Attempt at portability.

[perl5.git] / opcode.pl

diff --git a/opcode.pl b/opcode.pl
index bfafce7..61cd0e8 100755 (executable)
--- a/opcode.pl
+++ b/opcode.pl
@@ -31,10 +31,18 @@ while (<DATA>) {
 
 $i = 0;
 print <<"END";
-/* !!!!!!!   DO NOT EDIT THIS FILE   !!!!!!!
-   This file is built by opcode.pl from its data.  Any changes made here
-   will be lost!
-*/
+/*
+ *    opcode.h
+ *
+ *    Copyright (c) 1997-2002, Larry Wall
+ *
+ *    You may distribute under the terms of either the GNU General Public
+ *    License or the Artistic License, as specified in the README file.
+ *
+ * !!!!!!!   DO NOT EDIT THIS FILE   !!!!!!!
+ *  This file is built by opcode.pl from its data.  Any changes made here
+ *  will be lost!
+ */
 
 #define Perl_pp_i_preinc Perl_pp_preinc
 #define Perl_pp_i_predec Perl_pp_predec
@@ -44,10 +52,19 @@ print <<"END";
 END
 
 print ON <<"END";
-/* !!!!!!!   DO NOT EDIT THIS FILE   !!!!!!!
-   This file is built by opcode.pl from its data.  Any changes made here
-   will be lost!
-*/
+/*
+ *    opnames.h
+ *
+ *    Copyright (c) 1997-2002, Larry Wall
+ *
+ *    You may distribute under the terms of either the GNU General Public
+ *    License or the Artistic License, as specified in the README file.
+ *
+ *
+ * !!!!!!!   DO NOT EDIT THIS FILE   !!!!!!!
+ *  This file is built by opcode.pl from its data.  Any changes made here
+ *  will be lost!
+ */
 
 typedef enum opcode {
 END
@@ -264,6 +281,10 @@ close ON or die "Error closing opnames.h: $!";
 chmod 0600, 'opcode.h';  # required by dosish filesystems
 chmod 0600, 'opnames.h'; # required by dosish filesystems
 
+# Some dosish systems can't rename over an existing file:
+unlink         "$_-old"        for qw(opcode.h opnames.h);
+rename $_,     "$_-old"        for qw(opcode.h opnames.h);
+
 rename $opcode_new, 'opcode.h' or die "renaming opcode.h: $!\n";
 rename $opname_new, 'opnames.h' or die "renaming opnames.h: $!\n";
 
@@ -312,6 +333,10 @@ close PPSYM or die "Error closing pp.sym: $!";
 chmod 0600, 'pp_proto.h'; # required by dosish filesystems
 chmod 0600, 'pp.sym';     # required by dosish filesystems
 
+# Some dosish systems can't rename over an existing file:
+unlink         "$_-old"        for qw(pp_proto.h pp.sym);
+rename $_,     "$_-old"        for qw(pp_proto.h pp.sym);
+
 rename $pp_proto_new, 'pp_proto.h' or die "rename pp_proto.h: $!\n";
 rename $pp_sym_new, 'pp.sym' or die "rename pp.sym: $!\n";