MirOS Manual: ExtUtils::MM_VMS(3p)


ExtUtils::MM_VMS(Perl Programmers Reference GExtUtils::MM_VMS(3p)

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 direc-
         tory (presumably the 'main' .pm file for this exten-
         sion), 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.

     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 execut-
         able 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)

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         VMS has $(MMSQUALIFIERS) which is a listing of all the
         original command line options.  This is used in every
         invokation 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 cus-
         tomary 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 seperator between a directory path and a filename on
         VMS.

     init_main (override)
     init_others (override)
         Provide VMS-specific forms of various utility commands,
         then hand off to the default MM_Unix method.

         DEV_NULL should probably be overriden with something.

         Also 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)

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         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,

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         $(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 list-
         ing 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.

     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. Conse-
         quently, it hasn't really been tested, and may well be
         incomplete.

     nicetext (override)
         Insure that colons marking targets are preceded by
         space, in order to distinguish the target delimiter from

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         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_newlines
     max_exec_len
         256 characters.

     init_linker
     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 syn-
         tax.

         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

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         returns a directory or file specification accordingly.
         $is_dir can be set to true to force fixpath() to con-
         sider 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 informa-
     tion.

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