Why doesn't Perl 6 have -V ?

[Cody Fendant]

One of the first things I did when I installed Rakudo was

perl6 -v

which wasn't that exciting, but so what? So then I did:

perl6 -V

Which just gives an error message because there's no file called "-V". So ... will it have a -V one day? Or is there another way to do that?

[moritz]

Try $ perl6 --version

docs/running.pod for a list of available options.

We know that Rakudo's command line parsing isn't great yet, particle worked on it for a while, but got distracted by real-life things :(

[Cody Fendant]

--version gives even less detail than "-v"!

[cdarke]

And just to confuse you further:

parrot -V

(uppercase) gives the version, but:

parrot -v

(lowercase) turns on verbose mode. Before you try, -Vv does not appear to do anything special.

[xiaoyafeng]

Of course perl6 should support -v and -V. But please consider below 2 reasons:

• Rakudo star now just implement subset of perl6 spec
• S19 is involving evolving, might be changed radically in future.

So I think -V should have low priority compared to other more important feature.

Besides, although rakudo star is not perfect yet, it still deserve us applaud.

[chromatic]

What do you expect perl6 -V to do?

[Cody Fendant]

The same thing it would do in Perl 5, of course!

Small v:

This is perl, v5.10.0 built for MSWin32-x86-multi-thread
(with 5 registered patches, see perl -V for more detail)

Copyright 1987-2007, Larry Wall

Binary build 1004 [287188] provided by ActiveState http://www.ActiveSt
+ate.com
Built Sep  3 2008 13:16:37

Perl may be copied only under the terms of either the Artistic License
+ or the
GNU General Public License, which may be found in the Perl 5 source ki
+t.

Complete documentation for Perl, including FAQ lists, should be found 
+on
this system using "man perl" or "perldoc perl".  If you have access to
+ the
Internet, point your browser at http://www.perl.org/, the Perl Home Pa
+ge.

Big v:

Summary of my perl5 (revision 5 version 10 subversion 0) configuration
+:
  Platform:
    osname=MSWin32, osvers=5.00, archname=MSWin32-x86-multi-thread
    uname=''
    config_args='undef'
    hint=recommended, useposix=true, d_sigaction=undef
    useithreads=define, usemultiplicity=define
    useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=und
+ef
    use64bitint=undef, use64bitall=undef, uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='gcc', ccflags ='-DNDEBUG -DWIN32 -D_CONSOLE -DNO_STRICT -DHAVE
+_DES_FCRYPT -DUSE_SITECUSTOMIZE -DPRIVLIB_LAST_IN_INC -DPERL_IMPLICIT
+_CONTEXT -DPERL_IMPLICIT_SYS -DUSE_PERLIO -DPERL_MSVCRT_READFIX -DHAS
+ATTRIBUTE -fno-strict-aliasing -mms-bitfields',
    optimize='-O2',
    cppflags='-DWIN32'
    ccversion='', gccversion='undef', gccosandvers=''
    intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
    d_longlong=undef, longlongsize=8, d_longdbl=define, longdblsize=10
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='__int64
+', lseeksize=8
    alignbytes=8, prototype=define
  Linker and Libraries:
    ld='g++', ldflags ='-L"C:\Perl\lib\CORE"'
    libpth=\lib
    libs=-lkernel32 -luser32 -lgdi32 -lwinspool -lcomdlg32 -ladvapi32 
+-lshell32 -lole32 -loleaut32 -lnetapi32 -luuid -lws2_32 -lmpr -lwinmm
+ -lversion -lodbc32 -lodbccp32 -lmsvcrt
    perllibs=-lkernel32 -luser32 -lgdi32 -lwinspool -lcomdlg32 -ladvap
+i32 -lshell32 -lole32 -loleaut32 -lnetapi32 -luuid -lws2_32 -lmpr -lw
+inmm -lversion -lodbc32 -lodbccp32 -lmsvcrt
    libc=msvcrt.lib, so=dll, useshrplib=true, libperl=perl510.lib
    gnulibc_version=''
  Dynamic Linking:
    dlsrc=dl_win32.xs, dlext=dll, d_dlsymun=undef, ccdlflags=' '
    cccdlflags=' ', lddlflags='-mdll -L"C:\Perl\lib\CORE"'


Characteristics of this binary (from libperl): 
  Compile-time options: MULTIPLICITY PERL_DONT_CREATE_GVSV
                        PERL_IMPLICIT_CONTEXT PERL_IMPLICIT_SYS
                        PERL_MALLOC_WRAP PL_OP_SLAB_ALLOC USE_ITHREADS
                        USE_LARGE_FILES USE_PERLIO USE_SITECUSTOMIZE
  Locally applied patches:
    ActivePerl Build 1004 [287188]
    33741 avoids segfaults invoking S_raise_signal() (on Linux)
    33763 Win32 process ids can have more than 16 bits
    32809 Load 'loadable object' with non-default file extension
    32728 64-bit fix for Time::Local
  Built under MSWin32
  Compiled at Sep  3 2008 13:16:37
  @INC:
    C:/Perl/site/lib
    C:/Perl/lib
    .

[JavaFan]

The same thing it would do in Perl 5, of course!

But if it would do everything the same as it does in Perl 5, there wouldn't be any need for Perl 6! ;-)

[ikegami]

The information required to replicate the environment in which a bug occurred.

• Version
• Platform details
• Build options
• @INC
• List of environment variables that affect Perl (/PERL.*/)