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ExtUtils::MM_VMS(3)	       User Contributed Perl Documentation	      ExtUtils::MM_VMS(3)

NAME
       ExtUtils::MM_VMS - methods to override UN*X behaviour in ExtUtils::MakeMaker

SYNOPSIS
	 Do not use this directly.
	 Instead, use ExtUtils::MM and it will figure out which MM_*
	 class to use for you.

DESCRIPTION
       See ExtUtils::MM_Unix for a documentation of the methods provided there. This package
       overrides the implementation of these methods, not the semantics.

   Methods always loaded
       wraplist
	   Converts a list into a string wrapped at approximately 80 columns.

   Methods
       Those methods which override default MM_Unix methods are marked "(override)", while
       methods unique to MM_VMS are marked "(specific)".  For overridden methods, documentation
       is limited to an explanation of why this method overrides the MM_Unix method; see the
       ExtUtils::MM_Unix documentation for more details.

       guess_name (override)
	   Try to determine name of extension being built.  We begin with the name of the current
	   directory.  Since VMS filenames are case-insensitive, however, we look for a .pm file
	   whose name matches that of the current directory (presumably the 'main' .pm file for
	   this extension), and try to find a "package" statement from which to obtain the
	   Mixed::Case package name.

       find_perl (override)
	   Use VMS file specification syntax and CLI commands to find and invoke Perl images.

       _fixin_replace_shebang (override)
	   Helper routine for MM->fixin(), overridden because there's no such thing as an actual
	   shebang line that will be interpreted by the shell, so we just prepend
	   $Config{startperl} and preserve the shebang line argument for any switches it may
	   contain.

       maybe_command (override)
	   Follows VMS naming conventions for executable files.  If the name passed in doesn't
	   exactly match an executable file, appends .Exe (or equivalent) to check for executable
	   image, and .Com to check for DCL procedure.	If this fails, checks directories in
	   DCL$PATH and finally Sys$System: for an executable file having the name specified,
	   with or without the .Exe-equivalent suffix.

       pasthru (override)
	   VMS has $(MMSQUALIFIERS) which is a listing of all the original command line options.
	   This is used in every invocation of make in the VMS Makefile so PASTHRU should not be
	   necessary.  Using PASTHRU tends to blow commands past the 256 character limit.

       pm_to_blib (override)
	   VMS wants a dot in every file so we can't have one called 'pm_to_blib', it becomes
	   'pm_to_blib.' and MMS/K isn't smart enough to know that when you have a target called
	   'pm_to_blib' it should look for 'pm_to_blib.'.

	   So in VMS its pm_to_blib.ts.

       perl_script (override)
	   If name passed in doesn't specify a readable file, appends .com or .pl and tries
	   again, since it's customary to have file types on all files under VMS.

       replace_manpage_separator
	   Use as separator a character which is legal in a VMS-syntax file name.

       init_DEST
	   (override) Because of the difficulty concatenating VMS filepaths we must pre-expand
	   the DEST* variables.

       init_DIRFILESEP
	   No separator between a directory path and a filename on VMS.

       init_main (override)
       init_tools (override)
	   Provide VMS-specific forms of various utility commands.

	   Sets DEV_NULL to nothing because I don't know how to do it on VMS.

	   Changes EQUALIZE_TIMESTAMP to set revision date of target file to one second later
	   than source file, since MMK interprets precisely equal revision dates for a source and
	   target file as a sign that the target needs to be updated.

       init_platform (override)
	   Add PERL_VMS, MM_VMS_REVISION and MM_VMS_VERSION.

	   MM_VMS_REVISION is for backwards compatibility before MM_VMS had a $VERSION.

       platform_constants
       init_VERSION (override)
	   Override the *DEFINE_VERSION macros with VMS semantics.  Translate the MAKEMAKER
	   filepath to VMS style.

       constants (override)
	   Fixes up numerous file and directory macros to insure VMS syntax regardless of input
	   syntax.  Also makes lists of files comma-separated.

       special_targets
	   Clear the default .SUFFIXES and put in our own list.

       cflags (override)
	   Bypass shell script and produce qualifiers for CC directly (but warn user if a shell
	   script for this extension exists).  Fold multiple /Defines into one, since some C
	   compilers pay attention to only one instance of this qualifier on the command line.

       const_cccmd (override)
	   Adds directives to point C preprocessor to the right place when handling #include
	   <sys/foo.h> directives.  Also constructs CC command line a bit differently than
	   MM_Unix method.

       tools_other (override)
	   Throw in some dubious extra macros for Makefile args.

	   Also keep around the old $(SAY) macro in case somebody's using it.

       init_dist (override)
	   VMSish defaults for some values.

	     macro	   description			   default

	     ZIPFLAGS	   flags to pass to ZIP 	   -Vu

	     COMPRESS	   compression command to	   gzip
			   use for tarfiles
	     SUFFIX	   suffix to put on		   -gz
			   compressed files

	     SHAR	   shar command to use		   vms_share

	     DIST_DEFAULT  default target to use to	   tardist
			   create a distribution

	     DISTVNAME	   Use VERSION_SYM instead of	   $(DISTNAME)-$(VERSION_SYM)
			   VERSION for the name

       c_o (override)
	   Use VMS syntax on command line.  In particular, $(DEFINE) and $(PERL_INC) have been
	   pulled into $(CCCMD).  Also use MM[SK] macros.

       xs_c (override)
	   Use MM[SK] macros.

       xs_o (override)
	   Use MM[SK] macros, and VMS command line for C compiler.

       dlsyms (override)
	   Create VMS linker options files specifying universal symbols for this extension's
	   shareable image, and listing other shareable images or libraries to which it should be
	   linked.

       dynamic_lib (override)
	   Use VMS Link command.

       static_lib (override)
	   Use VMS commands to manipulate object library.

       extra_clean_files
	   Clean up some OS specific files.  Plus the temp file used to shorten a lot of
	   commands.  And the name mangler database.

       zipfile_target
       tarfile_target
       shdist_target
	   Syntax for invoking shar, tar and zip differs from that for Unix.

       install (override)
	   Work around DCL's 255 character limit several times,and use VMS-style command line
	   quoting in a few cases.

       perldepend (override)
	   Use VMS-style syntax for files; it's cheaper to just do it directly here than to have
	   the MM_Unix method call "catfile" repeatedly.  Also, if we have to rebuild Config.pm,
	   use MM[SK] to do it.

       makeaperl (override)
	   Undertake to build a new set of Perl images using VMS commands.  Since VMS does
	   dynamic loading, it's not necessary to statically link each extension into the Perl
	   image, so this isn't the normal build path.	Consequently, it hasn't really been
	   tested, and may well be incomplete.

       maketext_filter (override)
	   Insure that colons marking targets are preceded by space, in order to distinguish the
	   target delimiter from a colon appearing as part of a filespec.

       prefixify (override)
	   prefixifying on VMS is simple.  Each should simply be:

	       perl_root:[some.dir]

	   which can just be converted to:

	       volume:[your.prefix.some.dir]

	   otherwise you get the default layout.

	   In effect, your search prefix is ignored and $Config{vms_prefix} is used instead.

       cd
       oneliner
       echo
	   perl trips up on "<foo>" thinking it's an input redirect.  So we use the native Write
	   command instead.  Besides, its faster.

       quote_literal
       escape_dollarsigns
	   Quote, don't escape.

       escape_all_dollarsigns
	   Quote, don't escape.

       escape_newlines
       max_exec_len
	   256 characters.

       init_linker
       catdir (override)
       catfile (override)
	   Eliminate the macros in the output to the MMS/MMK file.

	   (File::Spec::VMS used to do this for us, but it's being removed)

       eliminate_macros
	   Expands MM[KS]/Make macros in a text string, using the contents of identically named
	   elements of %$self, and returns the result as a file specification in Unix syntax.

	   NOTE:  This is the canonical version of the method.	The version in File::Spec::VMS is
	   deprecated.

       fixpath
	      my $path = $mm->fixpath($path);
	      my $path = $mm->fixpath($path, $is_dir);

	   Catchall routine to clean up problem MM[SK]/Make macros.  Expands macros in any
	   directory specification, in order to avoid juxtaposing two VMS-syntax directories when
	   MM[SK] is run.  Also expands expressions which are all macro, so that we can tell how
	   long the expansion is, and avoid overrunning DCL's command buffer when MM[KS] is
	   running.

	   fixpath() checks to see whether the result matches the name of a directory in the
	   current default directory and returns a directory or file specification accordingly.
	   $is_dir can be set to true to force fixpath() to consider the path to be a directory
	   or false to force it to be a file.

	   NOTE:  This is the canonical version of the method.	The version in File::Spec::VMS is
	   deprecated.

       os_flavor
	   VMS is VMS.

AUTHOR
       Original author Charles Bailey bailey@newman.upenn.edu

       Maintained by Michael G Schwern schwern@pobox.com

       See ExtUtils::MakeMaker for patching and contact information.

perl v5.16.3				    2013-06-14			      ExtUtils::MM_VMS(3)
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