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Date: | Fri, 24 Jul 2009 20:53:50 +0200 |
Message-ID: | <6910a60907241153ue99dc0cuc9558de6849d4ba8@mail.gmail.com> |
Subject: | Re: cygwin 1.7 and perl Fcntl.pm and Touch.pm |
From: | Reini Urban <rurban AT x-ray DOT at> |
To: | cygwin AT cygwin DOT com, bob AT bobsbits DOT net, nwetters AT cpan DOT org |
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> installed cygwin 1.7 > > bob AT davisrs/c/src654$ cygcheck -c cygwin > Cygwin Package Information > Package =A0 =A0 =A0 =A0 =A0 =A0 =A0Version =A0 =A0 =A0 =A0Status > cygwin =A0 =A0 =A0 =A0 =A0 =A0 =A0 1.7.0-51 =A0 =A0 =A0 OK > > used cpan to install File::Touch > > The install fails from what appears to be an error with this module: > > bob AT davisrs/c/src654$ perl -MFcntl -e ' print $Fcntl::{"O_NONBLOCK"}, "\n= " ' > SCALAR(0x100c22a0) Hmm, this looks like an incorrect usage of the Fcntl exported constants. Perl constants are subs and not scalars. The right usage would be: perl -MFcntl -le ' print O_NONBLOCK' -l is a trick to add \n to every output line. and this is 16384 on 1.5 and 1.7 with all perl's I have. perl -MFcntl -le ' print &O_NONBLOCK' > Whereas on a cygwin 1.5 system this produces: > bob AT davisrs1~$ perl -MFcntl -e ' print $Fcntl::{"O_NONBLOCK"}, "\n"' > *Fcntl::O_NONBLOCK This is perl-5.8 specific and not cygwin-1.5. The idea is this: This is the internal typeglob for the O_NONBLOCK symbol in the Fcntl package namespace. &{ $Fcntl::{'O_NONBLOCK'} } uses the sub of this typeglob, which results in 16384. Using &{ $Fcntl::{'O_NONBLOCK'} } ensures that the definition of O_NONBLOCK= is checked and not the value, e.g. if O_NONBLOCK would be 0. But the perl-5.10 Exporter was improved and therefore $Fcntl::{'O_NONBLOCK'} autovivifies to a scalar, without any coderef. So it fails. > The failing line(s) in touch.pm is: > > eval { > =A0 =A0$SYSOPEN_MODE |=3D &{ $Fcntl::{'O_NONBLOCK'} }; > }; > if($@) { > =A0 =A0if($@ =3D~ /Your vendor has not defined/) { > =A0 =A0 =A0 =A0# probably running on Windows. > =A0 =A0} else { > =A0 =A0 =A0 =A0die "$@"; # Rethrow exception, must be something different > =A0 =A0} The next failure with this module are two wrong MacOS X files in the distro ._Makefile.PL and ._test.pl with binary garbage causing Writing Makefile for File::Touch (/usr/bin/perl Makefile.PL exited with 0) CPAN::Reporter: Makefile.PL result is 'pass', No errors. cp ._test.pl blib/lib/File/._test.pl cp Touch.pm blib/lib/File/Touch.pm Manifying blib/man3/File.Touch.3pm /usr/bin/perl.exe "-Iblib/arch" "-Iblib/lib" ._Makefile.PL ._Makefile Unrecognized character \x05 in column 2 at ._Makefile.PL line 1. make: *** [._Makefile] Error 255 (/usr/bin/make exited with 512) go to ~/.cpan/build/File-Touch-0.06-* rm ._* change the two lines of $SYSOPEN_MODE |=3D &{ $Fcntl::{'O_NONBLOCK'} } to $SYSOPEN_MODE |=3D O_NONBLOCK perl Makefile.PL make make test install clean --=20 Reini Urban http://phpwiki.org/ http://murbreak.at/ -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
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