Override _fixin_replace_shebang on VMS so MM->fixin works.

Script generation doesn't look like it's ever worked on VMS, but
this hasn't been that big a deal because all the utilities
distributed with the core have their own generation facilities
under utils/.  However, Nicholas wants to put that directory on
a diet and have the scripts be generated by the modules that own
them.

So we have to get script generation via MM->fixin working, and we
do that here by prepending the same $Config{startperl} incantation
to the shebang line that we've been using in core for eons.

Tracks upstream commit:

https://github.com/Perl-Toolchain-Gang/ExtUtils-MakeMaker/commit/14ff930dd862286d6dafe4228b3a72415b5df9a5

2 files changed, 31 insertions, 9 deletions

diff --git a/cpan/ExtUtils-MakeMaker/lib/ExtUtils/MM_VMS.pm b/cpan/ExtUtils-MakeMaker/lib/ExtUtils/MM_VMS.pm
index 642f2bab82..d6b63eba63 100644
--- a/cpan/ExtUtils-MakeMaker/lib/ExtUtils/MM_VMS.pm
+++ b/cpan/ExtUtils-MakeMaker/lib/ExtUtils/MM_VMS.pm
@@ -248,6 +248,23 @@ sub find_perl {
     0; # false and not empty
 }
 
+=item _fixin_replace_shebang (override)
+
+Helper routine for MM->fixin(), overridden because there's no such thing as an
+actual shebang line that will be intepreted by the shell, so we just prepend
+$Config{startperl} and preserve the shebang line argument for any switches it
+may contain.
+
+=cut
+
+sub _fixin_replace_shebang {
+    my ( $self, $file, $line ) = @_;
+
+    my ( undef, $arg ) = split ' ', $line, 2;
+
+    return $Config{startperl} . "\n" . $Config{sharpbang} . "perl $arg\n";
+}
+
 =item maybe_command (override)
 
 Follows VMS naming conventions for executable files.
diff --git a/cpan/ExtUtils-MakeMaker/t/fixin.t b/cpan/ExtUtils-MakeMaker/t/fixin.t
index de5866a5c3..ab3a177b38 100644
--- a/cpan/ExtUtils-MakeMaker/t/fixin.t
+++ b/cpan/ExtUtils-MakeMaker/t/fixin.t
@@ -64,6 +64,8 @@ sub test_fixin {
 
 
 # A simple test of fixin
+# On VMS, the shebang line comes after the startperl business.
+my $shb_line_num = $^O eq 'VMS' ? 2 : 0;
 test_fixin(<<END,
 #!/foo/bar/perl -w
 
@@ -71,8 +73,8 @@ blah blah blah
 END
     sub {
         my @lines = @_;
-        unlike $lines[0], qr[/foo/bar/perl], "#! replaced";
-        like   $lines[0], qr[ -w\b], "switch retained";
+        unlike $lines[$shb_line_num], qr[/foo/bar/perl], "#! replaced";
+        like   $lines[$shb_line_num], qr[ -w\b], "switch retained";
         
         # In between might be that "not running under some shell" madness.
                
@@ -90,8 +92,8 @@ END
 
     sub {
         my @lines = @_;
-        unlike $lines[0], qr[/foo/bar/perl5.8.8], "#! replaced";
-        like   $lines[0], qr[ -w\b], "switch retained";
+        unlike $lines[$shb_line_num], qr[/foo/bar/perl5.8.8], "#! replaced";
+        like   $lines[$shb_line_num], qr[ -w\b], "switch retained";
 
         # In between might be that "not running under some shell" madness.
 
@@ -101,17 +103,20 @@ END
 
 
 # fixin shouldn't pick this up.
-test_fixin(<<END,
+SKIP: {
+    skip "Not relevant on VMS", 4 if $^O eq 'VMS';
+    test_fixin(<<END,
 #!/foo/bar/perly -w
 
 blah blah blah
 END
 
-    sub {
-        is join("", @_), <<END;
+        sub {
+            is join("", @_), <<END;
 #!/foo/bar/perly -w
 
 blah blah blah
 END
-    }
-);
+        }
+    );
+}