diff --git a/src/ASPHERE/compute_erotate_asphere.h b/src/ASPHERE/compute_erotate_asphere.h
index 0805770bb6..895da694b2 100644
--- a/src/ASPHERE/compute_erotate_asphere.h
+++ b/src/ASPHERE/compute_erotate_asphere.h
@@ -27,8 +27,8 @@ namespace LAMMPS_NS {
 class ComputeERotateAsphere : public Compute {
  public:
   ComputeERotateAsphere(class LAMMPS *, int, char **);
-  void init();
-  double compute_scalar();
+  void init() override;
+  double compute_scalar() override;
 
  private:
   double pfactor;
diff --git a/src/ASPHERE/compute_temp_asphere.h b/src/ASPHERE/compute_temp_asphere.h
index 18c0768fd0..f479459728 100644
--- a/src/ASPHERE/compute_temp_asphere.h
+++ b/src/ASPHERE/compute_temp_asphere.h
@@ -27,16 +27,16 @@ namespace LAMMPS_NS {
 class ComputeTempAsphere : public Compute {
  public:
   ComputeTempAsphere(class LAMMPS *, int, char **);
-  ~ComputeTempAsphere();
-  void init();
-  void setup();
-  double compute_scalar();
-  void compute_vector();
+  ~ComputeTempAsphere() override;
+  void init() override;
+  void setup() override;
+  double compute_scalar() override;
+  void compute_vector() override;
 
-  void remove_bias(int, double *);
-  void restore_bias(int, double *);
-  void remove_bias_thr(int, double *, double *);
-  void restore_bias_thr(int, double *, double *);
+  void remove_bias(int, double *) override;
+  void restore_bias(int, double *) override;
+  void remove_bias_thr(int, double *, double *) override;
+  void restore_bias_thr(int, double *, double *) override;
 
  private:
   int mode;
diff --git a/src/BOCS/compute_pressure_bocs.h b/src/BOCS/compute_pressure_bocs.h
index ccae6ce0e3..d44127ca50 100644
--- a/src/BOCS/compute_pressure_bocs.h
+++ b/src/BOCS/compute_pressure_bocs.h
@@ -38,11 +38,11 @@ const int NUM_CUBIC_SPLINE_COLUMNS = 5;     // cubic spline columns passed to co
 class ComputePressureBocs : public Compute {
  public:
   ComputePressureBocs(class LAMMPS *, int, char **);
-  virtual ~ComputePressureBocs();
-  virtual void init();
-  virtual double compute_scalar();
-  virtual void compute_vector();
-  void reset_extra_compute_fix(const char *);
+  ~ComputePressureBocs() override;
+  void init() override;
+  double compute_scalar() override;
+  void compute_vector() override;
+  void reset_extra_compute_fix(const char *) override;
 
   double compute_cg_scalar();
   double get_cg_p_corr(int, double *, int, double, double);
diff --git a/src/BODY/compute_body_local.h b/src/BODY/compute_body_local.h
index b0016aebaf..824d562637 100644
--- a/src/BODY/compute_body_local.h
+++ b/src/BODY/compute_body_local.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeBodyLocal : public Compute {
  public:
   ComputeBodyLocal(class LAMMPS *, int, char **);
-  ~ComputeBodyLocal();
-  void init();
-  void compute_local();
-  double memory_usage();
+  ~ComputeBodyLocal() override;
+  void init() override;
+  void compute_local() override;
+  double memory_usage() override;
 
  private:
   int nvalues;
diff --git a/src/BODY/compute_temp_body.h b/src/BODY/compute_temp_body.h
index 19115ad209..5e6275ae12 100644
--- a/src/BODY/compute_temp_body.h
+++ b/src/BODY/compute_temp_body.h
@@ -27,14 +27,14 @@ namespace LAMMPS_NS {
 class ComputeTempBody : public Compute {
  public:
   ComputeTempBody(class LAMMPS *, int, char **);
-  ~ComputeTempBody();
-  void init();
-  void setup();
-  double compute_scalar();
-  void compute_vector();
+  ~ComputeTempBody() override;
+  void init() override;
+  void setup() override;
+  double compute_scalar() override;
+  void compute_vector() override;
 
-  void remove_bias(int, double *);
-  void restore_bias(int, double *);
+  void remove_bias(int, double *) override;
+  void restore_bias(int, double *) override;
 
  private:
   int mode;
diff --git a/src/CORESHELL/compute_temp_cs.h b/src/CORESHELL/compute_temp_cs.h
index 70c681a264..34449afb47 100644
--- a/src/CORESHELL/compute_temp_cs.h
+++ b/src/CORESHELL/compute_temp_cs.h
@@ -27,21 +27,21 @@ namespace LAMMPS_NS {
 class ComputeTempCS : public Compute {
  public:
   ComputeTempCS(class LAMMPS *, int, char **);
-  ~ComputeTempCS();
-  void init();
-  void setup();
-  double compute_scalar();
-  void compute_vector();
-  double memory_usage();
+  ~ComputeTempCS() override;
+  void init() override;
+  void setup() override;
+  double compute_scalar() override;
+  void compute_vector() override;
+  double memory_usage() override;
 
-  void remove_bias(int, double *);
-  void remove_bias_all();
-  void reapply_bias_all();
-  void restore_bias(int, double *);
-  void restore_bias_all();
+  void remove_bias(int, double *) override;
+  void remove_bias_all() override;
+  void reapply_bias_all() override;
+  void restore_bias(int, double *) override;
+  void restore_bias_all() override;
 
-  int pack_reverse_comm(int, int, double *);
-  void unpack_reverse_comm(int, int *, double *);
+  int pack_reverse_comm(int, int, double *) override;
+  void unpack_reverse_comm(int, int *, double *) override;
 
  private:
   int groupbit_c, groupbit_s;
diff --git a/src/DIELECTRIC/compute_efield_atom.h b/src/DIELECTRIC/compute_efield_atom.h
index 1961e15d69..212893b385 100644
--- a/src/DIELECTRIC/compute_efield_atom.h
+++ b/src/DIELECTRIC/compute_efield_atom.h
@@ -27,13 +27,13 @@ namespace LAMMPS_NS {
 class ComputeEfieldAtom : public Compute {
  public:
   ComputeEfieldAtom(class LAMMPS *, int, char **);
-  ~ComputeEfieldAtom();
-  void init();
-  void setup();
-  void compute_peratom();
-  int pack_reverse_comm(int, int, double *);
-  void unpack_reverse_comm(int, int *, double *);
-  double memory_usage();
+  ~ComputeEfieldAtom() override;
+  void init() override;
+  void setup() override;
+  void compute_peratom() override;
+  int pack_reverse_comm(int, int, double *) override;
+  void unpack_reverse_comm(int, int *, double *) override;
+  double memory_usage() override;
 
  private:
   int pairflag;
diff --git a/src/DIFFRACTION/compute_saed.h b/src/DIFFRACTION/compute_saed.h
index 371e5c9c7f..379cb0d1e7 100644
--- a/src/DIFFRACTION/compute_saed.h
+++ b/src/DIFFRACTION/compute_saed.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeSAED : public Compute {
  public:
   ComputeSAED(class LAMMPS *, int, char **);
-  ~ComputeSAED();
-  void init();
-  void compute_vector();
-  double memory_usage();
+  ~ComputeSAED() override;
+  void init() override;
+  void compute_vector() override;
+  double memory_usage() override;
   //testing
   double saed_var[10];
 
diff --git a/src/DIFFRACTION/compute_xrd.h b/src/DIFFRACTION/compute_xrd.h
index 4254e50bf9..115ecfb6b4 100644
--- a/src/DIFFRACTION/compute_xrd.h
+++ b/src/DIFFRACTION/compute_xrd.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeXRD : public Compute {
  public:
   ComputeXRD(class LAMMPS *, int, char **);
-  ~ComputeXRD();
-  void init();
-  void compute_array();
-  double memory_usage();
+  ~ComputeXRD() override;
+  void init() override;
+  void compute_array() override;
+  double memory_usage() override;
 
  private:
   int me;
diff --git a/src/DPD-MESO/compute_edpd_temp_atom.h b/src/DPD-MESO/compute_edpd_temp_atom.h
index 0dd7464bca..a361698be9 100644
--- a/src/DPD-MESO/compute_edpd_temp_atom.h
+++ b/src/DPD-MESO/compute_edpd_temp_atom.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeEDPDTempAtom : public Compute {
  public:
   ComputeEDPDTempAtom(class LAMMPS *, int, char **);
-  ~ComputeEDPDTempAtom();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeEDPDTempAtom() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/DPD-MESO/compute_tdpd_cc_atom.h b/src/DPD-MESO/compute_tdpd_cc_atom.h
index 1f9fe76b25..403e32c6d5 100644
--- a/src/DPD-MESO/compute_tdpd_cc_atom.h
+++ b/src/DPD-MESO/compute_tdpd_cc_atom.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeTDPDCCAtom : public Compute {
  public:
   ComputeTDPDCCAtom(class LAMMPS *, int, char **);
-  ~ComputeTDPDCCAtom();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeTDPDCCAtom() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/DPD-REACT/compute_dpd.h b/src/DPD-REACT/compute_dpd.h
index e010ad8288..94c69d0a13 100644
--- a/src/DPD-REACT/compute_dpd.h
+++ b/src/DPD-REACT/compute_dpd.h
@@ -27,9 +27,9 @@ namespace LAMMPS_NS {
 class ComputeDpd : public Compute {
  public:
   ComputeDpd(class LAMMPS *, int, char **);
-  ~ComputeDpd();
-  void init() {}
-  void compute_vector();
+  ~ComputeDpd() override;
+  void init() override {}
+  void compute_vector() override;
 
  private:
   double *dpdU;
diff --git a/src/DPD-REACT/compute_dpd_atom.h b/src/DPD-REACT/compute_dpd_atom.h
index 7525e1cfab..4889987052 100644
--- a/src/DPD-REACT/compute_dpd_atom.h
+++ b/src/DPD-REACT/compute_dpd_atom.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeDpdAtom : public Compute {
  public:
   ComputeDpdAtom(class LAMMPS *, int, char **);
-  ~ComputeDpdAtom();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeDpdAtom() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/DRUDE/compute_temp_drude.h b/src/DRUDE/compute_temp_drude.h
index e1cd54edc8..7a16b208cc 100644
--- a/src/DRUDE/compute_temp_drude.h
+++ b/src/DRUDE/compute_temp_drude.h
@@ -27,11 +27,11 @@ namespace LAMMPS_NS {
 class ComputeTempDrude : public Compute {
  public:
   ComputeTempDrude(class LAMMPS *, int, char **);
-  ~ComputeTempDrude();
-  void init();
-  void setup();
-  void compute_vector();
-  double compute_scalar();
+  ~ComputeTempDrude() override;
+  void init() override;
+  void setup() override;
+  void compute_vector() override;
+  double compute_scalar() override;
   int modify_param(int, char **);
 
  private:
diff --git a/src/EFF/compute_ke_atom_eff.h b/src/EFF/compute_ke_atom_eff.h
index 160b8ac96e..b5ad27b524 100644
--- a/src/EFF/compute_ke_atom_eff.h
+++ b/src/EFF/compute_ke_atom_eff.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeKEAtomEff : public Compute {
  public:
   ComputeKEAtomEff(class LAMMPS *, int, char **);
-  ~ComputeKEAtomEff();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeKEAtomEff() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/EFF/compute_ke_eff.h b/src/EFF/compute_ke_eff.h
index 7e8063ba18..cc5baa863f 100644
--- a/src/EFF/compute_ke_eff.h
+++ b/src/EFF/compute_ke_eff.h
@@ -27,9 +27,8 @@ namespace LAMMPS_NS {
 class ComputeKEEff : public Compute {
  public:
   ComputeKEEff(class LAMMPS *, int, char **);
-  ~ComputeKEEff(){};
-  void init();
-  double compute_scalar();
+  void init() override;
+  double compute_scalar() override;
 
  private:
   double pfactor;
diff --git a/src/EFF/compute_temp_deform_eff.h b/src/EFF/compute_temp_deform_eff.h
index e90ba0465e..5490abd9ca 100644
--- a/src/EFF/compute_temp_deform_eff.h
+++ b/src/EFF/compute_temp_deform_eff.h
@@ -27,17 +27,17 @@ namespace LAMMPS_NS {
 class ComputeTempDeformEff : public Compute {
  public:
   ComputeTempDeformEff(class LAMMPS *, int, char **);
-  virtual ~ComputeTempDeformEff();
-  void init();
-  void setup();
-  virtual double compute_scalar();
-  virtual void compute_vector();
+  ~ComputeTempDeformEff() override;
+  void init() override;
+  void setup() override;
+  double compute_scalar() override;
+  void compute_vector() override;
 
-  void remove_bias(int, double *);
-  void remove_bias_all();
-  void restore_bias(int, double *);
-  void restore_bias_all();
-  double memory_usage();
+  void remove_bias(int, double *) override;
+  void remove_bias_all() override;
+  void restore_bias(int, double *) override;
+  void restore_bias_all() override;
+  double memory_usage() override;
 
  protected:
   double tfactor;
diff --git a/src/EFF/compute_temp_eff.h b/src/EFF/compute_temp_eff.h
index 112b51d9d7..bc2bbc3597 100644
--- a/src/EFF/compute_temp_eff.h
+++ b/src/EFF/compute_temp_eff.h
@@ -27,11 +27,11 @@ namespace LAMMPS_NS {
 class ComputeTempEff : public Compute {
  public:
   ComputeTempEff(class LAMMPS *, int, char **);
-  virtual ~ComputeTempEff();
-  void init() {}
-  void setup();
-  double compute_scalar();
-  void compute_vector();
+  ~ComputeTempEff() override;
+  void init() override {}
+  void setup() override;
+  double compute_scalar() override;
+  void compute_vector() override;
 
  private:
   double tfactor;
diff --git a/src/EFF/compute_temp_region_eff.h b/src/EFF/compute_temp_region_eff.h
index 08211c63c8..bc8f930374 100644
--- a/src/EFF/compute_temp_region_eff.h
+++ b/src/EFF/compute_temp_region_eff.h
@@ -27,19 +27,19 @@ namespace LAMMPS_NS {
 class ComputeTempRegionEff : public Compute {
  public:
   ComputeTempRegionEff(class LAMMPS *, int, char **);
-  virtual ~ComputeTempRegionEff();
-  void init();
-  void setup();
-  virtual double compute_scalar();
-  virtual void compute_vector();
+  ~ComputeTempRegionEff() override;
+  void init() override;
+  void setup() override;
+  double compute_scalar() override;
+  void compute_vector() override;
 
-  void dof_remove_pre();
-  int dof_remove(int);
-  void remove_bias(int, double *);
-  void remove_bias_all();
-  void restore_bias(int, double *);
-  void restore_bias_all();
-  double memory_usage();
+  void dof_remove_pre() override;
+  int dof_remove(int) override;
+  void remove_bias(int, double *) override;
+  void remove_bias_all() override;
+  void restore_bias(int, double *) override;
+  void restore_bias_all() override;
+  double memory_usage() override;
 
  protected:
   int iregion;
diff --git a/src/EXTRA-COMPUTE/compute_ackland_atom.h b/src/EXTRA-COMPUTE/compute_ackland_atom.h
index 657f419c86..5c4234e728 100644
--- a/src/EXTRA-COMPUTE/compute_ackland_atom.h
+++ b/src/EXTRA-COMPUTE/compute_ackland_atom.h
@@ -27,11 +27,11 @@ namespace LAMMPS_NS {
 class ComputeAcklandAtom : public Compute {
  public:
   ComputeAcklandAtom(class LAMMPS *, int, char **);
-  ~ComputeAcklandAtom();
-  void init();
-  void init_list(int, class NeighList *);
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeAcklandAtom() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax, maxneigh, legacy;
diff --git a/src/EXTRA-COMPUTE/compute_adf.h b/src/EXTRA-COMPUTE/compute_adf.h
index 6f7f8f35a4..817fbfa01e 100644
--- a/src/EXTRA-COMPUTE/compute_adf.h
+++ b/src/EXTRA-COMPUTE/compute_adf.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeADF : public Compute {
  public:
   ComputeADF(class LAMMPS *, int, char **);
-  ~ComputeADF();
-  void init();
-  void init_list(int, class NeighList *);
-  void compute_array();
+  ~ComputeADF() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_array() override;
 
  private:
   int nbin;                    // # of adf bins
diff --git a/src/EXTRA-COMPUTE/compute_ave_sphere_atom.h b/src/EXTRA-COMPUTE/compute_ave_sphere_atom.h
index 9b5e38750b..8e8ab0282d 100644
--- a/src/EXTRA-COMPUTE/compute_ave_sphere_atom.h
+++ b/src/EXTRA-COMPUTE/compute_ave_sphere_atom.h
@@ -27,13 +27,13 @@ namespace LAMMPS_NS {
 class ComputeAveSphereAtom : public Compute {
  public:
   ComputeAveSphereAtom(class LAMMPS *, int, char **);
-  virtual ~ComputeAveSphereAtom();
-  virtual void init();
-  void init_list(int, class NeighList *);
-  virtual void compute_peratom();
-  int pack_forward_comm(int, int *, double *, int, int *);
-  void unpack_forward_comm(int, int, double *);
-  double memory_usage();
+  ~ComputeAveSphereAtom() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_peratom() override;
+  int pack_forward_comm(int, int *, double *, int, int *) override;
+  void unpack_forward_comm(int, int, double *) override;
+  double memory_usage() override;
 
  protected:
   int nmax;
diff --git a/src/EXTRA-COMPUTE/compute_basal_atom.h b/src/EXTRA-COMPUTE/compute_basal_atom.h
index 45527411ec..75dabb22f9 100644
--- a/src/EXTRA-COMPUTE/compute_basal_atom.h
+++ b/src/EXTRA-COMPUTE/compute_basal_atom.h
@@ -27,11 +27,11 @@ namespace LAMMPS_NS {
 class ComputeBasalAtom : public Compute {
  public:
   ComputeBasalAtom(class LAMMPS *, int, char **);
-  ~ComputeBasalAtom();
-  void init();
-  void init_list(int, class NeighList *);
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeBasalAtom() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax, maxneigh;
diff --git a/src/EXTRA-COMPUTE/compute_cnp_atom.h b/src/EXTRA-COMPUTE/compute_cnp_atom.h
index 03c52c401a..050a1a7fb2 100644
--- a/src/EXTRA-COMPUTE/compute_cnp_atom.h
+++ b/src/EXTRA-COMPUTE/compute_cnp_atom.h
@@ -27,11 +27,11 @@ namespace LAMMPS_NS {
 class ComputeCNPAtom : public Compute {
  public:
   ComputeCNPAtom(class LAMMPS *, int, char **);
-  ~ComputeCNPAtom();
-  void init();
-  void init_list(int, class NeighList *);
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeCNPAtom() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   //revise
diff --git a/src/EXTRA-COMPUTE/compute_entropy_atom.h b/src/EXTRA-COMPUTE/compute_entropy_atom.h
index a122b2595d..eaca1ee395 100644
--- a/src/EXTRA-COMPUTE/compute_entropy_atom.h
+++ b/src/EXTRA-COMPUTE/compute_entropy_atom.h
@@ -27,11 +27,11 @@ namespace LAMMPS_NS {
 class ComputeEntropyAtom : public Compute {
  public:
   ComputeEntropyAtom(class LAMMPS *, int, char **);
-  ~ComputeEntropyAtom();
-  void init();
-  void init_list(int, class NeighList *);
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeEntropyAtom() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax, maxneigh, nbin;
diff --git a/src/EXTRA-COMPUTE/compute_gyration_shape.h b/src/EXTRA-COMPUTE/compute_gyration_shape.h
index 8f74082eec..60419d2324 100644
--- a/src/EXTRA-COMPUTE/compute_gyration_shape.h
+++ b/src/EXTRA-COMPUTE/compute_gyration_shape.h
@@ -29,9 +29,9 @@ class ComputeGyrationShape : public Compute {
   char *id_gyration;    // fields accessed by other classes
 
   ComputeGyrationShape(class LAMMPS *, int, char **);
-  ~ComputeGyrationShape();
-  void init();
-  void compute_vector();
+  ~ComputeGyrationShape() override;
+  void init() override;
+  void compute_vector() override;
 
  private:
   class Compute *c_gyration;
diff --git a/src/EXTRA-COMPUTE/compute_gyration_shape_chunk.h b/src/EXTRA-COMPUTE/compute_gyration_shape_chunk.h
index bfabfaa46d..f6437873f3 100644
--- a/src/EXTRA-COMPUTE/compute_gyration_shape_chunk.h
+++ b/src/EXTRA-COMPUTE/compute_gyration_shape_chunk.h
@@ -29,14 +29,14 @@ class ComputeGyrationShapeChunk : public Compute {
   char *id_gyration_chunk;    // fields accessed by other classes
 
   ComputeGyrationShapeChunk(class LAMMPS *, int, char **);
-  ~ComputeGyrationShapeChunk();
-  void init();
-  void setup();
-  void compute_array();
+  ~ComputeGyrationShapeChunk() override;
+  void init() override;
+  void setup() override;
+  void compute_array() override;
 
-  int lock_length();
+  int lock_length() override;
 
-  double memory_usage();
+  double memory_usage() override;
 
  private:
   int current_nchunks, former_nchunks;
diff --git a/src/EXTRA-COMPUTE/compute_hexorder_atom.h b/src/EXTRA-COMPUTE/compute_hexorder_atom.h
index 34653621ea..ad1fd45e15 100644
--- a/src/EXTRA-COMPUTE/compute_hexorder_atom.h
+++ b/src/EXTRA-COMPUTE/compute_hexorder_atom.h
@@ -27,11 +27,11 @@ namespace LAMMPS_NS {
 class ComputeHexOrderAtom : public Compute {
  public:
   ComputeHexOrderAtom(class LAMMPS *, int, char **);
-  ~ComputeHexOrderAtom();
-  void init();
-  void init_list(int, class NeighList *);
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeHexOrderAtom() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax, maxneigh, ncol, nnn, ndegree;
diff --git a/src/EXTRA-COMPUTE/compute_hma.h b/src/EXTRA-COMPUTE/compute_hma.h
index 750f5fc242..d15c6f4317 100644
--- a/src/EXTRA-COMPUTE/compute_hma.h
+++ b/src/EXTRA-COMPUTE/compute_hma.h
@@ -27,15 +27,15 @@ namespace LAMMPS_NS {
 class ComputeHMA : public Compute {
  public:
   ComputeHMA(class LAMMPS *, int, char **);
-  ~ComputeHMA();
-  void setup();
-  void init();
-  void init_list(int, class NeighList *);
-  void compute_vector();
-  void set_arrays(int);
-  int pack_forward_comm(int, int *, double *, int, int *);
-  void unpack_forward_comm(int, int, double *);
-  double memory_usage();
+  ~ComputeHMA() override;
+  void setup() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_vector() override;
+  void set_arrays(int) override;
+  int pack_forward_comm(int, int *, double *, int, int *) override;
+  void unpack_forward_comm(int, int, double *) override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/EXTRA-COMPUTE/compute_momentum.h b/src/EXTRA-COMPUTE/compute_momentum.h
index b6cfec95f6..60d5616d53 100644
--- a/src/EXTRA-COMPUTE/compute_momentum.h
+++ b/src/EXTRA-COMPUTE/compute_momentum.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeMomentum : public Compute {
  public:
   ComputeMomentum(class LAMMPS *, int, char **);
-  virtual ~ComputeMomentum();
+  ~ComputeMomentum() override;
 
-  virtual void init();
-  virtual void compute_vector();
+  void init() override;
+  void compute_vector() override;
 };
 
 }    // namespace LAMMPS_NS
diff --git a/src/EXTRA-COMPUTE/compute_msd_nongauss.h b/src/EXTRA-COMPUTE/compute_msd_nongauss.h
index d94adf74c4..56edc90e3b 100644
--- a/src/EXTRA-COMPUTE/compute_msd_nongauss.h
+++ b/src/EXTRA-COMPUTE/compute_msd_nongauss.h
@@ -27,8 +27,7 @@ namespace LAMMPS_NS {
 class ComputeMSDNonGauss : public ComputeMSD {
  public:
   ComputeMSDNonGauss(class LAMMPS *, int, char **);
-  ~ComputeMSDNonGauss() {}
-  void compute_vector();
+  void compute_vector() override;
 };
 
 }    // namespace LAMMPS_NS
diff --git a/src/EXTRA-COMPUTE/compute_pressure_cylinder.h b/src/EXTRA-COMPUTE/compute_pressure_cylinder.h
index 11202f6f85..871c820910 100644
--- a/src/EXTRA-COMPUTE/compute_pressure_cylinder.h
+++ b/src/EXTRA-COMPUTE/compute_pressure_cylinder.h
@@ -27,11 +27,11 @@ namespace LAMMPS_NS {
 class ComputePressureCyl : public Compute {
  public:
   ComputePressureCyl(class LAMMPS *, int, char **);
-  ~ComputePressureCyl();
-  void init();
-  void init_list(int, class NeighList *);
-  void compute_array();
-  double memory_usage();
+  ~ComputePressureCyl() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_array() override;
+  double memory_usage() override;
 
  private:
   int nbins, nphi, nzbins;
diff --git a/src/EXTRA-COMPUTE/compute_stress_mop.h b/src/EXTRA-COMPUTE/compute_stress_mop.h
index 29e85e190c..c247450019 100644
--- a/src/EXTRA-COMPUTE/compute_stress_mop.h
+++ b/src/EXTRA-COMPUTE/compute_stress_mop.h
@@ -31,10 +31,10 @@ namespace LAMMPS_NS {
 class ComputeStressMop : public Compute {
  public:
   ComputeStressMop(class LAMMPS *, int, char **);
-  virtual ~ComputeStressMop();
-  void init();
-  void init_list(int, class NeighList *);
-  void compute_vector();
+  ~ComputeStressMop() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_vector() override;
 
  private:
   void compute_pairs();
diff --git a/src/EXTRA-COMPUTE/compute_stress_mop_profile.h b/src/EXTRA-COMPUTE/compute_stress_mop_profile.h
index 8269fff269..f67448ca40 100644
--- a/src/EXTRA-COMPUTE/compute_stress_mop_profile.h
+++ b/src/EXTRA-COMPUTE/compute_stress_mop_profile.h
@@ -31,10 +31,10 @@ namespace LAMMPS_NS {
 class ComputeStressMopProfile : public Compute {
  public:
   ComputeStressMopProfile(class LAMMPS *, int, char **);
-  virtual ~ComputeStressMopProfile();
-  void init();
-  void init_list(int, class NeighList *);
-  void compute_array();
+  ~ComputeStressMopProfile() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_array() override;
 
  private:
   void compute_pairs();
diff --git a/src/EXTRA-COMPUTE/compute_temp_rotate.h b/src/EXTRA-COMPUTE/compute_temp_rotate.h
index af218e756c..76eec14c31 100644
--- a/src/EXTRA-COMPUTE/compute_temp_rotate.h
+++ b/src/EXTRA-COMPUTE/compute_temp_rotate.h
@@ -27,20 +27,20 @@ namespace LAMMPS_NS {
 class ComputeTempRotate : public Compute {
  public:
   ComputeTempRotate(class LAMMPS *, int, char **);
-  ~ComputeTempRotate();
-  void init();
-  void setup();
-  double compute_scalar();
-  void compute_vector();
+  ~ComputeTempRotate() override;
+  void init() override;
+  void setup() override;
+  double compute_scalar() override;
+  void compute_vector() override;
 
-  void remove_bias(int, double *);
-  void remove_bias_thr(int, double *, double *);
-  void remove_bias_all();
-  void restore_bias(int, double *);
-  void restore_bias_all();
-  void restore_bias_thr(int, double *, double *);
+  void remove_bias(int, double *) override;
+  void remove_bias_thr(int, double *, double *) override;
+  void remove_bias_all() override;
+  void restore_bias(int, double *) override;
+  void restore_bias_all() override;
+  void restore_bias_thr(int, double *, double *) override;
 
-  double memory_usage();
+  double memory_usage() override;
 
  private:
   double tfactor, masstotal;
diff --git a/src/EXTRA-COMPUTE/compute_ti.h b/src/EXTRA-COMPUTE/compute_ti.h
index 55d10c446c..e68decdceb 100644
--- a/src/EXTRA-COMPUTE/compute_ti.h
+++ b/src/EXTRA-COMPUTE/compute_ti.h
@@ -27,9 +27,9 @@ namespace LAMMPS_NS {
 class ComputeTI : public Compute {
  public:
   ComputeTI(class LAMMPS *, int, char **);
-  ~ComputeTI();
-  void init();
-  double compute_scalar();
+  ~ComputeTI() override;
+  void init() override;
+  double compute_scalar() override;
 
  private:
   int nterms;
diff --git a/src/FEP/compute_fep.h b/src/FEP/compute_fep.h
index d7f17abaf0..8f576124e0 100644
--- a/src/FEP/compute_fep.h
+++ b/src/FEP/compute_fep.h
@@ -31,9 +31,9 @@ namespace LAMMPS_NS {
 class ComputeFEP : public Compute {
  public:
   ComputeFEP(class LAMMPS *, int, char **);
-  ~ComputeFEP();
-  void init();
-  void compute_vector();
+  ~ComputeFEP() override;
+  void init() override;
+  void compute_vector() override;
 
  private:
   int npert;
diff --git a/src/GRANULAR/compute_contact_atom.h b/src/GRANULAR/compute_contact_atom.h
index 6be62e4b31..784bff568f 100644
--- a/src/GRANULAR/compute_contact_atom.h
+++ b/src/GRANULAR/compute_contact_atom.h
@@ -27,13 +27,13 @@ namespace LAMMPS_NS {
 class ComputeContactAtom : public Compute {
  public:
   ComputeContactAtom(class LAMMPS *, int, char **);
-  ~ComputeContactAtom();
-  void init();
-  void init_list(int, class NeighList *);
-  void compute_peratom();
-  int pack_reverse_comm(int, int, double *);
-  void unpack_reverse_comm(int, int *, double *);
-  double memory_usage();
+  ~ComputeContactAtom() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_peratom() override;
+  int pack_reverse_comm(int, int, double *) override;
+  void unpack_reverse_comm(int, int *, double *) override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/GRANULAR/compute_fabric.h b/src/GRANULAR/compute_fabric.h
index 5e20ea6562..b92f14bd2b 100644
--- a/src/GRANULAR/compute_fabric.h
+++ b/src/GRANULAR/compute_fabric.h
@@ -27,11 +27,11 @@ namespace LAMMPS_NS {
 class ComputeFabric : public Compute {
  public:
   ComputeFabric(class LAMMPS *, int, char **);
-  ~ComputeFabric();
-  void init();
-  void init_list(int, class NeighList *);
-  void compute_vector();
-  double compute_scalar();
+  ~ComputeFabric() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_vector() override;
+  double compute_scalar() override;
 
  private:
   int ntensors, pstyle, cutstyle;
diff --git a/src/KOKKOS/compute_ave_sphere_atom_kokkos.h b/src/KOKKOS/compute_ave_sphere_atom_kokkos.h
index 42607e5239..e935dc6a94 100644
--- a/src/KOKKOS/compute_ave_sphere_atom_kokkos.h
+++ b/src/KOKKOS/compute_ave_sphere_atom_kokkos.h
@@ -36,9 +36,9 @@ class ComputeAveSphereAtomKokkos : public ComputeAveSphereAtom {
   typedef ArrayTypes<DeviceType> AT;
 
   ComputeAveSphereAtomKokkos(class LAMMPS *, int, char **);
-  virtual ~ComputeAveSphereAtomKokkos();
-  void init();
-  void compute_peratom();
+  ~ComputeAveSphereAtomKokkos() override;
+  void init() override;
+  void compute_peratom() override;
 
   KOKKOS_INLINE_FUNCTION
   void operator()(TagComputeAveSphereAtom, const int&) const;
diff --git a/src/KOKKOS/compute_coord_atom_kokkos.h b/src/KOKKOS/compute_coord_atom_kokkos.h
index f67b52564c..1835bb6550 100644
--- a/src/KOKKOS/compute_coord_atom_kokkos.h
+++ b/src/KOKKOS/compute_coord_atom_kokkos.h
@@ -38,9 +38,9 @@ class ComputeCoordAtomKokkos : public ComputeCoordAtom {
   typedef ArrayTypes<DeviceType> AT;
 
   ComputeCoordAtomKokkos(class LAMMPS *, int, char **);
-  virtual ~ComputeCoordAtomKokkos();
-  void init();
-  void compute_peratom();
+  ~ComputeCoordAtomKokkos() override;
+  void init() override;
+  void compute_peratom() override;
   enum {NONE,CUTOFF,ORIENT};
 
   template<int CSTYLE, int NCOL>
diff --git a/src/KOKKOS/compute_orientorder_atom_kokkos.h b/src/KOKKOS/compute_orientorder_atom_kokkos.h
index 56d06b7936..f5ff8b2af7 100644
--- a/src/KOKKOS/compute_orientorder_atom_kokkos.h
+++ b/src/KOKKOS/compute_orientorder_atom_kokkos.h
@@ -67,9 +67,9 @@ class ComputeOrientOrderAtomKokkos : public ComputeOrientOrderAtom {
   typedef int value_type;
 
   ComputeOrientOrderAtomKokkos(class LAMMPS *, int, char **);
-  ~ComputeOrientOrderAtomKokkos();
-  void init();
-  void compute_peratom();
+  ~ComputeOrientOrderAtomKokkos() override;
+  void init() override;
+  void compute_peratom() override;
   t_sna_1i d_qlist;
 
   template<class TagStyle>
@@ -127,7 +127,7 @@ class ComputeOrientOrderAtomKokkos : public ComputeOrientOrderAtom {
   KOKKOS_INLINE_FUNCTION
   double associated_legendre(int, int, double) const;
 
-  void init_clebsch_gordan();
+  void init_clebsch_gordan() override;
   t_sna_1d d_cglist;                     // Clebsch-Gordan coeffs
 };
 
diff --git a/src/KOKKOS/compute_temp_deform_kokkos.h b/src/KOKKOS/compute_temp_deform_kokkos.h
index 0292c6776d..e4ccecfe4b 100644
--- a/src/KOKKOS/compute_temp_deform_kokkos.h
+++ b/src/KOKKOS/compute_temp_deform_kokkos.h
@@ -76,11 +76,11 @@ class ComputeTempDeformKokkos: public ComputeTempDeform {
   typedef ArrayTypes<DeviceType> AT;
 
   ComputeTempDeformKokkos(class LAMMPS *, int, char **);
-  ~ComputeTempDeformKokkos();
-  double compute_scalar();
-  void compute_vector();
-  void remove_bias_all();
-  void restore_bias_all();
+  ~ComputeTempDeformKokkos() override;
+  double compute_scalar() override;
+  void compute_vector() override;
+  void remove_bias_all() override;
+  void restore_bias_all() override;
 
   template<int RMASS>
   KOKKOS_INLINE_FUNCTION
diff --git a/src/KOKKOS/compute_temp_kokkos.h b/src/KOKKOS/compute_temp_kokkos.h
index d882ebc8f4..42954a360c 100644
--- a/src/KOKKOS/compute_temp_kokkos.h
+++ b/src/KOKKOS/compute_temp_kokkos.h
@@ -72,9 +72,9 @@ class ComputeTempKokkos : public ComputeTemp {
   typedef ArrayTypes<DeviceType> AT;
 
   ComputeTempKokkos(class LAMMPS *, int, char **);
-  virtual ~ComputeTempKokkos() {}
-  double compute_scalar();
-  void compute_vector();
+
+  double compute_scalar() override;
+  void compute_vector() override;
 
   template<int RMASS>
   KOKKOS_INLINE_FUNCTION
diff --git a/src/MACHDYN/compute_smd_contact_radius.h b/src/MACHDYN/compute_smd_contact_radius.h
index 87f3208dd3..3891bc8800 100644
--- a/src/MACHDYN/compute_smd_contact_radius.h
+++ b/src/MACHDYN/compute_smd_contact_radius.h
@@ -38,10 +38,10 @@ namespace LAMMPS_NS {
 class ComputeSMDContactRadius : public Compute {
  public:
   ComputeSMDContactRadius(class LAMMPS *, int, char **);
-  ~ComputeSMDContactRadius();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeSMDContactRadius() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/MACHDYN/compute_smd_damage.h b/src/MACHDYN/compute_smd_damage.h
index ac1fcb1bb4..0200c2a3e3 100644
--- a/src/MACHDYN/compute_smd_damage.h
+++ b/src/MACHDYN/compute_smd_damage.h
@@ -38,10 +38,10 @@ namespace LAMMPS_NS {
 class ComputeSMDDamage : public Compute {
  public:
   ComputeSMDDamage(class LAMMPS *, int, char **);
-  ~ComputeSMDDamage();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeSMDDamage() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/MACHDYN/compute_smd_hourglass_error.h b/src/MACHDYN/compute_smd_hourglass_error.h
index 32b5b90d56..8654028636 100644
--- a/src/MACHDYN/compute_smd_hourglass_error.h
+++ b/src/MACHDYN/compute_smd_hourglass_error.h
@@ -38,10 +38,10 @@ namespace LAMMPS_NS {
 class ComputeSMDHourglassError : public Compute {
  public:
   ComputeSMDHourglassError(class LAMMPS *, int, char **);
-  ~ComputeSMDHourglassError();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeSMDHourglassError() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/MACHDYN/compute_smd_internal_energy.h b/src/MACHDYN/compute_smd_internal_energy.h
index b4aaaf6b40..774e8f16e3 100644
--- a/src/MACHDYN/compute_smd_internal_energy.h
+++ b/src/MACHDYN/compute_smd_internal_energy.h
@@ -38,10 +38,10 @@ namespace LAMMPS_NS {
 class ComputeSMDInternalEnergy : public Compute {
  public:
   ComputeSMDInternalEnergy(class LAMMPS *, int, char **);
-  ~ComputeSMDInternalEnergy();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeSMDInternalEnergy() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/MACHDYN/compute_smd_plastic_strain.h b/src/MACHDYN/compute_smd_plastic_strain.h
index 7e319610a3..2315b2fcfe 100644
--- a/src/MACHDYN/compute_smd_plastic_strain.h
+++ b/src/MACHDYN/compute_smd_plastic_strain.h
@@ -38,10 +38,10 @@ namespace LAMMPS_NS {
 class ComputeSMDPlasticStrain : public Compute {
  public:
   ComputeSMDPlasticStrain(class LAMMPS *, int, char **);
-  ~ComputeSMDPlasticStrain();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeSMDPlasticStrain() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/MACHDYN/compute_smd_plastic_strain_rate.h b/src/MACHDYN/compute_smd_plastic_strain_rate.h
index d0ea09af26..29fb8b5669 100644
--- a/src/MACHDYN/compute_smd_plastic_strain_rate.h
+++ b/src/MACHDYN/compute_smd_plastic_strain_rate.h
@@ -38,10 +38,10 @@ namespace LAMMPS_NS {
 class ComputeSMDPlasticStrainRate : public Compute {
  public:
   ComputeSMDPlasticStrainRate(class LAMMPS *, int, char **);
-  ~ComputeSMDPlasticStrainRate();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeSMDPlasticStrainRate() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/MACHDYN/compute_smd_rho.h b/src/MACHDYN/compute_smd_rho.h
index 954caade5d..b4d41f1ee7 100644
--- a/src/MACHDYN/compute_smd_rho.h
+++ b/src/MACHDYN/compute_smd_rho.h
@@ -38,10 +38,10 @@ namespace LAMMPS_NS {
 class ComputeSMDRho : public Compute {
  public:
   ComputeSMDRho(class LAMMPS *, int, char **);
-  ~ComputeSMDRho();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeSMDRho() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/MACHDYN/compute_smd_tlsph_dt.h b/src/MACHDYN/compute_smd_tlsph_dt.h
index e57db2dd74..7a4154da9a 100644
--- a/src/MACHDYN/compute_smd_tlsph_dt.h
+++ b/src/MACHDYN/compute_smd_tlsph_dt.h
@@ -38,10 +38,10 @@ namespace LAMMPS_NS {
 class ComputeSMDTlsphDt : public Compute {
  public:
   ComputeSMDTlsphDt(class LAMMPS *, int, char **);
-  ~ComputeSMDTlsphDt();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeSMDTlsphDt() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/MACHDYN/compute_smd_tlsph_num_neighs.h b/src/MACHDYN/compute_smd_tlsph_num_neighs.h
index e3531a47ea..53efa059b6 100644
--- a/src/MACHDYN/compute_smd_tlsph_num_neighs.h
+++ b/src/MACHDYN/compute_smd_tlsph_num_neighs.h
@@ -38,10 +38,10 @@ namespace LAMMPS_NS {
 class ComputeSMDTLSPHNumNeighs : public Compute {
  public:
   ComputeSMDTLSPHNumNeighs(class LAMMPS *, int, char **);
-  ~ComputeSMDTLSPHNumNeighs();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeSMDTLSPHNumNeighs() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/MACHDYN/compute_smd_triangle_vertices.h b/src/MACHDYN/compute_smd_triangle_vertices.h
index 06be1a4e1a..b7fa2e4fc2 100644
--- a/src/MACHDYN/compute_smd_triangle_vertices.h
+++ b/src/MACHDYN/compute_smd_triangle_vertices.h
@@ -38,10 +38,10 @@ namespace LAMMPS_NS {
 class ComputeSMDTriangleVertices : public Compute {
  public:
   ComputeSMDTriangleVertices(class LAMMPS *, int, char **);
-  ~ComputeSMDTriangleVertices();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeSMDTriangleVertices() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/MACHDYN/compute_smd_ulsph_effm.h b/src/MACHDYN/compute_smd_ulsph_effm.h
index 836a3d2a74..5a653b48cd 100644
--- a/src/MACHDYN/compute_smd_ulsph_effm.h
+++ b/src/MACHDYN/compute_smd_ulsph_effm.h
@@ -38,10 +38,10 @@ namespace LAMMPS_NS {
 class ComputeSMD_Ulsph_Effm : public Compute {
  public:
   ComputeSMD_Ulsph_Effm(class LAMMPS *, int, char **);
-  ~ComputeSMD_Ulsph_Effm();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeSMD_Ulsph_Effm() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/MACHDYN/compute_smd_ulsph_num_neighs.h b/src/MACHDYN/compute_smd_ulsph_num_neighs.h
index 527ba17737..29f98eac53 100644
--- a/src/MACHDYN/compute_smd_ulsph_num_neighs.h
+++ b/src/MACHDYN/compute_smd_ulsph_num_neighs.h
@@ -38,10 +38,10 @@ namespace LAMMPS_NS {
 class ComputeSMDULSPHNumNeighs : public Compute {
  public:
   ComputeSMDULSPHNumNeighs(class LAMMPS *, int, char **);
-  ~ComputeSMDULSPHNumNeighs();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeSMDULSPHNumNeighs() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/MACHDYN/compute_smd_ulsph_strain.h b/src/MACHDYN/compute_smd_ulsph_strain.h
index 54f53f6782..b958c036fd 100644
--- a/src/MACHDYN/compute_smd_ulsph_strain.h
+++ b/src/MACHDYN/compute_smd_ulsph_strain.h
@@ -38,10 +38,10 @@ namespace LAMMPS_NS {
 class ComputeSMDULSPHstrain : public Compute {
  public:
   ComputeSMDULSPHstrain(class LAMMPS *, int, char **);
-  ~ComputeSMDULSPHstrain();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeSMDULSPHstrain() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/MACHDYN/compute_smd_vol.h b/src/MACHDYN/compute_smd_vol.h
index c0fd4550b4..e368633fba 100644
--- a/src/MACHDYN/compute_smd_vol.h
+++ b/src/MACHDYN/compute_smd_vol.h
@@ -38,11 +38,11 @@ namespace LAMMPS_NS {
 class ComputeSMDVol : public Compute {
  public:
   ComputeSMDVol(class LAMMPS *, int, char **);
-  ~ComputeSMDVol();
-  void init();
-  void compute_peratom();
-  double compute_scalar();
-  double memory_usage();
+  ~ComputeSMDVol() override;
+  void init() override;
+  void compute_peratom() override;
+  double compute_scalar() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/MESONT/compute_mesont.h b/src/MESONT/compute_mesont.h
index ea8df7cf8c..b1ed890139 100644
--- a/src/MESONT/compute_mesont.h
+++ b/src/MESONT/compute_mesont.h
@@ -29,13 +29,13 @@ namespace LAMMPS_NS {
 class ComputeMesoNT : public Compute {
  public:
   ComputeMesoNT(class LAMMPS *, int, char **);
-  ~ComputeMesoNT();
-  void init() {}
-  void compute_peratom();
-  double compute_scalar();
-  int pack_reverse_comm(int, int, double *);
-  void unpack_reverse_comm(int, int *, double *);
-  double memory_usage();
+  ~ComputeMesoNT() override;
+  void init() override {}
+  void compute_peratom() override;
+  double compute_scalar() override;
+  int pack_reverse_comm(int, int, double *) override;
+  void unpack_reverse_comm(int, int *, double *) override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/MISC/compute_viscosity_cos.h b/src/MISC/compute_viscosity_cos.h
index e6a1894ce3..d30ff5c50a 100644
--- a/src/MISC/compute_viscosity_cos.h
+++ b/src/MISC/compute_viscosity_cos.h
@@ -31,18 +31,18 @@ namespace LAMMPS_NS {
 class ComputeViscosityCos : public Compute {
  public:
   ComputeViscosityCos(class LAMMPS *, int, char **);
-  virtual ~ComputeViscosityCos();
-  void init() {}
-  void setup();
-  virtual double compute_scalar();
-  virtual void compute_vector();
+  ~ComputeViscosityCos() override;
+  void init() override {}
+  void setup() override;
+  double compute_scalar() override;
+  void compute_vector() override;
 
-  void remove_bias(int, double *);
-  void remove_bias_thr(int, double *, double *);
-  void remove_bias_all();
-  void restore_bias(int, double *);
-  void restore_bias_thr(int, double *, double *);
-  void restore_bias_all();
+  void remove_bias(int, double *) override;
+  void remove_bias_thr(int, double *, double *) override;
+  void remove_bias_all() override;
+  void restore_bias(int, double *) override;
+  void restore_bias_thr(int, double *, double *) override;
+  void restore_bias_all() override;
 
  protected:
   double tfactor;
diff --git a/src/ML-IAP/compute_mliap.h b/src/ML-IAP/compute_mliap.h
index 6afbc970cb..db1b6c0449 100644
--- a/src/ML-IAP/compute_mliap.h
+++ b/src/ML-IAP/compute_mliap.h
@@ -27,13 +27,13 @@ namespace LAMMPS_NS {
 class ComputeMLIAP : public Compute {
  public:
   ComputeMLIAP(class LAMMPS *, int, char **);
-  ~ComputeMLIAP();
-  void init();
-  void init_list(int, class NeighList *);
-  void compute_array();
+  ~ComputeMLIAP() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_array() override;
   void generate_neigharrays();
   void grow_neigharrays();
-  double memory_usage();
+  double memory_usage() override;
 
  private:
   double **mliaparray, **mliaparrayall;
diff --git a/src/ML-IAP/mliap_data.h b/src/ML-IAP/mliap_data.h
index 5f689c204c..258261fa1a 100644
--- a/src/ML-IAP/mliap_data.h
+++ b/src/ML-IAP/mliap_data.h
@@ -23,7 +23,7 @@ class MLIAPData : protected Pointers {
  public:
   MLIAPData(class LAMMPS *, int, int *, class MLIAPModel *, class MLIAPDescriptor *,
             class PairMLIAP * = nullptr);
-  ~MLIAPData();
+  ~MLIAPData() override;
 
   void init();
   void generate_neighdata(class NeighList *, int = 0, int = 0);
diff --git a/src/ML-IAP/mliap_descriptor.h b/src/ML-IAP/mliap_descriptor.h
index 1655cc4a82..156f8d1e92 100644
--- a/src/ML-IAP/mliap_descriptor.h
+++ b/src/ML-IAP/mliap_descriptor.h
@@ -21,7 +21,7 @@ namespace LAMMPS_NS {
 class MLIAPDescriptor : protected Pointers {
  public:
   MLIAPDescriptor(LAMMPS *);
-  virtual ~MLIAPDescriptor();
+  ~MLIAPDescriptor() override;
   virtual void compute_descriptors(class MLIAPData *) = 0;
   virtual void compute_forces(class MLIAPData *) = 0;
   virtual void compute_force_gradients(class MLIAPData *) = 0;
diff --git a/src/ML-IAP/mliap_descriptor_snap.h b/src/ML-IAP/mliap_descriptor_snap.h
index 7d8c3ea98c..9098015a4f 100644
--- a/src/ML-IAP/mliap_descriptor_snap.h
+++ b/src/ML-IAP/mliap_descriptor_snap.h
@@ -21,13 +21,13 @@ namespace LAMMPS_NS {
 class MLIAPDescriptorSNAP : public MLIAPDescriptor {
  public:
   MLIAPDescriptorSNAP(LAMMPS *, char *);
-  virtual ~MLIAPDescriptorSNAP();
-  virtual void compute_descriptors(class MLIAPData *);
-  virtual void compute_forces(class MLIAPData *);
-  virtual void compute_force_gradients(class MLIAPData *);
-  virtual void compute_descriptor_gradients(class MLIAPData *);
-  virtual void init();
-  virtual double memory_usage();
+  ~MLIAPDescriptorSNAP() override;
+  void compute_descriptors(class MLIAPData *) override;
+  void compute_forces(class MLIAPData *) override;
+  void compute_force_gradients(class MLIAPData *) override;
+  void compute_descriptor_gradients(class MLIAPData *) override;
+  void init() override;
+  double memory_usage() override;
 
   double rcutfac;
 
diff --git a/src/ML-IAP/mliap_model.h b/src/ML-IAP/mliap_model.h
index 3a73065b04..23895f29c3 100644
--- a/src/ML-IAP/mliap_model.h
+++ b/src/ML-IAP/mliap_model.h
@@ -21,7 +21,7 @@ namespace LAMMPS_NS {
 class MLIAPModel : protected Pointers {
  public:
   MLIAPModel(LAMMPS *, char *);
-  virtual ~MLIAPModel();
+  ~MLIAPModel() override;
   void set_ndescriptors(int);
   void set_nelements(int);
   virtual int get_nparams() = 0;
@@ -44,11 +44,11 @@ class MLIAPModel : protected Pointers {
 class MLIAPModelSimple : public MLIAPModel {
  public:
   MLIAPModelSimple(LAMMPS *, char *);
-  ~MLIAPModelSimple(){};
-  virtual double memory_usage();
+  ~MLIAPModelSimple() override{};
+  double memory_usage() override;
 
  protected:
-  virtual void read_coeffs(char *);
+  void read_coeffs(char *) override;
 };
 
 }    // namespace LAMMPS_NS
diff --git a/src/ML-IAP/mliap_model_linear.h b/src/ML-IAP/mliap_model_linear.h
index d2abaec31e..cd22ca8d7d 100644
--- a/src/ML-IAP/mliap_model_linear.h
+++ b/src/ML-IAP/mliap_model_linear.h
@@ -21,12 +21,12 @@ namespace LAMMPS_NS {
 class MLIAPModelLinear : public MLIAPModelSimple {
  public:
   MLIAPModelLinear(LAMMPS *, char * = nullptr);
-  ~MLIAPModelLinear() = default;
-  virtual int get_nparams();
-  virtual int get_gamma_nnz(class MLIAPData *);
-  virtual void compute_gradients(class MLIAPData *);
-  virtual void compute_gradgrads(class MLIAPData *);
-  virtual void compute_force_gradients(class MLIAPData *);
+
+  int get_nparams() override;
+  int get_gamma_nnz(class MLIAPData *) override;
+  void compute_gradients(class MLIAPData *) override;
+  void compute_gradgrads(class MLIAPData *) override;
+  void compute_force_gradients(class MLIAPData *) override;
 
  protected:
 };
diff --git a/src/ML-IAP/mliap_model_quadratic.h b/src/ML-IAP/mliap_model_quadratic.h
index 74234066c8..36eab165e4 100644
--- a/src/ML-IAP/mliap_model_quadratic.h
+++ b/src/ML-IAP/mliap_model_quadratic.h
@@ -21,12 +21,12 @@ namespace LAMMPS_NS {
 class MLIAPModelQuadratic : public MLIAPModelSimple {
  public:
   MLIAPModelQuadratic(LAMMPS *, char * = nullptr);
-  ~MLIAPModelQuadratic() = default;
-  virtual int get_nparams();
-  virtual int get_gamma_nnz(class MLIAPData *);
-  virtual void compute_gradients(class MLIAPData *);
-  virtual void compute_gradgrads(class MLIAPData *);
-  virtual void compute_force_gradients(class MLIAPData *);
+
+  int get_nparams() override;
+  int get_gamma_nnz(class MLIAPData *) override;
+  void compute_gradients(class MLIAPData *) override;
+  void compute_gradgrads(class MLIAPData *) override;
+  void compute_force_gradients(class MLIAPData *) override;
 
  protected:
 };
diff --git a/src/ML-SNAP/compute_sna_atom.h b/src/ML-SNAP/compute_sna_atom.h
index 3bcf217b51..ca5cd64d47 100644
--- a/src/ML-SNAP/compute_sna_atom.h
+++ b/src/ML-SNAP/compute_sna_atom.h
@@ -27,11 +27,11 @@ namespace LAMMPS_NS {
 class ComputeSNAAtom : public Compute {
  public:
   ComputeSNAAtom(class LAMMPS *, int, char **);
-  ~ComputeSNAAtom();
-  void init();
-  void init_list(int, class NeighList *);
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeSNAAtom() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/ML-SNAP/compute_snad_atom.h b/src/ML-SNAP/compute_snad_atom.h
index f175538d5f..94dec9b85f 100644
--- a/src/ML-SNAP/compute_snad_atom.h
+++ b/src/ML-SNAP/compute_snad_atom.h
@@ -27,13 +27,13 @@ namespace LAMMPS_NS {
 class ComputeSNADAtom : public Compute {
  public:
   ComputeSNADAtom(class LAMMPS *, int, char **);
-  ~ComputeSNADAtom();
-  void init();
-  void init_list(int, class NeighList *);
-  void compute_peratom();
-  int pack_reverse_comm(int, int, double *);
-  void unpack_reverse_comm(int, int *, double *);
-  double memory_usage();
+  ~ComputeSNADAtom() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_peratom() override;
+  int pack_reverse_comm(int, int, double *) override;
+  void unpack_reverse_comm(int, int *, double *) override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/ML-SNAP/compute_snap.h b/src/ML-SNAP/compute_snap.h
index 131fafd68c..f092ede729 100644
--- a/src/ML-SNAP/compute_snap.h
+++ b/src/ML-SNAP/compute_snap.h
@@ -27,11 +27,11 @@ namespace LAMMPS_NS {
 class ComputeSnap : public Compute {
  public:
   ComputeSnap(class LAMMPS *, int, char **);
-  ~ComputeSnap();
-  void init();
-  void init_list(int, class NeighList *);
-  void compute_array();
-  double memory_usage();
+  ~ComputeSnap() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_array() override;
+  double memory_usage() override;
 
  private:
   int natoms, nmax, size_peratom, lastcol;
diff --git a/src/ML-SNAP/compute_snav_atom.h b/src/ML-SNAP/compute_snav_atom.h
index 0c3fce54bb..d61d345408 100644
--- a/src/ML-SNAP/compute_snav_atom.h
+++ b/src/ML-SNAP/compute_snav_atom.h
@@ -27,13 +27,13 @@ namespace LAMMPS_NS {
 class ComputeSNAVAtom : public Compute {
  public:
   ComputeSNAVAtom(class LAMMPS *, int, char **);
-  ~ComputeSNAVAtom();
-  void init();
-  void init_list(int, class NeighList *);
-  void compute_peratom();
-  int pack_reverse_comm(int, int, double *);
-  void unpack_reverse_comm(int, int *, double *);
-  double memory_usage();
+  ~ComputeSNAVAtom() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_peratom() override;
+  int pack_reverse_comm(int, int, double *) override;
+  void unpack_reverse_comm(int, int *, double *) override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/ML-SNAP/sna.h b/src/ML-SNAP/sna.h
index bd2249a101..3b949d564c 100644
--- a/src/ML-SNAP/sna.h
+++ b/src/ML-SNAP/sna.h
@@ -36,7 +36,7 @@ class SNA : protected Pointers {
   SNA(LAMMPS *, double, int, double, int, int, int, int, int, int);
 
   SNA(LAMMPS *lmp) : Pointers(lmp){};
-  ~SNA();
+  ~SNA() override;
   void build_indexlist();
   void init();
   double memory_usage();
diff --git a/src/PERI/compute_damage_atom.h b/src/PERI/compute_damage_atom.h
index 43b28c3794..3195977101 100644
--- a/src/PERI/compute_damage_atom.h
+++ b/src/PERI/compute_damage_atom.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeDamageAtom : public Compute {
  public:
   ComputeDamageAtom(class LAMMPS *, int, char **);
-  ~ComputeDamageAtom();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeDamageAtom() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/PERI/compute_dilatation_atom.h b/src/PERI/compute_dilatation_atom.h
index 476634753d..b035c79255 100644
--- a/src/PERI/compute_dilatation_atom.h
+++ b/src/PERI/compute_dilatation_atom.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeDilatationAtom : public Compute {
  public:
   ComputeDilatationAtom(class LAMMPS *, int, char **);
-  ~ComputeDilatationAtom();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeDilatationAtom() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/PERI/compute_plasticity_atom.h b/src/PERI/compute_plasticity_atom.h
index cbb1182dee..ba0e04a48c 100644
--- a/src/PERI/compute_plasticity_atom.h
+++ b/src/PERI/compute_plasticity_atom.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputePlasticityAtom : public Compute {
  public:
   ComputePlasticityAtom(class LAMMPS *, int, char **);
-  ~ComputePlasticityAtom();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputePlasticityAtom() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/PTM/compute_ptm_atom.h b/src/PTM/compute_ptm_atom.h
index 3df1c2518e..61101f6efa 100644
--- a/src/PTM/compute_ptm_atom.h
+++ b/src/PTM/compute_ptm_atom.h
@@ -27,11 +27,11 @@ namespace LAMMPS_NS {
 class ComputePTMAtom : public Compute {
  public:
   ComputePTMAtom(class LAMMPS *, int, char **);
-  ~ComputePTMAtom();
-  void init();
-  void init_list(int, class NeighList *);
-  void compute_peratom();
-  double memory_usage();
+  ~ComputePTMAtom() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/REAXFF/compute_spec_atom.h b/src/REAXFF/compute_spec_atom.h
index 3974f38354..40f184e3ed 100644
--- a/src/REAXFF/compute_spec_atom.h
+++ b/src/REAXFF/compute_spec_atom.h
@@ -28,10 +28,10 @@ namespace LAMMPS_NS {
 class ComputeSpecAtom : public Compute {
  public:
   ComputeSpecAtom(class LAMMPS *, int, char **);
-  ~ComputeSpecAtom();
-  void init() {}
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeSpecAtom() override;
+  void init() override {}
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nvalues;
diff --git a/src/REPLICA/compute_event_displace.h b/src/REPLICA/compute_event_displace.h
index c8c4c8810d..d4ee68a092 100644
--- a/src/REPLICA/compute_event_displace.h
+++ b/src/REPLICA/compute_event_displace.h
@@ -27,12 +27,12 @@ namespace LAMMPS_NS {
 class ComputeEventDisplace : public Compute {
  public:
   ComputeEventDisplace(class LAMMPS *, int, char **);
-  ~ComputeEventDisplace();
-  void init();
-  double compute_scalar();
+  ~ComputeEventDisplace() override;
+  void init() override;
+  double compute_scalar() override;
 
   int all_events();
-  void reset_extra_compute_fix(const char *);
+  void reset_extra_compute_fix(const char *) override;
 
  private:
   int triclinic;
diff --git a/src/REPLICA/compute_pressure_grem.h b/src/REPLICA/compute_pressure_grem.h
index 74a504270d..8fa62965ee 100644
--- a/src/REPLICA/compute_pressure_grem.h
+++ b/src/REPLICA/compute_pressure_grem.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputePressureGrem : public ComputePressure {
  public:
   ComputePressureGrem(class LAMMPS *, int, char **);
-  virtual ~ComputePressureGrem();
-  virtual void init();
-  virtual double compute_scalar();
-  virtual void compute_vector();
+  ~ComputePressureGrem() override;
+  void init() override;
+  double compute_scalar() override;
+  void compute_vector() override;
 
  protected:
   // Access to gREM fix scale factor
diff --git a/src/RIGID/compute_erotate_rigid.h b/src/RIGID/compute_erotate_rigid.h
index b8571fa21a..3005df8493 100644
--- a/src/RIGID/compute_erotate_rigid.h
+++ b/src/RIGID/compute_erotate_rigid.h
@@ -27,9 +27,9 @@ namespace LAMMPS_NS {
 class ComputeERotateRigid : public Compute {
  public:
   ComputeERotateRigid(class LAMMPS *, int, char **);
-  ~ComputeERotateRigid();
-  void init();
-  double compute_scalar();
+  ~ComputeERotateRigid() override;
+  void init() override;
+  double compute_scalar() override;
 
  private:
   int irfix;
diff --git a/src/RIGID/compute_ke_rigid.h b/src/RIGID/compute_ke_rigid.h
index 32ec7e062e..dfdd4d2e21 100644
--- a/src/RIGID/compute_ke_rigid.h
+++ b/src/RIGID/compute_ke_rigid.h
@@ -27,9 +27,9 @@ namespace LAMMPS_NS {
 class ComputeKERigid : public Compute {
  public:
   ComputeKERigid(class LAMMPS *, int, char **);
-  ~ComputeKERigid();
-  void init();
-  double compute_scalar();
+  ~ComputeKERigid() override;
+  void init() override;
+  double compute_scalar() override;
 
  private:
   int irfix;
diff --git a/src/RIGID/compute_rigid_local.h b/src/RIGID/compute_rigid_local.h
index 3c8b48f366..1d07f835b2 100644
--- a/src/RIGID/compute_rigid_local.h
+++ b/src/RIGID/compute_rigid_local.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeRigidLocal : public Compute {
  public:
   ComputeRigidLocal(class LAMMPS *, int, char **);
-  ~ComputeRigidLocal();
-  void init();
-  void compute_local();
-  double memory_usage();
+  ~ComputeRigidLocal() override;
+  void init() override;
+  void compute_local() override;
+  double memory_usage() override;
 
  private:
   int nvalues;
diff --git a/src/SPH/compute_sph_e_atom.h b/src/SPH/compute_sph_e_atom.h
index fa6d995dcc..00ff5550d7 100644
--- a/src/SPH/compute_sph_e_atom.h
+++ b/src/SPH/compute_sph_e_atom.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeSPHEAtom : public Compute {
  public:
   ComputeSPHEAtom(class LAMMPS *, int, char **);
-  ~ComputeSPHEAtom();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeSPHEAtom() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/SPH/compute_sph_rho_atom.h b/src/SPH/compute_sph_rho_atom.h
index 9c3a367b6c..a3a366df07 100644
--- a/src/SPH/compute_sph_rho_atom.h
+++ b/src/SPH/compute_sph_rho_atom.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeSPHRhoAtom : public Compute {
  public:
   ComputeSPHRhoAtom(class LAMMPS *, int, char **);
-  ~ComputeSPHRhoAtom();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeSPHRhoAtom() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/SPH/compute_sph_t_atom.h b/src/SPH/compute_sph_t_atom.h
index 937ab6da33..786fb8b063 100644
--- a/src/SPH/compute_sph_t_atom.h
+++ b/src/SPH/compute_sph_t_atom.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeSPHTAtom : public Compute {
  public:
   ComputeSPHTAtom(class LAMMPS *, int, char **);
-  ~ComputeSPHTAtom();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeSPHTAtom() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/SPIN/compute_spin.h b/src/SPIN/compute_spin.h
index 766cfa4ccd..7f85053c0c 100644
--- a/src/SPIN/compute_spin.h
+++ b/src/SPIN/compute_spin.h
@@ -27,9 +27,9 @@ namespace LAMMPS_NS {
 class ComputeSpin : public Compute {
  public:
   ComputeSpin(class LAMMPS *, int, char **);
-  ~ComputeSpin();
-  void init();
-  void compute_vector();
+  ~ComputeSpin() override;
+  void init() override;
+  void compute_vector() override;
 
  private:
   int pair_spin_flag;          // magnetic pair flags
diff --git a/src/TALLY/compute_force_tally.h b/src/TALLY/compute_force_tally.h
index f35ea9ad0a..a46e074103 100644
--- a/src/TALLY/compute_force_tally.h
+++ b/src/TALLY/compute_force_tally.h
@@ -28,19 +28,19 @@ class ComputeForceTally : public Compute {
 
  public:
   ComputeForceTally(class LAMMPS *, int, char **);
-  virtual ~ComputeForceTally();
+  ~ComputeForceTally() override;
 
-  void init();
+  void init() override;
 
-  double compute_scalar();
-  void compute_peratom();
+  double compute_scalar() override;
+  void compute_peratom() override;
 
-  int pack_reverse_comm(int, int, double *);
-  void unpack_reverse_comm(int, int *, double *);
-  double memory_usage();
+  int pack_reverse_comm(int, int, double *) override;
+  void unpack_reverse_comm(int, int *, double *) override;
+  double memory_usage() override;
 
-  void pair_setup_callback(int, int);
-  void pair_tally_callback(int, int, int, int, double, double, double, double, double, double);
+  void pair_setup_callback(int, int) override;
+  void pair_tally_callback(int, int, int, int, double, double, double, double, double, double) override;
 
  private:
   bigint did_setup;
diff --git a/src/TALLY/compute_heat_flux_tally.h b/src/TALLY/compute_heat_flux_tally.h
index 234afa8c68..8110ad6fc7 100644
--- a/src/TALLY/compute_heat_flux_tally.h
+++ b/src/TALLY/compute_heat_flux_tally.h
@@ -28,18 +28,18 @@ class ComputeHeatFluxTally : public Compute {
 
  public:
   ComputeHeatFluxTally(class LAMMPS *, int, char **);
-  virtual ~ComputeHeatFluxTally();
+  ~ComputeHeatFluxTally() override;
 
-  void init();
+  void init() override;
 
-  void compute_vector();
+  void compute_vector() override;
 
-  int pack_reverse_comm(int, int, double *);
-  void unpack_reverse_comm(int, int *, double *);
-  double memory_usage();
+  int pack_reverse_comm(int, int, double *) override;
+  void unpack_reverse_comm(int, int *, double *) override;
+  double memory_usage() override;
 
-  void pair_setup_callback(int, int);
-  void pair_tally_callback(int, int, int, int, double, double, double, double, double, double);
+  void pair_setup_callback(int, int) override;
+  void pair_tally_callback(int, int, int, int, double, double, double, double, double, double) override;
 
  private:
   bigint did_setup;
diff --git a/src/TALLY/compute_heat_flux_virial_tally.h b/src/TALLY/compute_heat_flux_virial_tally.h
index d2a3d39a7d..1d664ce560 100644
--- a/src/TALLY/compute_heat_flux_virial_tally.h
+++ b/src/TALLY/compute_heat_flux_virial_tally.h
@@ -28,19 +28,19 @@ class ComputeHeatFluxVirialTally : public Compute {
 
  public:
   ComputeHeatFluxVirialTally(class LAMMPS *, int, char **);
-  virtual ~ComputeHeatFluxVirialTally();
+  ~ComputeHeatFluxVirialTally() override;
 
-  void init();
+  void init() override;
 
-  double compute_scalar();
-  void compute_peratom();
+  double compute_scalar() override;
+  void compute_peratom() override;
 
-  int pack_reverse_comm(int, int, double *);
-  void unpack_reverse_comm(int, int *, double *);
-  double memory_usage();
+  int pack_reverse_comm(int, int, double *) override;
+  void unpack_reverse_comm(int, int *, double *) override;
+  double memory_usage() override;
 
-  void pair_setup_callback(int, int);
-  void pair_tally_callback(int, int, int, int, double, double, double, double, double, double);
+  void pair_setup_callback(int, int) override;
+  void pair_tally_callback(int, int, int, int, double, double, double, double, double, double) override;
 
  private:
   bigint did_setup;
diff --git a/src/TALLY/compute_pe_mol_tally.h b/src/TALLY/compute_pe_mol_tally.h
index 3f7457aad5..b123d7cf78 100644
--- a/src/TALLY/compute_pe_mol_tally.h
+++ b/src/TALLY/compute_pe_mol_tally.h
@@ -28,13 +28,13 @@ class ComputePEMolTally : public Compute {
 
  public:
   ComputePEMolTally(class LAMMPS *, int, char **);
-  virtual ~ComputePEMolTally();
+  ~ComputePEMolTally() override;
 
-  void init();
-  void compute_vector();
+  void init() override;
+  void compute_vector() override;
 
-  void pair_setup_callback(int, int);
-  void pair_tally_callback(int, int, int, int, double, double, double, double, double, double);
+  void pair_setup_callback(int, int) override;
+  void pair_tally_callback(int, int, int, int, double, double, double, double, double, double) override;
 
  private:
   bigint did_setup;
diff --git a/src/TALLY/compute_pe_tally.h b/src/TALLY/compute_pe_tally.h
index 8f6f42a685..dfccce5f7e 100644
--- a/src/TALLY/compute_pe_tally.h
+++ b/src/TALLY/compute_pe_tally.h
@@ -28,19 +28,19 @@ class ComputePETally : public Compute {
 
  public:
   ComputePETally(class LAMMPS *, int, char **);
-  virtual ~ComputePETally();
+  ~ComputePETally() override;
 
-  void init();
+  void init() override;
 
-  double compute_scalar();
-  void compute_peratom();
+  double compute_scalar() override;
+  void compute_peratom() override;
 
-  int pack_reverse_comm(int, int, double *);
-  void unpack_reverse_comm(int, int *, double *);
-  double memory_usage();
+  int pack_reverse_comm(int, int, double *) override;
+  void unpack_reverse_comm(int, int *, double *) override;
+  double memory_usage() override;
 
-  void pair_setup_callback(int, int);
-  void pair_tally_callback(int, int, int, int, double, double, double, double, double, double);
+  void pair_setup_callback(int, int) override;
+  void pair_tally_callback(int, int, int, int, double, double, double, double, double, double) override;
 
  private:
   bigint did_setup;
diff --git a/src/TALLY/compute_stress_tally.h b/src/TALLY/compute_stress_tally.h
index 709a8caa8f..9910667df3 100644
--- a/src/TALLY/compute_stress_tally.h
+++ b/src/TALLY/compute_stress_tally.h
@@ -28,19 +28,19 @@ class ComputeStressTally : public Compute {
 
  public:
   ComputeStressTally(class LAMMPS *, int, char **);
-  virtual ~ComputeStressTally();
+  ~ComputeStressTally() override;
 
-  void init();
+  void init() override;
 
-  double compute_scalar();
-  void compute_peratom();
+  double compute_scalar() override;
+  void compute_peratom() override;
 
-  int pack_reverse_comm(int, int, double *);
-  void unpack_reverse_comm(int, int *, double *);
-  double memory_usage();
+  int pack_reverse_comm(int, int, double *) override;
+  void unpack_reverse_comm(int, int *, double *) override;
+  double memory_usage() override;
 
-  void pair_setup_callback(int, int);
-  void pair_tally_callback(int, int, int, int, double, double, double, double, double, double);
+  void pair_setup_callback(int, int) override;
+  void pair_tally_callback(int, int, int, int, double, double, double, double, double, double) override;
 
  private:
   bigint did_setup;
diff --git a/src/UEF/compute_pressure_uef.h b/src/UEF/compute_pressure_uef.h
index cbbd241119..d969f2f7ad 100644
--- a/src/UEF/compute_pressure_uef.h
+++ b/src/UEF/compute_pressure_uef.h
@@ -29,10 +29,10 @@ namespace LAMMPS_NS {
 class ComputePressureUef : public ComputePressure {
  public:
   ComputePressureUef(class LAMMPS *, int, char **);
-  virtual ~ComputePressureUef() {}
-  virtual void init();
-  virtual void compute_vector();
-  virtual double compute_scalar();
+
+  void init() override;
+  void compute_vector() override;
+  double compute_scalar() override;
   void update_rot();
   bool in_fix;    //true if this compute is used in fix/nvt/npt
 
diff --git a/src/UEF/compute_temp_uef.h b/src/UEF/compute_temp_uef.h
index 92e9293040..eb5bdac37d 100644
--- a/src/UEF/compute_temp_uef.h
+++ b/src/UEF/compute_temp_uef.h
@@ -29,9 +29,9 @@ namespace LAMMPS_NS {
 class ComputeTempUef : public ComputeTemp {
  public:
   ComputeTempUef(class LAMMPS *, int, char **);
-  virtual ~ComputeTempUef() {}
-  virtual void init();
-  virtual void compute_vector();
+
+  void init() override;
+  void compute_vector() override;
   void yes_rot();
   void no_rot();
 
diff --git a/src/compute_aggregate_atom.h b/src/compute_aggregate_atom.h
index 9bacf37ae1..dc044c0b1a 100644
--- a/src/compute_aggregate_atom.h
+++ b/src/compute_aggregate_atom.h
@@ -27,15 +27,15 @@ namespace LAMMPS_NS {
 class ComputeAggregateAtom : public Compute {
  public:
   ComputeAggregateAtom(class LAMMPS *, int, char **);
-  ~ComputeAggregateAtom();
-  void init();
-  void init_list(int, class NeighList *);
-  void compute_peratom();
-  int pack_forward_comm(int, int *, double *, int, int *);
-  void unpack_forward_comm(int, int, double *);
-  int pack_reverse_comm(int, int, double *);
-  void unpack_reverse_comm(int, int *, double *);
-  double memory_usage();
+  ~ComputeAggregateAtom() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_peratom() override;
+  int pack_forward_comm(int, int *, double *, int, int *) override;
+  void unpack_forward_comm(int, int, double *) override;
+  int pack_reverse_comm(int, int, double *) override;
+  void unpack_reverse_comm(int, int *, double *) override;
+  double memory_usage() override;
 
  private:
   int nmax, commflag;
diff --git a/src/compute_angle.h b/src/compute_angle.h
index efdbebee10..62a5ea1fdf 100644
--- a/src/compute_angle.h
+++ b/src/compute_angle.h
@@ -27,9 +27,9 @@ namespace LAMMPS_NS {
 class ComputeAngle : public Compute {
  public:
   ComputeAngle(class LAMMPS *, int, char **);
-  ~ComputeAngle();
-  void init();
-  void compute_vector();
+  ~ComputeAngle() override;
+  void init() override;
+  void compute_vector() override;
 
  private:
   int nsub;
diff --git a/src/compute_angle_local.h b/src/compute_angle_local.h
index 3aebfae0a8..bea7b0c682 100644
--- a/src/compute_angle_local.h
+++ b/src/compute_angle_local.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeAngleLocal : public Compute {
  public:
   ComputeAngleLocal(class LAMMPS *, int, char **);
-  ~ComputeAngleLocal();
-  void init();
-  void compute_local();
-  double memory_usage();
+  ~ComputeAngleLocal() override;
+  void init() override;
+  void compute_local() override;
+  double memory_usage() override;
 
  private:
   int nvalues, nvar, ncount, setflag, tflag;
diff --git a/src/compute_angmom_chunk.h b/src/compute_angmom_chunk.h
index 384de5cc33..f401b8abd0 100644
--- a/src/compute_angmom_chunk.h
+++ b/src/compute_angmom_chunk.h
@@ -27,17 +27,17 @@ namespace LAMMPS_NS {
 class ComputeAngmomChunk : public Compute {
  public:
   ComputeAngmomChunk(class LAMMPS *, int, char **);
-  ~ComputeAngmomChunk();
-  void init();
-  void compute_array();
+  ~ComputeAngmomChunk() override;
+  void init() override;
+  void compute_array() override;
 
-  void lock_enable();
-  void lock_disable();
-  int lock_length();
-  void lock(class Fix *, bigint, bigint);
-  void unlock(class Fix *);
+  void lock_enable() override;
+  void lock_disable() override;
+  int lock_length() override;
+  void lock(class Fix *, bigint, bigint) override;
+  void unlock(class Fix *) override;
 
-  double memory_usage();
+  double memory_usage() override;
 
  private:
   int nchunk, maxchunk;
diff --git a/src/compute_bond.h b/src/compute_bond.h
index 174fcb06f3..4981782972 100644
--- a/src/compute_bond.h
+++ b/src/compute_bond.h
@@ -27,9 +27,9 @@ namespace LAMMPS_NS {
 class ComputeBond : public Compute {
  public:
   ComputeBond(class LAMMPS *, int, char **);
-  ~ComputeBond();
-  void init();
-  void compute_vector();
+  ~ComputeBond() override;
+  void init() override;
+  void compute_vector() override;
 
  private:
   int nsub;
diff --git a/src/compute_bond_local.h b/src/compute_bond_local.h
index 5ecbaac2a0..0f028f05e8 100644
--- a/src/compute_bond_local.h
+++ b/src/compute_bond_local.h
@@ -27,12 +27,12 @@ namespace LAMMPS_NS {
 class ComputeBondLocal : public Compute {
  public:
   ComputeBondLocal(class LAMMPS *, int, char **);
-  ~ComputeBondLocal();
-  void init();
-  void compute_local();
-  int pack_forward_comm(int, int *, double *, int, int *);
-  void unpack_forward_comm(int, int, double *);
-  double memory_usage();
+  ~ComputeBondLocal() override;
+  void init() override;
+  void compute_local() override;
+  int pack_forward_comm(int, int *, double *, int, int *) override;
+  void unpack_forward_comm(int, int, double *) override;
+  double memory_usage() override;
 
  private:
   int nvalues, nvar, ncount, setflag;
diff --git a/src/compute_centro_atom.h b/src/compute_centro_atom.h
index c7e66cfad1..8eb1df696b 100644
--- a/src/compute_centro_atom.h
+++ b/src/compute_centro_atom.h
@@ -27,11 +27,11 @@ namespace LAMMPS_NS {
 class ComputeCentroAtom : public Compute {
  public:
   ComputeCentroAtom(class LAMMPS *, int, char **);
-  ~ComputeCentroAtom();
-  void init();
-  void init_list(int, class NeighList *);
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeCentroAtom() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax, maxneigh, nnn;
diff --git a/src/compute_centroid_stress_atom.h b/src/compute_centroid_stress_atom.h
index d332788aa4..429d565419 100644
--- a/src/compute_centroid_stress_atom.h
+++ b/src/compute_centroid_stress_atom.h
@@ -27,12 +27,12 @@ namespace LAMMPS_NS {
 class ComputeCentroidStressAtom : public Compute {
  public:
   ComputeCentroidStressAtom(class LAMMPS *, int, char **);
-  ~ComputeCentroidStressAtom();
-  void init();
-  void compute_peratom();
-  int pack_reverse_comm(int, int, double *);
-  void unpack_reverse_comm(int, int *, double *);
-  double memory_usage();
+  ~ComputeCentroidStressAtom() override;
+  void init() override;
+  void compute_peratom() override;
+  int pack_reverse_comm(int, int, double *) override;
+  void unpack_reverse_comm(int, int *, double *) override;
+  double memory_usage() override;
 
  private:
   int keflag, pairflag, bondflag, angleflag, dihedralflag, improperflag;
diff --git a/src/compute_chunk_atom.h b/src/compute_chunk_atom.h
index e2c3ebe96b..528829f9a5 100644
--- a/src/compute_chunk_atom.h
+++ b/src/compute_chunk_atom.h
@@ -35,16 +35,16 @@ class ComputeChunkAtom : public Compute {
   int *ichunk, *chunkID;
 
   ComputeChunkAtom(class LAMMPS *, int, char **);
-  ~ComputeChunkAtom();
-  void init();
-  void setup();
-  void compute_peratom();
-  double compute_scalar();
-  void set_arrays(int);
-  double memory_usage();
+  ~ComputeChunkAtom() override;
+  void init() override;
+  void setup() override;
+  void compute_peratom() override;
+  double compute_scalar() override;
+  void set_arrays(int) override;
+  double memory_usage() override;
 
-  void lock(class Fix *, bigint, bigint);
-  void unlock(class Fix *);
+  void lock(class Fix *, bigint, bigint) override;
+  void unlock(class Fix *) override;
   int setup_chunks();
   void compute_ichunk();
 
diff --git a/src/compute_chunk_spread_atom.h b/src/compute_chunk_spread_atom.h
index b7cc1d4739..e1e2a2a584 100644
--- a/src/compute_chunk_spread_atom.h
+++ b/src/compute_chunk_spread_atom.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeChunkSpreadAtom : public Compute {
  public:
   ComputeChunkSpreadAtom(class LAMMPS *, int, char **);
-  ~ComputeChunkSpreadAtom();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeChunkSpreadAtom() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  protected:
   int mode, nvalues;
diff --git a/src/compute_cluster_atom.h b/src/compute_cluster_atom.h
index 2f9bd8955c..1d5c03277d 100644
--- a/src/compute_cluster_atom.h
+++ b/src/compute_cluster_atom.h
@@ -27,13 +27,13 @@ namespace LAMMPS_NS {
 class ComputeClusterAtom : public Compute {
  public:
   ComputeClusterAtom(class LAMMPS *, int, char **);
-  ~ComputeClusterAtom();
-  void init();
-  void init_list(int, class NeighList *);
-  void compute_peratom();
-  int pack_forward_comm(int, int *, double *, int, int *);
-  void unpack_forward_comm(int, int, double *);
-  double memory_usage();
+  ~ComputeClusterAtom() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_peratom() override;
+  int pack_forward_comm(int, int *, double *, int, int *) override;
+  void unpack_forward_comm(int, int, double *) override;
+  double memory_usage() override;
 
  private:
   int nmax, commflag;
diff --git a/src/compute_cna_atom.h b/src/compute_cna_atom.h
index 4546a3f66e..eab6fae0f3 100644
--- a/src/compute_cna_atom.h
+++ b/src/compute_cna_atom.h
@@ -27,11 +27,11 @@ namespace LAMMPS_NS {
 class ComputeCNAAtom : public Compute {
  public:
   ComputeCNAAtom(class LAMMPS *, int, char **);
-  ~ComputeCNAAtom();
-  void init();
-  void init_list(int, class NeighList *);
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeCNAAtom() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/compute_com.h b/src/compute_com.h
index 73cd0739e9..762e63d84a 100644
--- a/src/compute_com.h
+++ b/src/compute_com.h
@@ -27,9 +27,9 @@ namespace LAMMPS_NS {
 class ComputeCOM : public Compute {
  public:
   ComputeCOM(class LAMMPS *, int, char **);
-  ~ComputeCOM();
-  void init();
-  void compute_vector();
+  ~ComputeCOM() override;
+  void init() override;
+  void compute_vector() override;
 
  private:
   double masstotal;
diff --git a/src/compute_com_chunk.h b/src/compute_com_chunk.h
index c2aedaabed..78a74a1937 100644
--- a/src/compute_com_chunk.h
+++ b/src/compute_com_chunk.h
@@ -30,18 +30,18 @@ class ComputeCOMChunk : public Compute {
   double *masstotal;
 
   ComputeCOMChunk(class LAMMPS *, int, char **);
-  ~ComputeCOMChunk();
-  void init();
-  void setup();
-  void compute_array();
+  ~ComputeCOMChunk() override;
+  void init() override;
+  void setup() override;
+  void compute_array() override;
 
-  void lock_enable();
-  void lock_disable();
-  int lock_length();
-  void lock(class Fix *, bigint, bigint);
-  void unlock(class Fix *);
+  void lock_enable() override;
+  void lock_disable() override;
+  int lock_length() override;
+  void lock(class Fix *, bigint, bigint) override;
+  void unlock(class Fix *) override;
 
-  double memory_usage();
+  double memory_usage() override;
 
  private:
   int nchunk, maxchunk;
diff --git a/src/compute_coord_atom.h b/src/compute_coord_atom.h
index 9ac0a8c3b3..563baef973 100644
--- a/src/compute_coord_atom.h
+++ b/src/compute_coord_atom.h
@@ -27,13 +27,13 @@ namespace LAMMPS_NS {
 class ComputeCoordAtom : public Compute {
  public:
   ComputeCoordAtom(class LAMMPS *, int, char **);
-  virtual ~ComputeCoordAtom();
-  virtual void init();
-  void init_list(int, class NeighList *);
-  virtual void compute_peratom();
-  int pack_forward_comm(int, int *, double *, int, int *);
-  void unpack_forward_comm(int, int, double *);
-  double memory_usage();
+  ~ComputeCoordAtom() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_peratom() override;
+  int pack_forward_comm(int, int *, double *, int, int *) override;
+  void unpack_forward_comm(int, int, double *) override;
+  double memory_usage() override;
   enum { NONE, CUTOFF, ORIENT };
 
  protected:
diff --git a/src/compute_deprecated.h b/src/compute_deprecated.h
index 74dd997f2a..3770a9978e 100644
--- a/src/compute_deprecated.h
+++ b/src/compute_deprecated.h
@@ -28,8 +28,7 @@ namespace LAMMPS_NS {
 class ComputeDeprecated : public Compute {
  public:
   ComputeDeprecated(class LAMMPS *, int, char **);
-  ~ComputeDeprecated() {}
-  void init() {}
+  void init() override {}
 };
 
 }    // namespace LAMMPS_NS
diff --git a/src/compute_dihedral.h b/src/compute_dihedral.h
index f5bf756d0e..d7e7662ec9 100644
--- a/src/compute_dihedral.h
+++ b/src/compute_dihedral.h
@@ -27,9 +27,9 @@ namespace LAMMPS_NS {
 class ComputeDihedral : public Compute {
  public:
   ComputeDihedral(class LAMMPS *, int, char **);
-  ~ComputeDihedral();
-  void init();
-  void compute_vector();
+  ~ComputeDihedral() override;
+  void init() override;
+  void compute_vector() override;
 
  private:
   int nsub;
diff --git a/src/compute_dihedral_local.h b/src/compute_dihedral_local.h
index a74d277776..99274a7265 100644
--- a/src/compute_dihedral_local.h
+++ b/src/compute_dihedral_local.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeDihedralLocal : public Compute {
  public:
   ComputeDihedralLocal(class LAMMPS *, int, char **);
-  ~ComputeDihedralLocal();
-  void init();
-  void compute_local();
-  double memory_usage();
+  ~ComputeDihedralLocal() override;
+  void init() override;
+  void compute_local() override;
+  double memory_usage() override;
 
  private:
   int nvalues, nvar, ncount, setflag;
diff --git a/src/compute_dipole.h b/src/compute_dipole.h
index 39dcd929e9..9e16f6c998 100644
--- a/src/compute_dipole.h
+++ b/src/compute_dipole.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeDipole : public Compute {
  public:
   ComputeDipole(class LAMMPS *, int, char **);
-  virtual ~ComputeDipole();
-  void init(){};
-  void compute_vector();
-  double compute_scalar();
+  ~ComputeDipole() override;
+  void init() override{};
+  void compute_vector() override;
+  double compute_scalar() override;
 
  private:
   int usecenter;
diff --git a/src/compute_dipole_chunk.h b/src/compute_dipole_chunk.h
index b44852d543..fbe97c481b 100644
--- a/src/compute_dipole_chunk.h
+++ b/src/compute_dipole_chunk.h
@@ -27,17 +27,17 @@ namespace LAMMPS_NS {
 class ComputeDipoleChunk : public Compute {
  public:
   ComputeDipoleChunk(class LAMMPS *, int, char **);
-  ~ComputeDipoleChunk();
-  void init();
-  void compute_array();
+  ~ComputeDipoleChunk() override;
+  void init() override;
+  void compute_array() override;
 
-  void lock_enable();
-  void lock_disable();
-  int lock_length();
-  void lock(class Fix *, bigint, bigint);
-  void unlock(class Fix *);
+  void lock_enable() override;
+  void lock_disable() override;
+  int lock_length() override;
+  void lock(class Fix *, bigint, bigint) override;
+  void unlock(class Fix *) override;
 
-  double memory_usage();
+  double memory_usage() override;
 
  private:
   int nchunk, maxchunk;
diff --git a/src/compute_displace_atom.h b/src/compute_displace_atom.h
index 79e0a67f7a..4eac39d5b0 100644
--- a/src/compute_displace_atom.h
+++ b/src/compute_displace_atom.h
@@ -27,12 +27,12 @@ namespace LAMMPS_NS {
 class ComputeDisplaceAtom : public Compute {
  public:
   ComputeDisplaceAtom(class LAMMPS *, int, char **);
-  ~ComputeDisplaceAtom();
-  void init();
-  void compute_peratom();
-  void set_arrays(int);
-  void refresh();
-  double memory_usage();
+  ~ComputeDisplaceAtom() override;
+  void init() override;
+  void compute_peratom() override;
+  void set_arrays(int) override;
+  void refresh() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/compute_erotate_sphere.h b/src/compute_erotate_sphere.h
index 09f0604dbd..3fb47afbe8 100644
--- a/src/compute_erotate_sphere.h
+++ b/src/compute_erotate_sphere.h
@@ -27,9 +27,9 @@ namespace LAMMPS_NS {
 class ComputeERotateSphere : public Compute {
  public:
   ComputeERotateSphere(class LAMMPS *, int, char **);
-  ~ComputeERotateSphere() {}
-  void init();
-  double compute_scalar();
+  ~ComputeERotateSphere() override {}
+  void init() override;
+  double compute_scalar() override;
 
  private:
   double pfactor;
diff --git a/src/compute_erotate_sphere_atom.h b/src/compute_erotate_sphere_atom.h
index b44576d523..5ec58d44be 100644
--- a/src/compute_erotate_sphere_atom.h
+++ b/src/compute_erotate_sphere_atom.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeErotateSphereAtom : public Compute {
  public:
   ComputeErotateSphereAtom(class LAMMPS *, int, char **);
-  ~ComputeErotateSphereAtom();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeErotateSphereAtom() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/compute_fragment_atom.h b/src/compute_fragment_atom.h
index 4cf7478d61..5ba430ee30 100644
--- a/src/compute_fragment_atom.h
+++ b/src/compute_fragment_atom.h
@@ -27,12 +27,12 @@ namespace LAMMPS_NS {
 class ComputeFragmentAtom : public Compute {
  public:
   ComputeFragmentAtom(class LAMMPS *, int, char **);
-  ~ComputeFragmentAtom();
-  void init();
-  void compute_peratom();
-  int pack_forward_comm(int, int *, double *, int, int *);
-  void unpack_forward_comm(int, int, double *);
-  double memory_usage();
+  ~ComputeFragmentAtom() override;
+  void init() override;
+  void compute_peratom() override;
+  int pack_forward_comm(int, int *, double *, int, int *) override;
+  void unpack_forward_comm(int, int, double *) override;
+  double memory_usage() override;
 
  private:
   int nmax, commflag, singleflag;
diff --git a/src/compute_global_atom.h b/src/compute_global_atom.h
index 4f5d5ea00d..1cf9a7322a 100644
--- a/src/compute_global_atom.h
+++ b/src/compute_global_atom.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeGlobalAtom : public Compute {
  public:
   ComputeGlobalAtom(class LAMMPS *, int, char **);
-  virtual ~ComputeGlobalAtom();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeGlobalAtom() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  protected:
   int whichref, indexref, ref2index;
diff --git a/src/compute_group_group.h b/src/compute_group_group.h
index 1a34a19fe6..c5505f51ee 100644
--- a/src/compute_group_group.h
+++ b/src/compute_group_group.h
@@ -27,11 +27,11 @@ namespace LAMMPS_NS {
 class ComputeGroupGroup : public Compute {
  public:
   ComputeGroupGroup(class LAMMPS *, int, char **);
-  ~ComputeGroupGroup();
-  void init();
-  void init_list(int, class NeighList *);
-  double compute_scalar();
-  void compute_vector();
+  ~ComputeGroupGroup() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  double compute_scalar() override;
+  void compute_vector() override;
 
  private:
   char *group2;
diff --git a/src/compute_gyration.h b/src/compute_gyration.h
index 2eccb46409..f6dd748640 100644
--- a/src/compute_gyration.h
+++ b/src/compute_gyration.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeGyration : public Compute {
  public:
   ComputeGyration(class LAMMPS *, int, char **);
-  ~ComputeGyration();
-  void init();
-  double compute_scalar();
-  void compute_vector();
+  ~ComputeGyration() override;
+  void init() override;
+  double compute_scalar() override;
+  void compute_vector() override;
 
  private:
   double masstotal;
diff --git a/src/compute_gyration_chunk.h b/src/compute_gyration_chunk.h
index 1ac6fec341..ce990c9416 100644
--- a/src/compute_gyration_chunk.h
+++ b/src/compute_gyration_chunk.h
@@ -27,18 +27,18 @@ namespace LAMMPS_NS {
 class ComputeGyrationChunk : public Compute {
  public:
   ComputeGyrationChunk(class LAMMPS *, int, char **);
-  ~ComputeGyrationChunk();
-  void init();
-  void compute_vector();
-  void compute_array();
+  ~ComputeGyrationChunk() override;
+  void init() override;
+  void compute_vector() override;
+  void compute_array() override;
 
-  void lock_enable();
-  void lock_disable();
-  int lock_length();
-  void lock(class Fix *, bigint, bigint);
-  void unlock(class Fix *);
+  void lock_enable() override;
+  void lock_disable() override;
+  int lock_length() override;
+  void lock(class Fix *, bigint, bigint) override;
+  void unlock(class Fix *) override;
 
-  double memory_usage();
+  double memory_usage() override;
 
  private:
   int nchunk, maxchunk;
diff --git a/src/compute_heat_flux.h b/src/compute_heat_flux.h
index d8466106e3..bdfc8252a3 100644
--- a/src/compute_heat_flux.h
+++ b/src/compute_heat_flux.h
@@ -27,9 +27,9 @@ namespace LAMMPS_NS {
 class ComputeHeatFlux : public Compute {
  public:
   ComputeHeatFlux(class LAMMPS *, int, char **);
-  ~ComputeHeatFlux();
-  void init();
-  void compute_vector();
+  ~ComputeHeatFlux() override;
+  void init() override;
+  void compute_vector() override;
 
  private:
   char *id_ke, *id_pe, *id_stress;
diff --git a/src/compute_improper.h b/src/compute_improper.h
index 4d7597bcd2..ddafc50e4e 100644
--- a/src/compute_improper.h
+++ b/src/compute_improper.h
@@ -27,9 +27,9 @@ namespace LAMMPS_NS {
 class ComputeImproper : public Compute {
  public:
   ComputeImproper(class LAMMPS *, int, char **);
-  ~ComputeImproper();
-  void init();
-  void compute_vector();
+  ~ComputeImproper() override;
+  void init() override;
+  void compute_vector() override;
 
  private:
   int nsub;
diff --git a/src/compute_improper_local.h b/src/compute_improper_local.h
index 7fe64d12c3..ff27dde4e9 100644
--- a/src/compute_improper_local.h
+++ b/src/compute_improper_local.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeImproperLocal : public Compute {
  public:
   ComputeImproperLocal(class LAMMPS *, int, char **);
-  ~ComputeImproperLocal();
-  void init();
-  void compute_local();
-  double memory_usage();
+  ~ComputeImproperLocal() override;
+  void init() override;
+  void compute_local() override;
+  double memory_usage() override;
 
  private:
   int nvalues, cflag;
diff --git a/src/compute_inertia_chunk.h b/src/compute_inertia_chunk.h
index 8f8a1c522d..87e6bedb78 100644
--- a/src/compute_inertia_chunk.h
+++ b/src/compute_inertia_chunk.h
@@ -27,17 +27,17 @@ namespace LAMMPS_NS {
 class ComputeInertiaChunk : public Compute {
  public:
   ComputeInertiaChunk(class LAMMPS *, int, char **);
-  ~ComputeInertiaChunk();
-  void init();
-  void compute_array();
+  ~ComputeInertiaChunk() override;
+  void init() override;
+  void compute_array() override;
 
-  void lock_enable();
-  void lock_disable();
-  int lock_length();
-  void lock(class Fix *, bigint, bigint);
-  void unlock(class Fix *);
+  void lock_enable() override;
+  void lock_disable() override;
+  int lock_length() override;
+  void lock(class Fix *, bigint, bigint) override;
+  void unlock(class Fix *) override;
 
-  double memory_usage();
+  double memory_usage() override;
 
  private:
   int nchunk, maxchunk;
diff --git a/src/compute_ke.h b/src/compute_ke.h
index f9043e2a84..b84ffde1ef 100644
--- a/src/compute_ke.h
+++ b/src/compute_ke.h
@@ -27,8 +27,8 @@ namespace LAMMPS_NS {
 class ComputeKE : public Compute {
  public:
   ComputeKE(class LAMMPS *, int, char **);
-  void init();
-  double compute_scalar();
+  void init() override;
+  double compute_scalar() override;
 
  private:
   double pfactor;
diff --git a/src/compute_ke_atom.h b/src/compute_ke_atom.h
index e676dec920..8b773f7f24 100644
--- a/src/compute_ke_atom.h
+++ b/src/compute_ke_atom.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeKEAtom : public Compute {
  public:
   ComputeKEAtom(class LAMMPS *, int, char **);
-  ~ComputeKEAtom();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputeKEAtom() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nmax;
diff --git a/src/compute_msd.h b/src/compute_msd.h
index 9649559756..33338b86d4 100644
--- a/src/compute_msd.h
+++ b/src/compute_msd.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeMSD : public Compute {
  public:
   ComputeMSD(class LAMMPS *, int, char **);
-  virtual ~ComputeMSD();
-  void init();
-  virtual void compute_vector();
-  void set_arrays(int);
+  ~ComputeMSD() override;
+  void init() override;
+  void compute_vector() override;
+  void set_arrays(int) override;
 
  protected:
   int comflag;     // comflag = 1 if reference moves with center of mass
diff --git a/src/compute_msd_chunk.h b/src/compute_msd_chunk.h
index 3dbf994909..18fd91b6d5 100644
--- a/src/compute_msd_chunk.h
+++ b/src/compute_msd_chunk.h
@@ -27,18 +27,18 @@ namespace LAMMPS_NS {
 class ComputeMSDChunk : public Compute {
  public:
   ComputeMSDChunk(class LAMMPS *, int, char **);
-  ~ComputeMSDChunk();
-  void init();
-  void setup();
-  void compute_array();
+  ~ComputeMSDChunk() override;
+  void init() override;
+  void setup() override;
+  void compute_array() override;
 
-  void lock_enable();
-  void lock_disable();
-  int lock_length();
-  void lock(class Fix *, bigint, bigint);
-  void unlock(class Fix *);
+  void lock_enable() override;
+  void lock_disable() override;
+  int lock_length() override;
+  void lock(class Fix *, bigint, bigint) override;
+  void unlock(class Fix *) override;
 
-  double memory_usage();
+  double memory_usage() override;
 
  private:
   int nchunk;
diff --git a/src/compute_omega_chunk.h b/src/compute_omega_chunk.h
index f1fc87f0ed..b058796067 100644
--- a/src/compute_omega_chunk.h
+++ b/src/compute_omega_chunk.h
@@ -27,17 +27,17 @@ namespace LAMMPS_NS {
 class ComputeOmegaChunk : public Compute {
  public:
   ComputeOmegaChunk(class LAMMPS *, int, char **);
-  ~ComputeOmegaChunk();
-  void init();
-  void compute_array();
+  ~ComputeOmegaChunk() override;
+  void init() override;
+  void compute_array() override;
 
-  void lock_enable();
-  void lock_disable();
-  int lock_length();
-  void lock(class Fix *, bigint, bigint);
-  void unlock(class Fix *);
+  void lock_enable() override;
+  void lock_disable() override;
+  int lock_length() override;
+  void lock(class Fix *, bigint, bigint) override;
+  void unlock(class Fix *) override;
 
-  double memory_usage();
+  double memory_usage() override;
 
  private:
   int nchunk, maxchunk;
diff --git a/src/compute_orientorder_atom.h b/src/compute_orientorder_atom.h
index 3394feb4ab..b88b01fbc9 100644
--- a/src/compute_orientorder_atom.h
+++ b/src/compute_orientorder_atom.h
@@ -27,11 +27,11 @@ namespace LAMMPS_NS {
 class ComputeOrientOrderAtom : public Compute {
  public:
   ComputeOrientOrderAtom(class LAMMPS *, int, char **);
-  ~ComputeOrientOrderAtom();
-  virtual void init();
-  void init_list(int, class NeighList *);
-  virtual void compute_peratom();
-  double memory_usage();
+  ~ComputeOrientOrderAtom() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_peratom() override;
+  double memory_usage() override;
   double cutsq;
   int iqlcomp, qlcomp, qlcompflag, wlflag, wlhatflag;
   int *qlist;
diff --git a/src/compute_pair.h b/src/compute_pair.h
index c2de4b7bc4..5918f89111 100644
--- a/src/compute_pair.h
+++ b/src/compute_pair.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputePair : public Compute {
  public:
   ComputePair(class LAMMPS *, int, char **);
-  ~ComputePair();
-  void init();
-  double compute_scalar();
-  void compute_vector();
+  ~ComputePair() override;
+  void init() override;
+  double compute_scalar() override;
+  void compute_vector() override;
 
  private:
   int evalue, npair, nsub;
diff --git a/src/compute_pair_local.h b/src/compute_pair_local.h
index 8a3f5860fd..1d356c71a2 100644
--- a/src/compute_pair_local.h
+++ b/src/compute_pair_local.h
@@ -27,11 +27,11 @@ namespace LAMMPS_NS {
 class ComputePairLocal : public Compute {
  public:
   ComputePairLocal(class LAMMPS *, int, char **);
-  ~ComputePairLocal();
-  void init();
-  void init_list(int, class NeighList *);
-  void compute_local();
-  double memory_usage();
+  ~ComputePairLocal() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_local() override;
+  double memory_usage() override;
 
  private:
   int nvalues, ncount, cutstyle;
diff --git a/src/compute_pe.h b/src/compute_pe.h
index 7dbced863d..31e4747850 100644
--- a/src/compute_pe.h
+++ b/src/compute_pe.h
@@ -27,9 +27,8 @@ namespace LAMMPS_NS {
 class ComputePE : public Compute {
  public:
   ComputePE(class LAMMPS *, int, char **);
-  ~ComputePE() {}
-  void init() {}
-  double compute_scalar();
+  void init() override {}
+  double compute_scalar() override;
 
  private:
   int pairflag, bondflag, angleflag, dihedralflag, improperflag, kspaceflag, fixflag;
diff --git a/src/compute_pe_atom.h b/src/compute_pe_atom.h
index 57015550ac..b89be3e853 100644
--- a/src/compute_pe_atom.h
+++ b/src/compute_pe_atom.h
@@ -27,12 +27,12 @@ namespace LAMMPS_NS {
 class ComputePEAtom : public Compute {
  public:
   ComputePEAtom(class LAMMPS *, int, char **);
-  ~ComputePEAtom();
-  void init() {}
-  void compute_peratom();
-  int pack_reverse_comm(int, int, double *);
-  void unpack_reverse_comm(int, int *, double *);
-  double memory_usage();
+  ~ComputePEAtom() override;
+  void init() override {}
+  void compute_peratom() override;
+  int pack_reverse_comm(int, int, double *) override;
+  void unpack_reverse_comm(int, int *, double *) override;
+  double memory_usage() override;
 
  private:
   int pairflag, bondflag, angleflag, dihedralflag, improperflag;
diff --git a/src/compute_pressure.h b/src/compute_pressure.h
index f0dcda7330..ebffd3a4fc 100644
--- a/src/compute_pressure.h
+++ b/src/compute_pressure.h
@@ -27,11 +27,11 @@ namespace LAMMPS_NS {
 class ComputePressure : public Compute {
  public:
   ComputePressure(class LAMMPS *, int, char **);
-  virtual ~ComputePressure();
-  virtual void init();
-  virtual double compute_scalar();
-  virtual void compute_vector();
-  void reset_extra_compute_fix(const char *);
+  ~ComputePressure() override;
+  void init() override;
+  double compute_scalar() override;
+  void compute_vector() override;
+  void reset_extra_compute_fix(const char *) override;
 
  protected:
   double boltz, nktv2p, inv_volume;
diff --git a/src/compute_property_atom.h b/src/compute_property_atom.h
index 5a7fe787bd..903fece488 100644
--- a/src/compute_property_atom.h
+++ b/src/compute_property_atom.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputePropertyAtom : public Compute {
  public:
   ComputePropertyAtom(class LAMMPS *, int, char **);
-  ~ComputePropertyAtom();
-  void init();
-  void compute_peratom();
-  double memory_usage();
+  ~ComputePropertyAtom() override;
+  void init() override;
+  void compute_peratom() override;
+  double memory_usage() override;
 
  private:
   int nvalues;
diff --git a/src/compute_property_chunk.h b/src/compute_property_chunk.h
index 2f882f1930..83db5d6256 100644
--- a/src/compute_property_chunk.h
+++ b/src/compute_property_chunk.h
@@ -27,18 +27,18 @@ namespace LAMMPS_NS {
 class ComputePropertyChunk : public Compute {
  public:
   ComputePropertyChunk(class LAMMPS *, int, char **);
-  ~ComputePropertyChunk();
-  void init();
-  void compute_vector();
-  void compute_array();
+  ~ComputePropertyChunk() override;
+  void init() override;
+  void compute_vector() override;
+  void compute_array() override;
 
-  void lock_enable();
-  void lock_disable();
-  int lock_length();
-  void lock(class Fix *, bigint, bigint);
-  void unlock(class Fix *);
+  void lock_enable() override;
+  void lock_disable() override;
+  int lock_length() override;
+  void lock(class Fix *, bigint, bigint) override;
+  void unlock(class Fix *) override;
 
-  double memory_usage();
+  double memory_usage() override;
 
  private:
   int nchunk, maxchunk;
diff --git a/src/compute_property_local.h b/src/compute_property_local.h
index 419c31eeb2..eec8e8ce94 100644
--- a/src/compute_property_local.h
+++ b/src/compute_property_local.h
@@ -27,11 +27,11 @@ namespace LAMMPS_NS {
 class ComputePropertyLocal : public Compute {
  public:
   ComputePropertyLocal(class LAMMPS *, int, char **);
-  ~ComputePropertyLocal();
-  void init();
-  void init_list(int, class NeighList *);
-  void compute_local();
-  double memory_usage();
+  ~ComputePropertyLocal() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_local() override;
+  double memory_usage() override;
 
  private:
   int nvalues, kindflag, cutstyle;
diff --git a/src/compute_rdf.h b/src/compute_rdf.h
index 4a0de6522f..77dd0cc0c7 100644
--- a/src/compute_rdf.h
+++ b/src/compute_rdf.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeRDF : public Compute {
  public:
   ComputeRDF(class LAMMPS *, int, char **);
-  ~ComputeRDF();
-  void init();
-  void init_list(int, class NeighList *);
-  void compute_array();
+  ~ComputeRDF() override;
+  void init() override;
+  void init_list(int, class NeighList *) override;
+  void compute_array() override;
 
  private:
   int nbin;                // # of rdf bins
diff --git a/src/compute_reduce.h b/src/compute_reduce.h
index 24745a456a..ac2b1e60a2 100644
--- a/src/compute_reduce.h
+++ b/src/compute_reduce.h
@@ -30,11 +30,11 @@ class ComputeReduce : public Compute {
   enum { PERATOM, LOCAL };
 
   ComputeReduce(class LAMMPS *, int, char **);
-  virtual ~ComputeReduce();
-  void init();
-  double compute_scalar();
-  void compute_vector();
-  double memory_usage();
+  ~ComputeReduce() override;
+  void init() override;
+  double compute_scalar() override;
+  void compute_vector() override;
+  double memory_usage() override;
 
  protected:
   int me;
diff --git a/src/compute_reduce_chunk.h b/src/compute_reduce_chunk.h
index 350db72df7..b595558bc7 100644
--- a/src/compute_reduce_chunk.h
+++ b/src/compute_reduce_chunk.h
@@ -27,18 +27,18 @@ namespace LAMMPS_NS {
 class ComputeReduceChunk : public Compute {
  public:
   ComputeReduceChunk(class LAMMPS *, int, char **);
-  ~ComputeReduceChunk();
-  void init();
-  void compute_vector();
-  void compute_array();
+  ~ComputeReduceChunk() override;
+  void init() override;
+  void compute_vector() override;
+  void compute_array() override;
 
-  void lock_enable();
-  void lock_disable();
-  int lock_length();
-  void lock(class Fix *, bigint, bigint);
-  void unlock(class Fix *);
+  void lock_enable() override;
+  void lock_disable() override;
+  int lock_length() override;
+  void lock(class Fix *, bigint, bigint) override;
+  void unlock(class Fix *) override;
 
-  double memory_usage();
+  double memory_usage() override;
 
  private:
   int mode, nvalues;
diff --git a/src/compute_reduce_region.h b/src/compute_reduce_region.h
index 08d7e9a55f..04dd8b82e8 100644
--- a/src/compute_reduce_region.h
+++ b/src/compute_reduce_region.h
@@ -27,11 +27,10 @@ namespace LAMMPS_NS {
 class ComputeReduceRegion : public ComputeReduce {
  public:
   ComputeReduceRegion(class LAMMPS *, int, char **);
-  ~ComputeReduceRegion() {}
 
  private:
-  double compute_one(int, int);
-  bigint count(int);
+  double compute_one(int, int) override;
+  bigint count(int) override;
 };
 
 }    // namespace LAMMPS_NS
diff --git a/src/compute_slice.h b/src/compute_slice.h
index cd70516f11..742f5a9b10 100644
--- a/src/compute_slice.h
+++ b/src/compute_slice.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeSlice : public Compute {
  public:
   ComputeSlice(class LAMMPS *, int, char **);
-  virtual ~ComputeSlice();
-  void init();
-  void compute_vector();
-  void compute_array();
+  ~ComputeSlice() override;
+  void init() override;
+  void compute_vector() override;
+  void compute_array() override;
 
  private:
   int me;
diff --git a/src/compute_stress_atom.h b/src/compute_stress_atom.h
index 4d126df0b4..4f636ed9bd 100644
--- a/src/compute_stress_atom.h
+++ b/src/compute_stress_atom.h
@@ -27,12 +27,12 @@ namespace LAMMPS_NS {
 class ComputeStressAtom : public Compute {
  public:
   ComputeStressAtom(class LAMMPS *, int, char **);
-  ~ComputeStressAtom();
-  void init();
-  void compute_peratom();
-  int pack_reverse_comm(int, int, double *);
-  void unpack_reverse_comm(int, int *, double *);
-  double memory_usage();
+  ~ComputeStressAtom() override;
+  void init() override;
+  void compute_peratom() override;
+  int pack_reverse_comm(int, int, double *) override;
+  void unpack_reverse_comm(int, int *, double *) override;
+  double memory_usage() override;
 
  private:
   int keflag, pairflag, bondflag, angleflag, dihedralflag, improperflag;
diff --git a/src/compute_temp.h b/src/compute_temp.h
index efc7ff2ab0..674144be83 100644
--- a/src/compute_temp.h
+++ b/src/compute_temp.h
@@ -27,11 +27,11 @@ namespace LAMMPS_NS {
 class ComputeTemp : public Compute {
  public:
   ComputeTemp(class LAMMPS *, int, char **);
-  virtual ~ComputeTemp();
-  void init() {}
-  void setup();
-  virtual double compute_scalar();
-  virtual void compute_vector();
+  ~ComputeTemp() override;
+  void init() override {}
+  void setup() override;
+  double compute_scalar() override;
+  void compute_vector() override;
 
  protected:
   double tfactor;
diff --git a/src/compute_temp_chunk.h b/src/compute_temp_chunk.h
index 7a84cad902..b283de9dbc 100644
--- a/src/compute_temp_chunk.h
+++ b/src/compute_temp_chunk.h
@@ -27,24 +27,24 @@ namespace LAMMPS_NS {
 class ComputeTempChunk : public Compute {
  public:
   ComputeTempChunk(class LAMMPS *, int, char **);
-  ~ComputeTempChunk();
-  void init();
-  double compute_scalar();
-  void compute_vector();
-  void compute_array();
+  ~ComputeTempChunk() override;
+  void init() override;
+  double compute_scalar() override;
+  void compute_vector() override;
+  void compute_array() override;
 
-  void remove_bias(int, double *);
-  void remove_bias_all();
-  void restore_bias(int, double *);
-  void restore_bias_all();
+  void remove_bias(int, double *) override;
+  void remove_bias_all() override;
+  void restore_bias(int, double *) override;
+  void restore_bias_all() override;
 
-  void lock_enable();
-  void lock_disable();
-  int lock_length();
-  void lock(class Fix *, bigint, bigint);
-  void unlock(class Fix *);
+  void lock_enable() override;
+  void lock_disable() override;
+  int lock_length() override;
+  void lock(class Fix *, bigint, bigint) override;
+  void unlock(class Fix *) override;
 
-  double memory_usage();
+  double memory_usage() override;
 
  private:
   int nchunk, maxchunk, comflag, biasflag;
diff --git a/src/compute_temp_com.h b/src/compute_temp_com.h
index 3887bcdbd2..595c50502d 100644
--- a/src/compute_temp_com.h
+++ b/src/compute_temp_com.h
@@ -27,18 +27,18 @@ namespace LAMMPS_NS {
 class ComputeTempCOM : public Compute {
  public:
   ComputeTempCOM(class LAMMPS *, int, char **);
-  ~ComputeTempCOM();
-  void init();
-  void setup();
-  double compute_scalar();
-  void compute_vector();
+  ~ComputeTempCOM() override;
+  void init() override;
+  void setup() override;
+  double compute_scalar() override;
+  void compute_vector() override;
 
-  void remove_bias(int, double *);
-  void remove_bias_thr(int, double *, double *);
-  void remove_bias_all();
-  void restore_bias(int, double *);
-  void restore_bias_all();
-  void restore_bias_thr(int, double *, double *);
+  void remove_bias(int, double *) override;
+  void remove_bias_thr(int, double *, double *) override;
+  void remove_bias_all() override;
+  void restore_bias(int, double *) override;
+  void restore_bias_all() override;
+  void restore_bias_thr(int, double *, double *) override;
 
  private:
   double tfactor, masstotal;
diff --git a/src/compute_temp_deform.h b/src/compute_temp_deform.h
index 572d09d041..a120108669 100644
--- a/src/compute_temp_deform.h
+++ b/src/compute_temp_deform.h
@@ -27,19 +27,19 @@ namespace LAMMPS_NS {
 class ComputeTempDeform : public Compute {
  public:
   ComputeTempDeform(class LAMMPS *, int, char **);
-  virtual ~ComputeTempDeform();
-  void init();
-  void setup();
-  virtual double compute_scalar();
-  virtual void compute_vector();
+  ~ComputeTempDeform() override;
+  void init() override;
+  void setup() override;
+  double compute_scalar() override;
+  void compute_vector() override;
 
-  void remove_bias(int, double *);
-  void remove_bias_thr(int, double *, double *);
-  void remove_bias_all();
-  void restore_bias(int, double *);
-  void restore_bias_thr(int, double *, double *);
-  void restore_bias_all();
-  double memory_usage();
+  void remove_bias(int, double *) override;
+  void remove_bias_thr(int, double *, double *) override;
+  void remove_bias_all() override;
+  void restore_bias(int, double *) override;
+  void restore_bias_thr(int, double *, double *) override;
+  void restore_bias_all() override;
+  double memory_usage() override;
 
  protected:
   double tfactor;
diff --git a/src/compute_temp_partial.h b/src/compute_temp_partial.h
index 8021e8cc57..55c7ceb5e8 100644
--- a/src/compute_temp_partial.h
+++ b/src/compute_temp_partial.h
@@ -27,21 +27,21 @@ namespace LAMMPS_NS {
 class ComputeTempPartial : public Compute {
  public:
   ComputeTempPartial(class LAMMPS *, int, char **);
-  virtual ~ComputeTempPartial();
-  void init() {}
-  void setup();
-  double compute_scalar();
-  void compute_vector();
+  ~ComputeTempPartial() override;
+  void init() override {}
+  void setup() override;
+  double compute_scalar() override;
+  void compute_vector() override;
 
-  int dof_remove(int);
-  void remove_bias(int, double *);
-  void remove_bias_thr(int, double *, double *);
-  void remove_bias_all();
-  void reapply_bias_all();
-  void restore_bias(int, double *);
-  void restore_bias_thr(int, double *, double *);
-  void restore_bias_all();
-  double memory_usage();
+  int dof_remove(int) override;
+  void remove_bias(int, double *) override;
+  void remove_bias_thr(int, double *, double *) override;
+  void remove_bias_all() override;
+  void reapply_bias_all() override;
+  void restore_bias(int, double *) override;
+  void restore_bias_thr(int, double *, double *) override;
+  void restore_bias_all() override;
+  double memory_usage() override;
 
  protected:
   int xflag, yflag, zflag;
diff --git a/src/compute_temp_profile.h b/src/compute_temp_profile.h
index 9cad1f26ec..f9f2e42156 100644
--- a/src/compute_temp_profile.h
+++ b/src/compute_temp_profile.h
@@ -27,20 +27,20 @@ namespace LAMMPS_NS {
 class ComputeTempProfile : public Compute {
  public:
   ComputeTempProfile(class LAMMPS *, int, char **);
-  ~ComputeTempProfile();
-  void init();
-  void setup();
-  double compute_scalar();
-  void compute_vector();
-  void compute_array();
+  ~ComputeTempProfile() override;
+  void init() override;
+  void setup() override;
+  double compute_scalar() override;
+  void compute_vector() override;
+  void compute_array() override;
 
-  void remove_bias(int, double *);
-  void remove_bias_thr(int, double *, double *);
-  void remove_bias_all();
-  void restore_bias(int, double *);
-  void restore_bias_thr(int, double *, double *);
-  void restore_bias_all();
-  double memory_usage();
+  void remove_bias(int, double *) override;
+  void remove_bias_thr(int, double *, double *) override;
+  void remove_bias_all() override;
+  void restore_bias(int, double *) override;
+  void restore_bias_thr(int, double *, double *) override;
+  void restore_bias_all() override;
+  double memory_usage() override;
 
  private:
   int xflag, yflag, zflag, ncount, outflag;
diff --git a/src/compute_temp_ramp.h b/src/compute_temp_ramp.h
index 55fc989c3c..e2d790fff1 100644
--- a/src/compute_temp_ramp.h
+++ b/src/compute_temp_ramp.h
@@ -27,19 +27,19 @@ namespace LAMMPS_NS {
 class ComputeTempRamp : public Compute {
  public:
   ComputeTempRamp(class LAMMPS *, int, char **);
-  ~ComputeTempRamp();
-  void init() {}
-  void setup();
-  double compute_scalar();
-  void compute_vector();
+  ~ComputeTempRamp() override;
+  void init() override {}
+  void setup() override;
+  double compute_scalar() override;
+  void compute_vector() override;
 
-  void remove_bias(int, double *);
-  void remove_bias_all();
-  void remove_bias_thr(int, double *, double *);
-  void restore_bias(int, double *);
-  void restore_bias_thr(int, double *, double *);
-  void restore_bias_all();
-  double memory_usage();
+  void remove_bias(int, double *) override;
+  void remove_bias_all() override;
+  void remove_bias_thr(int, double *, double *) override;
+  void restore_bias(int, double *) override;
+  void restore_bias_thr(int, double *, double *) override;
+  void restore_bias_all() override;
+  double memory_usage() override;
 
  private:
   int coord_dim;
diff --git a/src/compute_temp_region.h b/src/compute_temp_region.h
index ba730f91ab..8129f01023 100644
--- a/src/compute_temp_region.h
+++ b/src/compute_temp_region.h
@@ -27,22 +27,22 @@ namespace LAMMPS_NS {
 class ComputeTempRegion : public Compute {
  public:
   ComputeTempRegion(class LAMMPS *, int, char **);
-  virtual ~ComputeTempRegion();
-  void init();
-  void setup();
-  virtual double compute_scalar();
-  virtual void compute_vector();
+  ~ComputeTempRegion() override;
+  void init() override;
+  void setup() override;
+  double compute_scalar() override;
+  void compute_vector() override;
 
-  void dof_remove_pre();
-  int dof_remove(int);
+  void dof_remove_pre() override;
+  int dof_remove(int) override;
 
-  void remove_bias(int, double *);
-  void remove_bias_thr(int, double *, double *);
-  void remove_bias_all();
-  void restore_bias(int, double *);
-  void restore_bias_all();
-  void restore_bias_thr(int, double *, double *);
-  double memory_usage();
+  void remove_bias(int, double *) override;
+  void remove_bias_thr(int, double *, double *) override;
+  void remove_bias_all() override;
+  void restore_bias(int, double *) override;
+  void restore_bias_all() override;
+  void restore_bias_thr(int, double *, double *) override;
+  double memory_usage() override;
 
  protected:
   int iregion;
diff --git a/src/compute_temp_sphere.h b/src/compute_temp_sphere.h
index 0e0ae0bc59..7b91a890a2 100644
--- a/src/compute_temp_sphere.h
+++ b/src/compute_temp_sphere.h
@@ -27,16 +27,16 @@ namespace LAMMPS_NS {
 class ComputeTempSphere : public Compute {
  public:
   ComputeTempSphere(class LAMMPS *, int, char **);
-  ~ComputeTempSphere();
-  void init();
-  void setup();
-  double compute_scalar();
-  void compute_vector();
+  ~ComputeTempSphere() override;
+  void init() override;
+  void setup() override;
+  double compute_scalar() override;
+  void compute_vector() override;
 
-  void remove_bias(int, double *);
-  void remove_bias_thr(int, double *, double *);
-  void restore_bias(int, double *);
-  void restore_bias_thr(int, double *, double *);
+  void remove_bias(int, double *) override;
+  void remove_bias_thr(int, double *, double *) override;
+  void restore_bias(int, double *) override;
+  void restore_bias_thr(int, double *, double *) override;
 
  private:
   int mode;
diff --git a/src/compute_torque_chunk.h b/src/compute_torque_chunk.h
index 928af35236..a1fce2d0d4 100644
--- a/src/compute_torque_chunk.h
+++ b/src/compute_torque_chunk.h
@@ -27,17 +27,17 @@ namespace LAMMPS_NS {
 class ComputeTorqueChunk : public Compute {
  public:
   ComputeTorqueChunk(class LAMMPS *, int, char **);
-  ~ComputeTorqueChunk();
-  void init();
-  void compute_array();
+  ~ComputeTorqueChunk() override;
+  void init() override;
+  void compute_array() override;
 
-  void lock_enable();
-  void lock_disable();
-  int lock_length();
-  void lock(class Fix *, bigint, bigint);
-  void unlock(class Fix *);
+  void lock_enable() override;
+  void lock_disable() override;
+  int lock_length() override;
+  void lock(class Fix *, bigint, bigint) override;
+  void unlock(class Fix *) override;
 
-  double memory_usage();
+  double memory_usage() override;
 
  private:
   int nchunk, maxchunk;
diff --git a/src/compute_vacf.h b/src/compute_vacf.h
index bb318a2b1a..7bc93dbaaa 100644
--- a/src/compute_vacf.h
+++ b/src/compute_vacf.h
@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class ComputeVACF : public Compute {
  public:
   ComputeVACF(class LAMMPS *, int, char **);
-  ~ComputeVACF();
-  void init();
-  virtual void compute_vector();
-  void set_arrays(int);
+  ~ComputeVACF() override;
+  void init() override;
+  void compute_vector() override;
+  void set_arrays(int) override;
 
  protected:
   bigint nvacf;
diff --git a/src/compute_vcm_chunk.h b/src/compute_vcm_chunk.h
index 3f25a73585..42ae0de7ef 100644
--- a/src/compute_vcm_chunk.h
+++ b/src/compute_vcm_chunk.h
@@ -27,18 +27,18 @@ namespace LAMMPS_NS {
 class ComputeVCMChunk : public Compute {
  public:
   ComputeVCMChunk(class LAMMPS *, int, char **);
-  ~ComputeVCMChunk();
-  void init();
-  void setup();
-  void compute_array();
+  ~ComputeVCMChunk() override;
+  void init() override;
+  void setup() override;
+  void compute_array() override;
 
-  void lock_enable();
-  void lock_disable();
-  int lock_length();
-  void lock(class Fix *, bigint, bigint);
-  void unlock(class Fix *);
+  void lock_enable() override;
+  void lock_disable() override;
+  int lock_length() override;
+  void lock(class Fix *, bigint, bigint) override;
+  void unlock(class Fix *) override;
 
-  double memory_usage();
+  double memory_usage() override;
 
  private:
   int nchunk, maxchunk;