perl-App-ChangeShebang/perl-App-ChangeShebang.spec

#
# spec file for package perl-App-ChangeShebang
#
# Copyright (c) 2024 SUSE LLC
#
# All modifications and additions to the file contributed by third parties
# remain the property of their copyright owners, unless otherwise agreed
# upon. The license for this file, and modifications and additions to the
# file, is the same license as for the pristine package itself (unless the
# license for the pristine package is not an Open Source License, in which
# case the license is the MIT License). An "Open Source License" is a
# license that conforms to the Open Source Definition (Version 1.9)
# published by the Open Source Initiative.

# Please submit bugfixes or comments via https://bugs.opensuse.org/
#


%define cpan_name App-ChangeShebang
Name:           perl-App-ChangeShebang
Version:        0.100.0
Release:        0
# 0.10 -> normalize -> 0.100.0
%define cpan_version 0.10
License:        Artistic-1.0 OR GPL-1.0-or-later
Summary:        Change shebang lines for relocatable perl
URL:            https://metacpan.org/release/%{cpan_name}
Source0:        https://cpan.metacpan.org/authors/id/S/SK/SKAJI/%{cpan_name}-%{cpan_version}.tar.gz
Source100:      README.md
BuildArch:      noarch
BuildRequires:  perl
BuildRequires:  perl-macros
BuildRequires:  perl(Getopt::Long) >= 2.39
BuildRequires:  perl(Module::Build)
BuildRequires:  perl(Module::Build::Tiny) >= 0.034
Requires:       perl(Getopt::Long) >= 2.39
Provides:       perl(App::ChangeShebang) = %{version}
%undefine       __perllib_provides
%{perl_requires}

%description
change-shebang changes shebang lines from

    #!/path/to/bin/perl

to

    #!/bin/sh
    exec "$(dirname "$0")"/perl -x "$0" "$@"
    #!perl

Why do we need this?

Let's say you build perl with relocatable enabled ('-Duserelocatableinc').
Then the shebang lines of executable scripts point at the installation time
perl binary path.

So if you move your perl directory to other places, the shebang lines of
executable scripts point at a wrong perl binary and we cannot execute
scripts. Oops!

A solution of that problem is to replace shebang lines by

    #!/bin/sh
    exec "$(dirname "$0")"/perl -x "$0" "$@"
    #!perl

which means that scripts will be executed by the perl located in the same
directory.

%prep
%autosetup  -n %{cpan_name}-%{cpan_version}

%build
perl Build.PL --installdirs=vendor
./Build build --flags=%{?_smp_mflags}

%check
./Build test

%install
./Build install --destdir=%{buildroot} --create_packlist=0
%perl_gen_filelist

%files -f %{name}.files
%doc Changes
%license LICENSE

%changelog