Ryfujk

I have a perl script that I want to be usable on systems with no perl interpreter installed (like a linux container, for example). I generate a binary with PAR::Packer and everything appears to work great.

[0] [ishpeck@centbox03 /tmp/examply]$ file ./perlthing/scripts/hello.pl

./perlthing/scripts/hello.pl: Perl script, ASCII text executable

[0] [ishpeck@centbox03 /tmp/examply]$ cat ./perlthing/scripts/hello.pl

#!/usr/bin/perl

use strict;

use warnings;

use File::Basename;



print "Hello, world!n"

[0] [ishpeck@centbox03 /tmp/examply]$ cat Makefile

CURDIR=/tmp/examply

TOPDIR=$(CURDIR)/packaging



rpm: perlbin

    sh -c 'for x in packaging/BUILD packaging/RPMS/x86_64 packaging/RPMS/x86 packaging/RPMS/arm packaging/SOURCES packaging/SPECS packaging/SRPMS; do mkdir -p $$x; done'

    rpmbuild --target x86_64 -bb $(TOPDIR)/SPECS/mypackage.spec --define '_topdir $(TOPDIR)' --define '_arch x86_64' --define '_working_dir $(CURDIR)'



perlbin: perlthing/binaries/hello.pl



perlthing/binaries/hello.pl: perlthing/scripts/hello.pl Makefile

    /usr/local/bin/pp -M File::** -M PAR:: --clean --verbose=2 --output=$@ $<



clean:

    rm perlthing/binaries/hello.pl



[0] [ishpeck@centbox03 /tmp/examply]$ make perlbin >/dev/null ; echo $?

0

[0] [ishpeck@centbox03 /tmp/examply]$ file perlthing/binaries/hello.pl

perlthing/binaries/hello.pl: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=7d5b38a792018d0202a96ce8645b00591e7ea7c5, stripped

[0] [ishpeck@centbox03 /tmp/examply]$ ./perlthing/binaries/hello.pl

Hello, world!

So far, so good. It even works when I copy the binary to a machine with no perl interpreter:

core@CoreOS-1 ~ $ which perl

which: no perl in (/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/opt/bin)

core@CoreOS-1 ~ $ ./hello.pl

Hello, world!

I want to package this in an RPM:

[0] [ishpeck@centbox03 /tmp/examply]$ cat packaging/SPECS/mypackage.spec

Name:           ishy-mypackage

Version:        0.1

Release:        1%{?dist}

Summary:        My example package



License:        MIT

URL:            http://ishpeck.net



%description

This is my example package that includes a perl script bundled as a binary via PAR::Packer



%prep

echo "Prepare scriptlet is empty"



%build

echo "Nothing really to do"



%install

rm -rf $RPM_BUILD_ROOT

mkdir -p $RPM_BUILD_ROOT/usr/local/bin/

cp %{_working_dir}/perlthing/binaries/hello.pl $RPM_BUILD_ROOT/usr/local/bin/



%files

/usr/local/bin/hello.pl

[0] [ishpeck@centbox03 /tmp/examply]$ grep rpmbuild Makefile

        rpmbuild --target x86_64 -bb $(TOPDIR)/SPECS/mypackage.spec --define '_topdir $(TOPDIR)' --define '_arch x86_64' --define '_working_dir $(CURDIR)'

[0] [ishpeck@centbox03 /tmp/examply]$ make 

But when I install the package, the perl binary doesn't work anymore!

[0] [ishpeck@centbox03 /tmp/examply]$ sudo rpm -i ./packaging/RPMS/x86_64/ishy-mypackage-0.1-1.el7.x86_64.rpm

[0] [ishpeck@centbox03 /tmp/examply]$ which hello.pl

/usr/local/bin/hello.pl

[0] [ishpeck@centbox03 /tmp/examply]$ hello.pl

Usage: /usr/local/bin/hello.pl [ -Alib.par ] [ -Idir ] [ -Mmodule ] [ src.par ] [ program.pl ]

/usr/local/bin/hello.pl [ -B|-b ] [-Ooutfile] src.par

Removing files in "/tmp/par-6973687065636b/temp-51174"

Undefined subroutine &File::Find::finddepth called at -e line 11.

END failed--call queue aborted at -e line 616.

I don't assume this is a problem with the way I'm using pp to generate the binary because it seems to work everywhere if I just copy it directly. My brain wants to place the blame on (how I use) rpmbuild but I don't even know where to begin with this.

Is there some arcane detail about rpmbuild that I'm missing here?