On 2006-04-23, at 02:49:14 -0700, Yitzchak Scott-Thoennes wrote:
> On Sun, Apr 23, 2006 at 11:34:12AM +0200, Marcus Holland-Moritz wrote:
> > On 2006-04-23, at 02:26:54 -0700, Yitzchak Scott-Thoennes wrote:
> >
> > > On Sun, Apr 23, 2006 at 11:01:17AM +0200, Marcus Holland-Moritz wrote:
> > > > The only thing worth mentioning is that with perl 5.003,
> > > > the following happens:
> > > >
> > > > mhx@r2d2 $ perl5.003 Makefile.PL
> > > > Can't locate ExtUtils/Command.pm in @INC at Makefile.PL line 4.
> > > > BEGIN failed--compilation aborted at Makefile.PL line 4.
> > >
> > > Yes, run-time "require VERSION" is almost always the wrong thing to do.
> > >
> > > > I'd suggest the following change:
> > > >
> > > > --- Makefile.PL.orig 2006-04-23 10:58:31.000000000 +0200
> > > > +++ Makefile.PL 2006-04-23 10:58:50.000000000 +0200
> > > > @@ -1,4 +1,4 @@
> > > > -require 5.004_05;
> > > > +BEGIN { require 5.004_05 }
> > >
> > > "use 5.004_05;" would be better.
> >
> > No, it wouldn't.
> >
> > mhx@r2d2 $ head -n 5 Makefile.PL
> > use 5.004_05;
> >
> > use ExtUtils::MakeMaker;
> > use ExtUtils::Command qw( touch rm_f );
> >
> > mhx@r2d2 $ perl5.003 Makefile.PL
> > syntax error at Makefile.PL line 1, near "use 5.004_05"
> > Execution of Makefile.PL aborted due to compilation errors.
>
> Which version is this?
It's 5.003.
Summary of my perl5 (5.0 patchlevel 3 subversion 0) configuration:
Platform:
osname=linux, osver=2.6.15.1, archname=i686-linux
uname='linux gandalf 2.6.15.1 #2 preempt mon feb 6 22:08:36 met 2006 i686
intel(r) pentium(r) 4 cpu 1.80ghz genuineintel gnulinux '
hint=recommended, useposix=true, d_sigaction=define
Compiler:
cc='cc', optimize='-O2', gccversion=3.3.6 (Gentoo 3.3.6, ssp-3.3.6-1.0,
pie-8.7.8)
cppflags='-Dbool=char -DHAS_BOOL'
ccflags ='-Dbool=char -DHAS_BOOL'
stdchar='char', d_stdstdio=, usevfork=false
voidflags=15, castflags=0, d_casti32=define, d_castneg=define
intsize=4, alignbytes=4, usemymalloc=n, randbits=31
Linker and Libraries:
ld='cc', ldflags =' -L/usr/local/lib'
libpth=/usr/local/lib /lib /usr/lib
libs=-lnsl -lndbm -lgdbm -ldb -ldl -lm -lc -lcrypt
libc=/lib/libc.so.6, so=so
Dynamic Linking:
dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=, ccdlflags='-rdynamic'
cccdlflags='-fpic', lddlflags='-shared -L/usr/local/lib'
@INC: /tmp/perl/install/default/perl5.003/lib/i686-linux/5.003
/tmp/perl/install/default/perl5.003/lib
/tmp/perl/install/default/perl5.003/lib/site_perl/i686-linux
/tmp/perl/install/default/perl5.003/lib/site_perl .
> perlfunc for perl 5.003_07 claims use VERSION works.
perlfunc for 5.003 doesn't mention it:
use Module LIST
use Module
Imports some semantics into the current package from the named
module, generally by aliasing certain subroutine or variable
names into your package. It is exactly equivalent to
BEGIN { require Module; import Module LIST; }
The BEGIN forces the require and import to happen at compile
time. The require makes sure the module is loaded into memory
if it hasn't been yet. The import is not a builtin--it's just
an ordinary static method call into the "Module" package to
tell the module to import the list of features back into the
current package. The module can implement its import method
any way it likes, though most modules just choose to derive
their import method via inheritance from the Exporter class
that is defined in the Exporter module. See Exporter.
If you don't want your namespace altered, explicitly supply an
empty list:
use Module ();
That is exactly equivalent to
BEGIN { require Module; }
Because this is a wide-open interface, pragmas (compiler direc-
tives) are also implemented this way. Currently implemented
pragmas are:
use integer;
use diagnostics;
use sigtrap qw(SEGV BUS);
use strict qw(subs vars refs);
use subs qw(afunc blurfl);
These pseudomodules import semantics into the current block
scope, unlike ordinary modules, which import symbols into the
current package (which are effective through the end of the
file).
There's a corresponding "no" command that unimports meanings
imported by use.
no integer;
no strict 'refs';
See perlmod for a list of standard modules and pragmas.
Marcus
--
If I had only known, I would have been a locksmith.
-- Albert Einstein
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