diff -Naur Trilinos-trilinos-release-13-4-1_or/packages/amesos/src/Amesos_CSparse.cpp Trilinos-trilinos-release-13-4-1/packages/amesos/src/Amesos_CSparse.cpp
--- Trilinos-trilinos-release-13-4-1_or/packages/amesos/src/Amesos_CSparse.cpp  2023-05-14 12:45:09.733199042 +0200
+++ Trilinos-trilinos-release-13-4-1/packages/amesos/src/Amesos_CSparse.cpp     2023-05-14 12:45:57.463182638 +0200
@@ -26,7 +26,7 @@
 // ***********************************************************************
 // @HEADER

-#ifdef HAVE_AMESOS_CSPARSE
+//#ifdef HAVE_AMESOS_CSPARSE
 #include "Amesos_CSparse.h"
 #include "Epetra_Map.h"
 #include "Epetra_Import.h"
@@ -134,8 +134,8 @@

   if (Comm().MyPID() == 0)
   {
-    csMatrix.p = (ptrdiff_t *) malloc((SerialMatrix().NumMyRows()+1)*sizeof(ptrdiff_t));
-    csMatrix.i = (ptrdiff_t *) malloc(SerialMatrix().NumMyNonzeros()*sizeof(ptrdiff_t));
+    csMatrix.p = (int*)(ptrdiff_t *) malloc((SerialMatrix().NumMyRows()+1)*sizeof(ptrdiff_t));
+    csMatrix.i = (int*)(ptrdiff_t *) malloc(SerialMatrix().NumMyNonzeros()*sizeof(ptrdiff_t));
     csMatrix.x = (double *) malloc(SerialMatrix().NumMyNonzeros()*sizeof(double));
     csMatrix.nzmax = SerialMatrix().NumMyNonzeros();
     csMatrix.m = SerialMatrix().NumMyRows();
@@ -525,4 +525,4 @@
   AMESOS_RETURN(error);
 }

-#endif
+//#endif
diff -Naur Trilinos-trilinos-release-13-4-1_or/packages/amesos/src/Amesos_CSparse.h Trilinos-trilinos-release-13-4-1/packages/amesos/src/Amesos_CSparse.h
--- Trilinos-trilinos-release-13-4-1_or/packages/amesos/src/Amesos_CSparse.h    2023-05-14 12:45:09.733199042 +0200
+++ Trilinos-trilinos-release-13-4-1/packages/amesos/src/Amesos_CSparse.h       2023-05-14 12:45:22.143194802 +0200
@@ -28,7 +28,7 @@

 #ifndef AMESOS_CSPARSE_H
 #define AMESOS_CSPARSE_H
-#ifdef HAVE_AMESOS_CSPARSE
+//#ifdef HAVE_AMESOS_CSPARSE

 #include "Amesos_ConfigDefs.h"
 #include "Amesos_BaseSolver.h"
@@ -212,5 +212,5 @@

 };  // class Amesos_CSparse

-#endif
+//#endif
 #endif // AMESOS_CSPARSE_H