGeometryTable(schema_name varchar, table_name varchar) RETURNS text AS
-$$ SELECT DropGeometryTable('',$1,$2) $$
-LANGUAGE 'sql' VOLATILE;
-
------------------------------------------------------------------------
--- DROPGEOMETRYTABLE
---   <table>
------------------------------------------------------------------------
---
--- Drop a table and all its references in geometry_columns
--- For PG>=73 use current_schema()
---
------------------------------------------------------------------------
-CREATE OR REPLACE FUNCTION DropGeometryTable(table_name varchar) RETURNS text AS
-$$ SELECT DropGeometryTable('','',$1) $$
-LANGUAGE 'sql' VOLATILE;
 
 -----------------------------------------------------------------------
 -- UPDATEGEOMETRYSRID
@@ -5969,6 +5887,92 @@ CREATE OR REPLACE RULE geometry_columns_
         DO INSTEAD NOTHING;
 
 
+-----------------------------------------------------------------------
+-- DROPGEOMETRYTABLE
+--   <catalogue>, <schema>, <table>
+-----------------------------------------------------------------------
+--
+-- Drop a table and all its references in geometry_columns
+--
+-----------------------------------------------------------------------
+CREATE OR REPLACE FUNCTION DropGeometryTable(catalog_name varchar, schema_name varchar, table_name varchar)
+	RETURNS text	
+	AS
+$$
+DECLARE
+	real_schema name;
+	okay boolean;
+BEGIN
+
+	-- Find, check or fix schema_name
+	IF ( schema_name IS NOT Null ) THEN
+		okay = false;
+
+		FOR myrec IN SELECT nspname FROM pg_namespace WHERE text(nspname) = schema_name LOOP
+			okay := true;
+		END LOOP;
+
+		IF ( okay <>  true ) THEN
+			RAISE EXCEPTION 'Invalid schema name';
+			RETURN false;
+		ELSE
+			real_schema = schema_name;
+		END IF;
+	ELSE
+		SELECT current_schema() into real_schema;
+	END IF;
+	
+	-- Find out if the column is in the geometry_columns table
+	okay = false;
+	FOR myrec IN SELECT * from geometry_columns where f_table_schema = text(real_schema) and f_table_name = table_name LOOP
+		okay := true;
+	END LOOP;
+	IF (okay <> true) THEN
+		RAISE EXCEPTION 'table %.% not found in geometry_columns',real_schema,table_name;
+		RETURN false;
+	END IF;
+
+	-- TODO: Should we warn if table doesn't exist probably instead just saying dropped
+	-- Remove table
+	EXECUTE 'DROP TABLE  '
+		|| quote_ident(real_schema) || '.' ||
+		quote_ident(table_name) || ' RESTRICT';
+	RETURN
+		real_schema || '.' ||
+		table_name ||' dropped.';
+
+END;
+$$
+LANGUAGE 'plpgsql' VOLATILE;
+
+-----------------------------------------------------------------------
+-- DROPGEOMETRYTABLE
+--   <table>
+-----------------------------------------------------------------------
+--
+-- Drop a table and all its references in geometry_columns
+-- For PG>=73 use current_schema()
+--
+-----------------------------------------------------------------------
+CREATE OR REPLACE FUNCTION DropGeometryTable(table_name varchar) RETURNS text AS
+$$ SELECT DropGeometryTable('','',$1) $$
+LANGUAGE 'sql' VOLATILE;
+
+
+-----------------------------------------------------------------------
+-- DROPGEOMETRYTABLE
+--   <schema>, <table>
+-----------------------------------------------------------------------
+--
+-- Drop a table and all its references in geometry_columns
+--
+-----------------------------------------------------------------------
+CREATE OR REPLACE FUNCTION DropGeometryTable(schema_name varchar, table_name varchar) RETURNS text AS
+$$ SELECT DropGeometryTable('',$1,$2) $$
+LANGUAGE 'sql' VOLATILE;
+
+
+
 ---------------------------------------------------------------
 -- 3D-functions
 ---------------------------------------------------------------
diff -uprN a/postgis-2.4.2/postgis_raster--2.4.2.sql b/postgis-2.4.2/postgis_raster--2.4.2.sql
--- a/postgis-2.4.2/postgis_raster--2.4.2.sql	2020-09-11 17:27:26.000000000 +0800
+++ b/postgis-2.4.2/postgis_raster--2.4.2.sql	2023-09-14 17:46:32.729369686 +0800
@@ -52,10 +52,11 @@ CREATE OR REPLACE FUNCTION raster_out(ra
 -- Availability: 2.0.0
 CREATE TYPE raster (
     alignment = double,
-    internallength = variable,
+    internallength = 8,
+    passedbyvalue = true,
     input = raster_in,
     output = raster_out,
-    storage = extended
+    storage = plain
 );
 
 ------------------------------------------------------------------------------
diff -uprN a/postgis-2.4.2/postgis_svn_revision.h b/postgis-2.4.2/postgis_svn_revision.h
--- a/postgis-2.4.2/postgis_svn_revision.h	2020-09-11 17:27:26.000000000 +0800
+++ b/postgis-2.4.2/postgis_svn_revision.h	2023-09-14 17:44:39.206414540 +0800
@@ -1 +1 @@
-#define POSTGIS_SVN_REVISION "2.1.1"
+#define POSTGIS_SVN_REVISION '2.1.1'
diff -uprN a/postgis-2.4.2/raster/rt_pg/rtpostgis.c b/postgis-2.4.2/raster/rt_pg/rtpostgis.c
--- a/postgis-2.4.2/raster/rt_pg/rtpostgis.c	2020-09-11 17:27:26.000000000 +0800
+++ b/postgis-2.4.2/raster/rt_pg/rtpostgis.c	2023-09-14 17:44:39.206414540 +0800
@@ -135,7 +135,7 @@
 //#include "utils/memutils.h"
 
 #include "extension_dependency.h"
-
+#include "utils/memutils.h"
 #include "../../postgis_config.h"
 #include "lwgeom_pg.h"
 
@@ -436,6 +436,7 @@ _PG_init_gdal(void) {
 	 * Change to context for memory allocation calls like palloc() in the
 	 * extension initialization routine
 	 */
+        MemoryContextUnSeal(TopMemoryContext);
 	old_context = MemoryContextSwitchTo(TopMemoryContext);
 
 	/*
@@ -582,6 +583,7 @@ _PG_init_gdal(void) {
 
 	inited_gdal = true;
 	/* Revert back to old context */
+        MemoryContextSeal(TopMemoryContext);
 	MemoryContextSwitchTo(old_context);
 }
 
diff -uprN a/postgis-2.4.2/topology/Makefile.in b/postgis-2.4.2/topology/Makefile.in
--- a/postgis-2.4.2/topology/Makefile.in	2020-09-11 17:27:26.000000000 +0800
+++ b/postgis-2.4.2/topology/Makefile.in	2023-09-14 17:44:39.206414540 +0800
@@ -64,6 +64,7 @@ PGXS := @PGXS@
 # http://www.postgresql.org/message-id/CAB7nPqTsR5o3g-fBi6jbsVdhfPiLFWQ_0cGU5=94Rv_8W3qvFA@mail.gmail.com
 NO_TEMP_INSTALL=yes
 include $(PGXS)
+CFLAGS += -fpermissive
 
 # Set PERL _after_ the include of PGXS
 PERL=@PERL@
diff -uprN a/postgis-2.4.2/topology/postgis_topology.c b/postgis-2.4.2/topology/postgis_topology.c
--- a/postgis-2.4.2/topology/postgis_topology.c	2020-09-11 17:27:26.000000000 +0800
+++ b/postgis-2.4.2/topology/postgis_topology.c	2023-09-14 17:44:39.207414548 +0800
@@ -22,6 +22,7 @@
 #include "funcapi.h" /* for FuncCallContext */
 #include "executor/spi.h" /* this is what you need to work with SPI */
 #include "inttypes.h" /* for PRId64 */
+#include "utils/palloc.h"
 
 #include "../postgis_config.h"
 
@@ -965,7 +966,7 @@ cb_getEdgeByFace(const LWT_BE_TOPOLOGY*
   POSTGIS_DEBUGF(1, "data_changed is %d", topo->be_data->data_changed);
 
   spi_result = SPI_execute_with_args(sql->data, nargs, argtypes, values, NULL,
-                                     !topo->be_data->data_changed, 0);
+                                     !topo->be_data->data_changed, 0, NULL);
   pfree(array_ids); /* not needed anymore */
   if ( gser ) pfree(gser); /* not needed anymore */
   MemoryContextSwitchTo( oldcontext ); /* switch back */
@@ -2557,7 +2558,7 @@ cb_getFaceContainingPoint( const LWT_BE_
   values[0] = PointerGetDatum(pts);
   argtypes[0] = topo->geometryOID;
   spi_result = SPI_execute_with_args(sql->data, 1, argtypes, values, NULL,
-                                     !topo->be_data->data_changed, 1);
+                                     !topo->be_data->data_changed, 1, NULL);
   MemoryContextSwitchTo( oldcontext ); /* switch back */
   pfree(pts); /* not needed anymore */
   if ( spi_result != SPI_OK_SELECT ) {
@@ -2958,7 +2959,7 @@ _PG_init(void)
 
   /* Switch to the top memory context so that the backend interface
    * is valid for the whole backend lifetime */
-  old_context = MemoryContextSwitchTo( TopMemoryContext );
+  old_context = MemoryContextSwitchTo(SESS_GET_MEM_CXT_GROUP(MEMORY_CONTEXT_EXECUTOR));
 
   /* initialize backend data */
   be_data.data_changed = false;
@@ -2992,7 +2993,7 @@ _PG_fini(void)
 }
 
 /*  ST_ModEdgeSplit(atopology, anedge, apoint) */
-Datum ST_ModEdgeSplit(PG_FUNCTION_ARGS);
+extern "C" Datum ST_ModEdgeSplit(PG_FUNCTION_ARGS);
 PG_FUNCTION_INFO_V1(ST_ModEdgeSplit);
 Datum ST_ModEdgeSplit(PG_FUNCTION_ARGS)
 {
@@ -3057,7 +3058,7 @@ Datum ST_ModEdgeSplit(PG_FUNCTION_ARGS)
 }
 
 /*  ST_NewEdgesSplit(atopology, anedge, apoint) */
-Datum ST_NewEdgesSplit(PG_FUNCTION_ARGS);
+extern "C" Datum ST_NewEdgesSplit(PG_FUNCTION_ARGS);
 PG_FUNCTION_INFO_V1(ST_NewEdgesSplit);
 Datum ST_NewEdgesSplit(PG_FUNCTION_ARGS)
 {
@@ -3122,7 +3123,7 @@ Datum ST_NewEdgesSplit(PG_FUNCTION_ARGS)
 }
 
 /*  ST_AddIsoNode(atopology, aface, apoint) */
-Datum ST_AddIsoNode(PG_FUNCTION_ARGS);
+extern "C" Datum ST_AddIsoNode(PG_FUNCTION_ARGS);
 PG_FUNCTION_INFO_V1(ST_AddIsoNode);
 Datum ST_AddIsoNode(PG_FUNCTION_ARGS)
 {
@@ -3198,7 +3199,7 @@ Datum ST_AddIsoNode(PG_FUNCTION_ARGS)
 }
 
 /*  ST_AddIsoEdge(atopology, anode, anothernode, acurve) */
-Datum ST_AddIsoEdge(PG_FUNCTION_ARGS);
+extern "C" Datum ST_AddIsoEdge(PG_FUNCTION_ARGS);
 PG_FUNCTION_INFO_V1(ST_AddIsoEdge);
 Datum ST_AddIsoEdge(PG_FUNCTION_ARGS)
 {
@@ -3271,7 +3272,7 @@ Datum ST_AddIsoEdge(PG_FUNCTION_ARGS)
 }
 
 /*  ST_AddEdgeModFace(atopology, snode, enode, line) */
-Datum ST_AddEdgeModFace(PG_FUNCTION_ARGS);
+extern "C" Datum ST_AddEdgeModFace(PG_FUNCTION_ARGS);
 PG_FUNCTION_INFO_V1(ST_AddEdgeModFace);
 Datum ST_AddEdgeModFace(PG_FUNCTION_ARGS)
 {
@@ -3337,7 +3338,7 @@ Datum ST_AddEdgeModFace(PG_FUNCTION_ARGS
 }
 
 /*  ST_AddEdgeNewFaces(atopology, snode, enode, line) */
-Datum ST_AddEdgeNewFaces(PG_FUNCTION_ARGS);
+extern "C" Datum ST_AddEdgeNewFaces(PG_FUNCTION_ARGS);
 PG_FUNCTION_INFO_V1(ST_AddEdgeNewFaces);
 Datum ST_AddEdgeNewFaces(PG_FUNCTION_ARGS)
 {
@@ -3403,7 +3404,7 @@ Datum ST_AddEdgeNewFaces(PG_FUNCTION_ARG
 }
 
 /* ST_GetFaceGeometry(atopology, aface) */
-Datum ST_GetFaceGeometry(PG_FUNCTION_ARGS);
+extern "C" Datum ST_GetFaceGeometry(PG_FUNCTION_ARGS);
 PG_FUNCTION_INFO_V1(ST_GetFaceGeometry);
 Datum ST_GetFaceGeometry(PG_FUNCTION_ARGS)
 {
@@ -3470,7 +3471,7 @@ typedef struct FACEEDGESSTATE
 FACEEDGESSTATE;
 
 /* ST_GetFaceEdges(atopology, aface) */
-Datum ST_GetFaceEdges(PG_FUNCTION_ARGS);
+extern "C" Datum ST_GetFaceEdges(PG_FUNCTION_ARGS);
 PG_FUNCTION_INFO_V1(ST_GetFaceEdges);
 Datum ST_GetFaceEdges(PG_FUNCTION_ARGS)
 {
@@ -3596,7 +3597,7 @@ Datum ST_GetFaceEdges(PG_FUNCTION_ARGS)
 }
 
 /*  ST_ChangeEdgeGeom(atopology, anedge, acurve) */
-Datum ST_ChangeEdgeGeom(PG_FUNCTION_ARGS);
+extern "C" Datum ST_ChangeEdgeGeom(PG_FUNCTION_ARGS);
 PG_FUNCTION_INFO_V1(ST_ChangeEdgeGeom);
 Datum ST_ChangeEdgeGeom(PG_FUNCTION_ARGS)
 {
@@ -3667,7 +3668,7 @@ Datum ST_ChangeEdgeGeom(PG_FUNCTION_ARGS
 }
 
 /*  ST_RemoveIsoNode(atopology, anode) */
-Datum ST_RemoveIsoNode(PG_FUNCTION_ARGS);
+extern "C" Datum ST_RemoveIsoNode(PG_FUNCTION_ARGS);
 PG_FUNCTION_INFO_V1(ST_RemoveIsoNode);
 Datum ST_RemoveIsoNode(PG_FUNCTION_ARGS)
 {
@@ -3727,7 +3728,7 @@ Datum ST_RemoveIsoNode(PG_FUNCTION_ARGS)
 }
 
 /*  ST_RemIsoEdge(atopology, anedge) */
-Datum ST_RemIsoEdge(PG_FUNCTION_ARGS);
+extern "C" Datum ST_RemIsoEdge(PG_FUNCTION_ARGS);
 PG_FUNCTION_INFO_V1(ST_RemIsoEdge);
 Datum ST_RemIsoEdge(PG_FUNCTION_ARGS)
 {
@@ -3787,7 +3788,7 @@ Datum ST_RemIsoEdge(PG_FUNCTION_ARGS)
 }
 
 /*  ST_MoveIsoNode(atopology, anode, apoint) */
-Datum ST_MoveIsoNode(PG_FUNCTION_ARGS);
+extern "C" Datum ST_MoveIsoNode(PG_FUNCTION_ARGS);
 PG_FUNCTION_INFO_V1(ST_MoveIsoNode);
 Datum ST_MoveIsoNode(PG_FUNCTION_ARGS)
 {
@@ -3871,7 +3872,7 @@ Datum ST_MoveIsoNode(PG_FUNCTION_ARGS)
 }
 
 /*  ST_RemEdgeModFace(atopology, anedge) */
-Datum ST_RemEdgeModFace(PG_FUNCTION_ARGS);
+extern "C" Datum ST_RemEdgeModFace(PG_FUNCTION_ARGS);
 PG_FUNCTION_INFO_V1(ST_RemEdgeModFace);
 Datum ST_RemEdgeModFace(PG_FUNCTION_ARGS)
 {
@@ -3922,7 +3923,7 @@ Datum ST_RemEdgeModFace(PG_FUNCTION_ARGS
 }
 
 /*  ST_RemEdgeNewFace(atopology, anedge) */
-Datum ST_RemEdgeNewFace(PG_FUNCTION_ARGS);
+extern "C" Datum ST_RemEdgeNewFace(PG_FUNCTION_ARGS);
 PG_FUNCTION_INFO_V1(ST_RemEdgeNewFace);
 Datum ST_RemEdgeNewFace(PG_FUNCTION_ARGS)
 {
@@ -3971,7 +3972,7 @@ Datum ST_RemEdgeNewFace(PG_FUNCTION_ARGS
 }
 
 /*  ST_ModEdgeHeal(atopology, anedge, anotheredge) */
-Datum ST_ModEdgeHeal(PG_FUNCTION_ARGS);
+extern "C" Datum ST_ModEdgeHeal(PG_FUNCTION_ARGS);
 PG_FUNCTION_INFO_V1(ST_ModEdgeHeal);
 Datum ST_ModEdgeHeal(PG_FUNCTION_ARGS)
 {
@@ -4021,7 +4022,7 @@ Datum ST_ModEdgeHeal(PG_FUNCTION_ARGS)
 }
 
 /*  ST_NewEdgeHeal(atopology, anedge, anotheredge) */
-Datum ST_NewEdgeHeal(PG_FUNCTION_ARGS);
+extern "C" Datum ST_NewEdgeHeal(PG_FUNCTION_ARGS);
 PG_FUNCTION_INFO_V1(ST_NewEdgeHeal);
 Datum ST_NewEdgeHeal(PG_FUNCTION_ARGS)
 {
@@ -4071,7 +4072,7 @@ Datum ST_NewEdgeHeal(PG_FUNCTION_ARGS)
 }
 
 /*  GetNodeByPoint(atopology, point, tolerance) */
-Datum GetNodeByPoint(PG_FUNCTION_ARGS);
+extern "C" extern "C" Datum GetNodeByPoint(PG_FUNCTION_ARGS);
 PG_FUNCTION_INFO_V1(GetNodeByPoint);
 Datum GetNodeByPoint(PG_FUNCTION_ARGS)
 {
@@ -4137,7 +4138,7 @@ Datum GetNodeByPoint(PG_FUNCTION_ARGS)
 }
 
 /*  GetEdgeByPoint(atopology, point, tolerance) */
-Datum GetEdgeByPoint(PG_FUNCTION_ARGS);
+extern "C" Datum GetEdgeByPoint(PG_FUNCTION_ARGS);
 PG_FUNCTION_INFO_V1(GetEdgeByPoint);
 Datum GetEdgeByPoint(PG_FUNCTION_ARGS)
 {
@@ -4203,7 +4204,7 @@ Datum GetEdgeByPoint(PG_FUNCTION_ARGS)
 }
 
 /*  GetFaceByPoint(atopology, point, tolerance) */
-Datum GetFaceByPoint(PG_FUNCTION_ARGS);
+extern "C" Datum GetFaceByPoint(PG_FUNCTION_ARGS);
 PG_FUNCTION_INFO_V1(GetFaceByPoint);
 Datum GetFaceByPoint(PG_FUNCTION_ARGS)
 {
@@ -4269,7 +4270,7 @@ Datum GetFaceByPoint(PG_FUNCTION_ARGS)
 }
 
 /*  TopoGeo_AddPoint(atopology, point, tolerance) */
-Datum TopoGeo_AddPoint(PG_FUNCTION_ARGS);
+extern "C" Datum TopoGeo_AddPoint(PG_FUNCTION_ARGS);
 PG_FUNCTION_INFO_V1(TopoGeo_AddPoint);
 Datum TopoGeo_AddPoint(PG_FUNCTION_ARGS)
 {
@@ -4343,7 +4344,7 @@ Datum TopoGeo_AddPoint(PG_FUNCTION_ARGS)
 }
 
 /*  TopoGeo_AddLinestring(atopology, point, tolerance) */
-Datum TopoGeo_AddLinestring(PG_FUNCTION_ARGS);
+extern "C" Datum TopoGeo_AddLinestring(PG_FUNCTION_ARGS);
 PG_FUNCTION_INFO_V1(TopoGeo_AddLinestring);
 Datum TopoGeo_AddLinestring(PG_FUNCTION_ARGS)
 {
@@ -4467,7 +4468,7 @@ Datum TopoGeo_AddLinestring(PG_FUNCTION_
 }
 
 /*  TopoGeo_AddPolygon(atopology, poly, tolerance) */
-Datum TopoGeo_AddPolygon(PG_FUNCTION_ARGS);
+extern "C" Datum TopoGeo_AddPolygon(PG_FUNCTION_ARGS);
 PG_FUNCTION_INFO_V1(TopoGeo_AddPolygon);
 Datum TopoGeo_AddPolygon(PG_FUNCTION_ARGS)
 {
diff -uprN a/postgis-2.4.2/topology/sql/topogeometry/totopogeom.sql.in b/postgis-2.4.2/topology/sql/topogeometry/totopogeom.sql.in
--- a/postgis-2.4.2/topology/sql/topogeometry/totopogeom.sql.in	2020-09-11 17:27:26.000000000 +0800
+++ b/postgis-2.4.2/topology/sql/topogeometry/totopogeom.sql.in	2023-09-14 17:44:39.207414548 +0800
@@ -199,7 +199,7 @@ BEGIN
         'Layer "%" of topology "%" is %, cannot hold a collection feature.',
         layer_info.layer_id, topology_info.name, layer_info.typename;
     END IF;
-    tg.type := 4;
+    tg.type_geo := 4;
   ELSIF typ = 'POINT' OR typ = 'MULTIPOINT' THEN -- puntal
     --  A point can go in puntal or collection layer
     IF layer_info.feature_type != 4 and layer_info.feature_type != 1 THEN
@@ -207,7 +207,7 @@ BEGIN
         'Layer "%" of topology "%" is %, cannot hold a puntal feature.',
         layer_info.layer_id, topology_info.name, layer_info.typename;
     END IF;
-    tg.type := 1;
+    tg.type_geo := 1;
   ELSIF typ = 'LINESTRING' or typ = 'MULTILINESTRING' THEN -- lineal
     --  A line can go in lineal or collection layer
     IF layer_info.feature_type != 4 and layer_info.feature_type != 2 THEN
@@ -215,7 +215,7 @@ BEGIN
         'Layer "%" of topology "%" is %, cannot hold a lineal feature.',
         layer_info.layer_id, topology_info.name, layer_info.typename;
     END IF;
-    tg.type := 2;
+    tg.type_geo := 2;
   ELSIF typ = 'POLYGON' OR typ = 'MULTIPOLYGON' THEN -- areal
     --  An area can go in areal or collection layer
     IF layer_info.feature_type != 4 and layer_info.feature_type != 3 THEN
@@ -223,7 +223,7 @@ BEGIN
         'Layer "%" of topology "%" is %, cannot hold an areal feature.',
         layer_info.layer_id, topology_info.name, layer_info.typename;
     END IF;
-    tg.type := 3;
+    tg.type_geo := 3;
   ELSE
       -- Should never happen
       RAISE EXCEPTION
diff -uprN a/postgis-2.4.2/topology/sql/topogeometry/type.sql.in b/postgis-2.4.2/topology/sql/topogeometry/type.sql.in
--- a/postgis-2.4.2/topology/sql/topogeometry/type.sql.in	2020-09-11 17:27:26.000000000 +0800
+++ b/postgis-2.4.2/topology/sql/topogeometry/type.sql.in	2023-09-14 17:44:39.207414548 +0800
@@ -24,10 +24,10 @@ CREATE OR REPLACE FUNCTION topology.Geom
 AS
 $$
 	SELECT CASE
-		WHEN type($1) = 1 THEN 'MULTIPOINT'
-		WHEN type($1) = 2 THEN 'MULTILINESTRING'
-		WHEN type($1) = 3 THEN 'MULTIPOLYGON'
-		WHEN type($1) = 4 THEN 'GEOMETRYCOLLECTION'
+		WHEN type_geo($1) = 1 THEN 'MULTIPOINT'
+		WHEN type_geo($1) = 2 THEN 'MULTILINESTRING'
+		WHEN type_geo($1) = 3 THEN 'MULTIPOLYGON'
+		WHEN type_geo($1) = 4 THEN 'GEOMETRYCOLLECTION'
 		ELSE 'UNEXPECTED'
 		END;
 $$
@@ -48,10 +48,10 @@ CREATE OR REPLACE FUNCTION topology.ST_G
 AS
 $$
 	SELECT CASE
-		WHEN type($1) = 1 THEN 'ST_MultiPoint'
-		WHEN type($1) = 2 THEN 'ST_MultiLinestring'
-		WHEN type($1) = 3 THEN 'ST_MultiPolygon'
-		WHEN type($1) = 4 THEN 'ST_GeometryCollection'
+		WHEN type_geo($1) = 1 THEN 'ST_MultiPoint'
+		WHEN type_geo($1) = 2 THEN 'ST_MultiLinestring'
+		WHEN type_geo($1) = 3 THEN 'ST_MultiPolygon'
+		WHEN type_geo($1) = 4 THEN 'ST_GeometryCollection'
 		ELSE 'ST_Unexpected'
 		END;
 $$
diff -uprN a/postgis-2.4.2/topology/topology.sql.in b/postgis-2.4.2/topology/topology.sql.in
--- a/postgis-2.4.2/topology/topology.sql.in	2020-09-11 17:27:26.000000000 +0800
+++ b/postgis-2.4.2/topology/topology.sql.in	2023-09-14 17:44:39.208414557 +0800
@@ -340,7 +340,7 @@ CREATE TYPE topology.TopoGeometry AS (
   topology_id integer,
   layer_id integer,
   id integer,
-  type integer -- 1: [multi]point, 2: [multi]line,
+  type_geo integer -- 1: [multi]point, 2: [multi]line,
                -- 3: [multi]polygon, 4: collection
 );
 
@@ -943,7 +943,7 @@ BEGIN
 
   -- Set layer id and type in return object
   ret.layer_id = layer_id;
-  ret.type = tg_type;
+  ret.type_geo = tg_type;
 
   --
   -- Get new TopoGeo id from sequence