Bug #84245 for IPC-Cmd: Q re IPC::CMD and executable suffix

Wed Mar 27 14:52:14 2013 Paul.Green [...] stratus.com - Ticket created

CC:	"Green, Paul" <Paul.Green [...] stratus.com>
Subject:	Q re IPC::CMD and executable suffix
Date:	Wed, 27 Mar 2013 14:52:00 -0400
To:	<bug-ipc-cmd [...] rt.cpan.org>
From:	"Green, Paul" <Paul.Green [...] stratus.com>

Gentle IPC::Cmd maintainer, I maintain the port of Perl for the Stratus VOS/OpenVOS operating system. This operating system requires that the name of any executable file end with the suffix ".pm". (Not to be confused with the suffix for perl modules). To be guaranteed to finding a VOS executable program **in the file system**, the .pm suffix must be specified. The suffix is NOT required when simply typing in commands (although it can be supplied here, if one wishes to do so). In my experience, most perl code is written and tested in a Unix/Linux environment and hence does not concern itself with executable suffixes. Because the Windows environment has a similar requirement, some code has been modified to deal with suffixes, but this is not universal. I'm wondering whether or how IPC::Cmd should be modified to deal with this issue for VOS. It is easy enough to special-case VOS; the $^O variable will return 'vos' on our system. Have you run into this issue before? How do you suggest I proceed? Thanks PG -- Sr. Technical Consultant, Stratus Technologies Inc. Office: +1-978-461-7557; Mobile: +1-978-235-2451; Twitter: @stratuspaulg

Wed Mar 27 18:19:02 2013 chris [...] bingosnet.co.uk - Correspondence added

Subject:	Re: [rt.cpan.org #84245] Q re IPC::CMD and executable suffix
Date:	Wed, 27 Mar 2013 22:18:43 +0000
To:	Paul Green via RT <bug-IPC-Cmd [...] rt.cpan.org>
From:	"Chris 'BinGOs' Williams" <chris [...] bingosnet.co.uk>

On Wed, Mar 27, 2013 at 02:52:14PM -0400, Paul Green via RT wrote: Show quoted text

> Wed Mar 27 14:52:14 2013: Request 84245 was acted upon. > Transaction: Ticket created by Paul.Green@stratus.com > Queue: IPC-Cmd > Subject: Q re IPC::CMD and executable suffix > Broken in: (no value) > Severity: (no value) > Owner: Nobody > Requestors: Paul.Green@stratus.com > Status: new > Ticket <URL: https://rt.cpan.org/Ticket/Display.html?id=84245 > > > > Gentle IPC::Cmd maintainer, > > > > I maintain the port of Perl for the Stratus VOS/OpenVOS operating > system. This operating system requires that the name of any executable > file end with the suffix ".pm". (Not to be confused with the suffix for > perl modules). > > > > To be guaranteed to finding a VOS executable program **in the file > system**, the .pm suffix must be specified. The suffix is NOT required > when simply typing in commands (although it can be supplied here, if one > wishes to do so). > > > > In my experience, most perl code is written and tested in a Unix/Linux > environment and hence does not concern itself with executable suffixes. > Because the Windows environment has a similar requirement, some code has > been modified to deal with suffixes, but this is not universal. > > > > I'm wondering whether or how IPC::Cmd should be modified to deal with > this issue for VOS. It is easy enough to special-case VOS; the $^O > variable will return 'vos' on our system. Have you run into this issue > before? How do you suggest I proceed?

The can_run() function of IPC::Cmd is used to locate executables. This uses MM->maybe_command from ExtUtils::MakeMaker. ExtUtils::MM_VOS inherits from ExtUtils::MM_Unix and will probably need to override maybe_command to check for the .pm suffix (similar to how ExtUtils::MM_Win32 does for .exe et al). -- Chris Williams aka BinGOs PGP ID 0x4658671F http://www.gumbynet.org.uk ==========================

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Wed Mar 27 18:19:03 2013 The RT System itself - Status changed from 'new' to 'open'

Thu Mar 28 14:38:27 2013 Paul.Green [...] stratus.com - Correspondence added

Subject:	RE: [rt.cpan.org #84245] Q re IPC::CMD and executable suffix
Date:	Thu, 28 Mar 2013 14:38:10 -0400
To:	<bug-IPC-Cmd [...] rt.cpan.org>
From:	"Green, Paul" <Paul.Green [...] stratus.com>

Thanks, Chris. I'll look into these programs. PG Show quoted text

-----Original Message----- From: chris@bingosnet.co.uk via RT [mailto:bug-IPC-Cmd@rt.cpan.org] Sent: Wednesday, March 27, 2013 6:19 PM To: Green, Paul Subject: Re: [rt.cpan.org #84245] Q re IPC::CMD and executable suffix <URL: https://rt.cpan.org/Ticket/Display.html?id=84245 > On Wed, Mar 27, 2013 at 02:52:14PM -0400, Paul Green via RT wrote:

> Wed Mar 27 14:52:14 2013: Request 84245 was acted upon. > Transaction: Ticket created by Paul.Green@stratus.com > Queue: IPC-Cmd > Subject: Q re IPC::CMD and executable suffix > Broken in: (no value) > Severity: (no value) > Owner: Nobody > Requestors: Paul.Green@stratus.com > Status: new > Ticket <URL: https://rt.cpan.org/Ticket/Display.html?id=84245 > > > > Gentle IPC::Cmd maintainer, > > > > I maintain the port of Perl for the Stratus VOS/OpenVOS operating > system. This operating system requires that the name of any executable > file end with the suffix ".pm". (Not to be confused with the suffix > for perl modules). > > > > To be guaranteed to finding a VOS executable program **in the file > system**, the .pm suffix must be specified. The suffix is NOT > required when simply typing in commands (although it can be supplied > here, if one wishes to do so). > > > > In my experience, most perl code is written and tested in a Unix/Linux > environment and hence does not concern itself with executable suffixes. > Because the Windows environment has a similar requirement, some code > has been modified to deal with suffixes, but this is not universal. > > > > I'm wondering whether or how IPC::Cmd should be modified to deal with > this issue for VOS. It is easy enough to special-case VOS; the $^O > variable will return 'vos' on our system. Have you run into this issue > before? How do you suggest I proceed?

The can_run() function of IPC::Cmd is used to locate executables. This uses MM->maybe_command from ExtUtils::MakeMaker. ExtUtils::MM_VOS inherits from ExtUtils::MM_Unix and will probably need to override maybe_command to check for the .pm suffix (similar to how ExtUtils::MM_Win32 does for .exe et al). -- Chris Williams aka BinGOs PGP ID 0x4658671F http://www.gumbynet.org.uk ==========================