diff --git a/src/extrules.am b/src/extrules.am
index 86dba0a6a..f361278ce 100644
--- a/src/extrules.am
+++ b/src/extrules.am
@@ -3,17 +3,17 @@
 
 grib_errors.c : grib_errors.txt errors.pl
 	./errors.pl
-	cmp grib_errors.c grib_errors.c.new || (p4 edit grib_errors.c ; cp grib_errors.c.new grib_errors.c)
-	cmp grib_api.h grib_api.h.new       || (p4 edit grib_api.h ; cp grib_api.h.new grib_api.h)
-	cmp ../fortran/grib_api_constants.h grib_api_constants.h.new || (p4 edit ../fortran/grib_api_constants.h ; cp grib_api_constants.h.new ../fortran/grib_api_constants.h)
-	cmp ../python/grib_errors.h grib_errors.h.new || (p4 edit ../python/grib_errors.h ; cp grib_errors.h.new ../python/grib_errors.h)
+	cmp grib_errors.c grib_errors.c.new || (cp grib_errors.c.new grib_errors.c)
+	cmp grib_api.h grib_api.h.new       || (cp grib_api.h.new grib_api.h)
+	cmp ../fortran/grib_api_constants.h grib_api_constants.h.new || (cp grib_api_constants.h.new ../fortran/grib_api_constants.h)
+	cmp ../python/grib_errors.h grib_errors.h.new || (cp grib_errors.h.new ../python/grib_errors.h)
 
 
-proto:;-p4 edit grib_api_prototypes.h;mkptypes -A $(libgrib_api_a_prototypes) $(libgrib_api_extra_prototypes) > grib_api_prototypes.h
+proto:;-chmod +w grib_api_prototypes.h;mkptypes -A $(libgrib_api_a_prototypes) $(libgrib_api_extra_prototypes) > grib_api_prototypes.h
 test:all;(cd ../tests; make tests)
 
 templates:
-	-p4 edit grib_templates.h
+	-chmod +wgrib_templates.h
 	./grib2c.pl ../templates/*.grib
 
 grib_lex.c : gribl.l grib_yacc.h
diff --git a/src/grib2c.pl b/src/grib2c.pl
index 29fd2d1c8..c00ae47da 100755
--- a/src/grib2c.pl
+++ b/src/grib2c.pl
@@ -13,7 +13,6 @@ use Data::Dumper;
 my $name;
 my %entries;
 
-system("p4 edit grib_templates.h");
 open(OUT,">grib_templates.h") or "die grib_templates.h: $!";
 print OUT "/* This file is automatically generated by $0, do not edit */\n\n";
 
diff --git a/src/make_accessor_class_hash.ksh b/src/make_accessor_class_hash.ksh
index 32c217777..da9edd215 100755
--- a/src/make_accessor_class_hash.ksh
+++ b/src/make_accessor_class_hash.ksh
@@ -12,7 +12,7 @@ EOF
 
 cat grib_accessor_factory_hash_list | sed 's/\/\*/#/g' >> accessor_class_list.gperf
 
-p4 edit grib_accessor_classes_hash.c
+# editing grib_accessor_classes_hash.c
 
 gperf -W classes -t -G -H grib_accessor_classes_get_id -N grib_accessor_classes_hash -m 1 -j 1 accessor_class_list.gperf | sed s/__inline//g | sed s/inline//g > grib_accessor_classes_hash.c
 
diff --git a/src/make_class.pl b/src/make_class.pl
index 820563287..99c871eab 100755
--- a/src/make_class.pl
+++ b/src/make_class.pl
@@ -72,7 +72,7 @@ foreach $name ( @ARGV )
         if(compare_text("$name.tmp",$name))
         {
             print "UPDATING file $name\n";
-            system("p4 edit $name") unless(-w $name);
+            system("chmod +w $name") unless(-w $name);
             cp($name,"$name.old") or die "cp($name,$name.old): $!";
             cp("$name.tmp",$name) or die "cp($name.tmp,$name): $!";
         }
@@ -211,7 +211,7 @@ EOF
             if(-f $file)
             {
                 local $_;
-                system("p4 edit $file") unless(-w $file);
+                system("chmmod +w $file") unless(-w $file);
                 open(F,"<$file") or die "$file: $!";
 
                 while(<F>)
diff --git a/src/make_hash_keys.ksh b/src/make_hash_keys.ksh
index f9503c43e..0ba46d1aa 100755
--- a/src/make_hash_keys.ksh
+++ b/src/make_hash_keys.ksh
@@ -7,7 +7,7 @@ cd ../tests
 
 cd ../src
 
-p4 edit keys grib_hash_keys.c
+# Editing keys grib_hash_keys.c
 
 gperf -I -t -G -H hash_keys -N grib_keys_hash_get -m 3  ../tests/keys | sed s/__inline//g | sed s/inline//g  > grib_hash_keys.c