diff --git a/src/Makefile b/src/Makefile
index 036da146b7..b88ebf550c 100755
--- a/src/Makefile
+++ b/src/Makefile
@@ -37,6 +37,7 @@ help:
 	@echo ''
 	@echo 'make clean-all           delete all object files'
 	@echo 'make clean-machine       delete object files for one machine'
+	@echo 'make purge               purge obsolete copies of package sources'
 	@echo 'make tar                 create lmp_src.tar.gz of src dir and packages'
 	@echo 'make makelib             create Makefile.lib for static library build'
 	@echo 'make makeshlib           create Makefile.shlib for shared library build'
@@ -99,6 +100,12 @@ clean-all:
 clean-%:
 	rm -rf Obj_$(@:clean-%=%)
 
+purge: purge-list.txt
+	@echo 'Purging obsoleted and generated source files'
+	@for f in `grep -v '#' purge-list.txt` ;		\
+	    do test -f $$f && rm $$f && echo $$f || : ;		\
+	done
+
 # Create a tarball of src dir and packages
 
 tar:
diff --git a/src/purge-list.txt b/src/purge-list.txt
new file mode 100644
index 0000000000..184df52ae0
--- /dev/null
+++ b/src/purge-list.txt
@@ -0,0 +1,352 @@
+# deleted on Fri Oct 19 15:27:15 2012 +0000
+pair_lj_charmm_coul_long_proxy_omp.cpp
+pair_lj_charmm_coul_long_proxy_omp.h
+pair_lj_class2_coul_long_proxy_omp.cpp
+pair_lj_class2_coul_long_proxy_omp.h
+pair_lj_cut_coul_long_proxy_omp.cpp
+pair_lj_cut_coul_long_proxy_omp.h
+pair_lj_cut_tip4p_long_proxy_omp.cpp
+pair_lj_cut_tip4p_long_proxy_omp.h
+pppm_proxy.cpp
+pppm_proxy.h
+pppm_tip4p_proxy.cpp
+pppm_tip4p_proxy.h
+# deleted on Wed Oct 3 15:17:27 2012 +0000
+pair_lj_cut_coul_long_proxy_tip4p_omp.cpp
+pair_lj_cut_coul_long_proxy_tip4p_omp.h
+# deleted on Wed Oct 3 15:06:24 2012 +0000
+pair_lj_cut_coul_long_tip4p_opt.cpp
+pair_lj_cut_coul_long_tip4p_opt.h
+# deleted on Wed Oct 3 14:53:43 2012 +0000
+pair_lj_charmm_coul_long_proxy_omp.cpp
+pair_lj_charmm_coul_long_proxy_omp.h
+pair_lj_class2_coul_long_proxy_omp.cpp
+pair_lj_class2_coul_long_proxy_omp.h
+pair_lj_cut_coul_long_proxy_omp.cpp
+pair_lj_cut_coul_long_proxy_omp.h
+pair_lj_cut_coul_long_tip4p_omp.cpp
+pair_lj_cut_coul_long_tip4p_omp.h
+# deleted on Wed Oct 3 14:50:44 2012 +0000
+pair_buck_disp_coul_long_omp.cpp
+pair_buck_disp_coul_long_omp.h
+pair_lj_disp_coul_long_omp.cpp
+pair_lj_disp_coul_long_omp.h
+# deleted on Wed Oct 3 14:46:42 2012 +0000
+pair_lj_cut_coul_long_tip4p.cpp
+pair_lj_cut_coul_long_tip4p.h
+# deleted on Wed Oct 3 14:46:23 2012 +0000
+pair_buck_disp_coul_long.cpp
+pair_buck_disp_coul_long.h
+pair_lj_disp_coul_long.cpp
+pair_lj_disp_coul_long.h
+pair_lj_disp_coul_long_tip4p.cpp
+pair_lj_disp_coul_long_tip4p.h
+# deleted on Tue Oct 2 22:50:58 2012 +0000
+pair_buck_coul_omp.cpp
+pair_buck_coul_omp.h
+pair_lj_coul_omp.cpp
+pair_lj_coul_omp.h
+# deleted on Tue Oct 2 20:12:27 2012 +0000
+pair_lj_charmm_coul_pppm_omp.cpp
+pair_lj_charmm_coul_pppm_omp.h
+pair_lj_class2_coul_pppm_omp.cpp
+pair_lj_class2_coul_pppm_omp.h
+pair_lj_cut_coul_pppm_omp.cpp
+pair_lj_cut_coul_pppm_omp.h
+pair_lj_cut_coul_pppm_tip4p_omp.cpp
+pair_lj_cut_coul_pppm_tip4p_omp.h
+# deleted on Tue Oct 2 19:59:40 2012 +0000
+pair_buck_coul_omp.cpp
+pair_buck_coul_omp.h
+pair_lj_coul_omp.cpp
+pair_lj_coul_omp.h
+pair_lj_cut_coul_long_tip4p_omp.cpp
+pair_lj_cut_coul_long_tip4p_omp.h
+pppm_proxy.cpp
+pppm_proxy.h
+pppm_tip4p_proxy.cpp
+pppm_tip4p_proxy.h
+# deleted on Tue Oct 2 19:58:21 2012 +0000
+pair_lj_cut_coul_pppm_omp.cpp
+pair_lj_cut_coul_pppm_omp.h
+pair_lj_cut_coul_pppm_tip4p_omp.cpp
+pair_lj_cut_coul_pppm_tip4p_omp.h
+# deleted on Tue Oct 2 19:58:03 2012 +0000
+pair_lj_charmm_coul_pppm_omp.cpp
+pair_lj_charmm_coul_pppm_omp.h
+pair_lj_class2_coul_pppm_omp.cpp
+pair_lj_class2_coul_pppm_omp.h
+# deleted on Tue Oct 2 16:36:24 2012 +0000
+ewald_n.cpp
+ewald_n.h
+pair_buck_coul.cpp
+pair_buck_coul.h
+pair_lj_coul.cpp
+pair_lj_coul.h
+# deleted on Wed Jul 25 15:17:24 2012 +0000
+pair_lj_sdk_coul_cut_cuda.cpp
+pair_lj_sdk_coul_cut_cuda.h
+pair_lj_sdk_coul_debye_cuda.cpp
+pair_lj_sdk_coul_debye_cuda.h
+# deleted on Tue Jul 24 14:55:49 2012 +0000
+pair_cg_cmm_coul_cut_cuda.cpp
+pair_cg_cmm_coul_cut_cuda.h
+pair_cg_cmm_coul_debye_cuda.cpp
+pair_cg_cmm_coul_debye_cuda.h
+pair_cg_cmm_coul_long_cuda.cpp
+pair_cg_cmm_coul_long_cuda.h
+pair_cg_cmm_cuda.cpp
+pair_cg_cmm_cuda.h
+# deleted on Sat Jun 9 18:07:14 2012 -0400
+molfile_tester.cpp
+# deleted on Mon Mar 5 15:42:57 2012 +0000
+dirent.h
+erf.h
+fftw.h
+inttypes.h
+sleep.cpp
+sleep.h
+stdint.h
+time.h
+unistd.h
+style_angle.h
+style_atom.h
+style_bond.h
+style_command.h
+style_compute.h
+style_dihedral.h
+style_dump.h
+style_fix.h
+style_improper.h
+style_integrate.h
+style_kspace.h
+style_minimize.h
+style_pair.h
+style_region.h
+style_angle.h
+style_atom.h
+style_bond.h
+style_command.h
+style_compute.h
+style_dihedral.h
+style_dump.h
+style_fix.h
+style_improper.h
+style_integrate.h
+style_kspace.h
+style_minimize.h
+style_pair.h
+style_region.h
+style_angle.h
+style_atom.h
+style_bond.h
+style_command.h
+style_compute.h
+style_dihedral.h
+style_dump.h
+style_fix.h
+style_improper.h
+style_integrate.h
+style_kspace.h
+style_minimize.h
+style_pair.h
+style_region.h
+# deleted on Fri Jan 6 20:58:15 2012 +0000
+fix_reaxc_species.cpp
+fix_reaxc_species.h
+# deleted on Fri Jan 6 17:53:44 2012 +0000
+mpi.cpp
+# deleted on Sat Dec 31 20:27:05 2011 -0500
+ewald_cg.cpp
+ewald_cg.h
+# deleted on Sat Dec 31 20:01:21 2011 -0500
+dihedral_omp.cpp
+dihedral_omp.h
+pair_cg_cmm_omp.cpp
+pair_cg_cmm_omp.h
+pair_lj_cut_coul_long_tip4p_omp.cpp
+pair_lj_cut_coul_long_tip4p_omp.h
+pair_omp.cpp
+pair_omp.h
+# deleted on Fri Dec 9 15:45:04 2011 -0500
+mpi.cpp
+# deleted on Thu Dec 8 23:13:51 2011 +0000
+pair_cg_cmm_coul_long_gpu.cpp
+pair_cg_cmm_coul_long_gpu.h
+pair_cg_cmm_gpu.cpp
+pair_cg_cmm_gpu.h
+# deleted on Mon Nov 7 19:32:59 2011 -0500
+pair_cg_cmm_coul_long_gpu.cpp
+pair_cg_cmm_coul_long_gpu.h
+pair_cg_cmm_gpu.cpp
+pair_cg_cmm_gpu.h
+# deleted on Tue Oct 25 23:04:03 2011 -0400
+lj_sdk_common.cpp
+# deleted on Thu Oct 20 15:10:28 2011 +0000
+pair_line.cpp
+pair_line.h
+pair_tri.cpp
+pair_tri.h
+# deleted on Thu Oct 20 14:35:39 2011 +0000
+cuda_common.h
+cuda_precision.h
+cuda_shared.h
+# deleted on Fri Oct 7 08:55:40 2011 -0400
+pair_hybrid_overlay_omp.cpp
+pair_hybrid_overlay_omp.h
+# deleted on Fri Oct 7 08:54:38 2011 -0400
+angle_hybrid_omp.cpp
+angle_hybrid_omp.h
+bond_hybrid_omp.cpp
+bond_hybrid_omp.h
+dihedral_hybrid_omp.cpp
+dihedral_hybrid_omp.h
+improper_hybrid_omp.cpp
+improper_hybrid_omp.h
+pair_hybrid_omp.cpp
+pair_hybrid_omp.h
+# deleted on Mon Aug 22 13:48:15 2011 -0400
+omp_thr.cpp
+omp_thr.h
+# deleted on Mon Aug 8 22:56:28 2011 +0000
+dihedral_cosineshiftexp.cpp
+dihedral_cosineshiftexp.h
+# deleted on Mon Aug 8 22:55:20 2011 +0000
+angle_cosineshift.cpp
+angle_cosineshift.h
+angle_cosineshiftexp.cpp
+angle_cosineshiftexp.h
+# deleted on Mon Aug 8 19:25:08 2011 +0000
+pppm_gpu_double.cpp
+pppm_gpu_double.h
+pppm_gpu_single.cpp
+pppm_gpu_single.h
+# deleted on Tue Jun 14 00:04:59 2011 +0000
+erfc.cpp
+erfc.h
+sleep.cpp
+sleep.h
+# deleted on Fri Apr 15 20:57:03 2011 -0400
+pair_lj_charmm_coul_long_gpu2.cpp
+pair_lj_charmm_coul_long_gpu2.h
+# deleted on Wed Apr 13 21:40:14 2011 +0000
+atom_vec_colloid.cpp
+atom_vec_colloid.h
+atom_vec_granular.cpp
+atom_vec_granular.h
+# deleted on Fri Nov 19 12:53:07 2010 -0500
+fix_pour_omp.cpp
+fix_pour_omp.h
+# deleted on Thu Aug 19 23:20:14 2010 +0000
+fix_qeq.cpp
+fix_qeq.h
+# deleted on Thu Jun 17 01:34:38 2010 +0000
+compute_vsum.cpp
+compute_vsum.h
+# deleted on Mon Jun 14 11:06:46 2010 -0400
+pair_buck_coul_omp.cpp
+pair_buck_coul_omp.h
+pair_lj_coul_omp.cpp
+pair_lj_coul_omp.h
+# deleted on Thu Jun 10 15:39:08 2010 -0400
+pair_buck_coul_omp.cpp
+pair_buck_coul_omp.h
+# deleted on Tue Jun 8 15:42:51 2010 -0400
+pair_buck_coul_omp.cpp
+pair_buck_coul_omp.h
+# deleted on Sat May 22 17:00:55 2010 -0400
+mpi.cpp
+# deleted on Tue Jan 12 01:37:48 2010 +0000
+style_asphere.h
+style_class2.h
+style_colloid.h
+style_dipole.h
+style_dsmc.h
+style_gpu.h
+style_granular.h
+style_kspace.h
+style_manybody.h
+style_meam.h
+style_molecule.h
+style_opt.h
+style_peri.h
+style_poems.h
+style_prd.h
+style_reax.h
+style_user_ackland.h
+style_user_atc.h
+style_user_cd_eam.h
+style_user_cg_cmm.h
+style_user_ewaldn.h
+style_user_imd.h
+style_user_smd.h
+style_xtc.h
+# deleted on Thu Dec 17 23:52:31 2009 +0000
+dump_bond.cpp
+dump_bond.h
+# deleted on Mon Nov 9 18:20:20 2009 +0000
+atom_vec_dpd.cpp
+atom_vec_dpd.h
+style_dpd.h
+# deleted on Mon Aug 10 20:28:57 2009 +0000
+style_gpu.h
+# deleted on Mon Jun 22 21:11:31 2009 +0000
+fix_write_reax_bonds.cpp
+fix_write_reax_bonds.h
+# deleted on Wed Feb 11 22:26:01 2009 +0000
+reax_cbkabo.h
+reax_cbkbo.h
+reax_cbkc.h
+reax_cbkch.h
+reax_cbkd.h
+reax_cbkia.h
+reax_cbklonpar.h
+reax_cbknubon2.h
+reax_cbkpairs.h
+reax_cbkqa.h
+reax_energies.h
+reax_fortran.h
+reax_functions.h
+reax_params.h
+reax_small.h
+# deleted on Thu Jan 8 16:53:09 2009 +0000
+pair_gran_hertzian.cpp
+pair_gran_hertzian.h
+pair_gran_history.cpp
+pair_gran_history.h
+pair_gran_no_history.cpp
+pair_gran_no_history.h
+# deleted on Mon Mar 17 23:24:44 2008 +0000
+compute_temp_dipole.cpp
+compute_temp_dipole.h
+fix_nve_dipole.cpp
+fix_nve_dipole.h
+# deleted on Mon Mar 17 23:23:24 2008 +0000
+fix_nve_gran.cpp
+fix_nve_gran.h
+# deleted on Tue Feb 19 16:22:21 2008 +0000
+style_meam.h
+# deleted on Fri Nov 30 21:49:20 2007 +0000
+fix_gran_diag.cpp
+fix_gran_diag.h
+# deleted on Wed Jun 20 15:38:27 2007 +0000
+style_colloid.h
+# deleted on Wed Jun 20 13:26:08 2007 +0000
+style_meam.h
+# deleted on Tue Jan 30 00:54:31 2007 +0000
+atom_angle.cpp
+atom_angle.h
+atom_bond.cpp
+atom_bond.h
+atom_full.cpp
+atom_full.h
+atom_molecular.cpp
+atom_molecular.h
+# deleted on Tue Jan 30 00:22:05 2007 +0000
+atom_dpd.cpp
+atom_dpd.h
+atom_granular.cpp
+atom_granular.h
+# deleted on Wed Dec 13 00:34:21 2006 +0000
+fix_insert.cpp
+fix_insert.h
diff --git a/tools/update-purge-list.pl b/tools/update-purge-list.pl
new file mode 100755
index 0000000000..18398e22f9
--- /dev/null
+++ b/tools/update-purge-list.pl
@@ -0,0 +1,36 @@
+#!/usr/bin/perl -w
+
+use strict;
+my $date="";
+my $newdate="";
+my @list;
+my $scm=0;
+
+open(GITLOG,'git log --summary |');
+open(LIST,'> purge-list.txt');
+
+while (<GITLOG>) {
+  chomp;
+  if (/^Date:\s+(.*)/) {
+    $newdate = $1;
+  }
+
+  if (/\s+delete mode \d+ src\/(\S+)\/(\S+\.(cpp|h)).*/) {
+    # check if file exists in a different sub directory
+    @list = glob("[A-Z-][A-Z-]*/$2");
+    if ($#list < 0) {
+      # check if file got moved to main source directory
+      $scm = system("git ls-files $2 --error-unmatch < /dev/null > /dev/null 2>&1");
+      if ($scm) {
+        if ($date ne $newdate) {
+          $date = $newdate;
+          print LIST "# deleted on $date\n";
+        }
+        print LIST "$2\n";
+      }
+    }
+  }
+}
+
+close GITLOG;
+close LIST;