Date: Sun, 12 Feb 2006 22:39:28 +0100 From: Jean-Yves Lefort <jylefort@FreeBSD.org> To: freebsd-ports@FreeBSD.org Cc: paul+fbsd@it.ca Subject: Re: ports/92946: New port: print/xmlprpr - XML Pretty Printer Message-ID: <20060212223928.688aa5b0.jylefort@FreeBSD.org> In-Reply-To: <20060212213101.GE11732@it.ca> References: <200602110718.k1B7IAtY060011@freefall.freebsd.org> <20060211151306.GG11351@it.ca> <20060211195818.0ebaa31c.jylefort@FreeBSD.org> <20060211201722.GK11351@it.ca> <20060211214724.27c5457f.jylefort@FreeBSD.org> <20060212032944.GL11351@it.ca> <20060212201227.505c3101.jylefort@FreeBSD.org> <20060212203054.GC11732@it.ca> <20060212220241.4ea652aa.jylefort@FreeBSD.org> <20060212213101.GE11732@it.ca>
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On Sun, 12 Feb 2006 16:31:02 -0500
Paul Chvostek <paul+fbsd@it.ca> wrote:
> On Sun, Feb 12, 2006 at 10:02:41PM +0100, Jean-Yves Lefort wrote:
> > >=20
> > > # cd /usr/ports
> > > # grep -lr '\${PERL' . | grep -c '/Makefile$'
> > > 1933
> > > # grep -lr '/usr/bin/perl' . | while read file; do grep -q '\${PERL' =
$file || echo $file; done | grep -c '/Makefile$'
> > > 3
> > >=20
> > > Of these three hits, only one appears to assume that the perl binary
> > > lives in /usr/bin/perl. (That would be sysutils/reoback.)
> >=20
> > # grep '#!/usr/bin/perl' /usr/bin/* /usr/local/bin/* /usr/X11R6/bin/*
> ...
> > Of course, I only have 500 ports installed.
>=20
> Sure, but this only demonstrates that *your* PERL variable points at
> /usr/bin/perl, not what those ports could potentially use. I think
> you'll find that all the Perl scripts you've installed in /usr/local/bin
> and /usr/X11R6/bin have shell magic controlled by the PERL variable, and
> not by a static string. Unless one of them is reoback. :)
No. I'm running FreeBSD 6.0 with the perl5.8 port, and so my ${PERL}
variable points at /usr/local/bin/perl. This demonstrates that
#!/usr/bin/perl is usually left untouched.
> > It'll not break if you hardcode /usr/bin/perl.
>=20
> It will if you're installing on a machine that has /usr/local/bin/perl.
> On an older (4.9) machine I manage at work:
>=20
> # grep -c '/usr/local/bin/perl' /usr/local/bin/* | awk -F: '{a+=3D$2}END{=
print a}'
> 85
> # grep '/usr/local/bin/perl' /usr/local/bin/* | head -10
> Binary file /usr/local/bin/a2p matches
> /usr/local/bin/c2ph:#!/usr/local/bin/perl
> /usr/local/bin/c2ph: eval 'exec /usr/local/bin/perl -S $0 ${1+"$@"}'
> /usr/local/bin/c2ph: #!/usr/local/bin/perl
> /usr/local/bin/cpan:#!/usr/local/bin/perl
> /usr/local/bin/cpan: eval 'exec /usr/local/bin/perl -S $0 ${1+"$@"}'
> /usr/local/bin/crc32:#!/usr/local/bin/perl -w
> /usr/local/bin/crc32:eval 'exec /usr/local/bin/perl -w -S $0 ${1+"$@"}'
> /usr/local/bin/decode-base64:#!/usr/local/bin/perl
> /usr/local/bin/decode-base64:eval 'exec /usr/local/bin/perl -S $0 ${1+"$=
@"}'
>=20
> So who knows -- it may not even be only shell magic that needs ${PERL}.
These scripts should break if you remove your Perl port.
--=20
Jean-Yves Lefort
jylefort@FreeBSD.org
http://lefort.be.eu.org/
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