| #!/usr/bin/env perl |
| # SPDX-License-Identifier: GPL-2.0-or-later |
| use strict; |
| |
| # Copyright (c) 2017-2019 Mauro Carvalho Chehab <mchehab@kernel.org> |
| # |
| |
| my $prefix = "./"; |
| $prefix = "$ENV{'srctree'}/" if ($ENV{'srctree'}); |
| |
| my $conf = $prefix . "Documentation/conf.py"; |
| my $requirement_file = $prefix . "Documentation/sphinx/requirements.txt"; |
| my $virtenv_prefix = "sphinx_"; |
| |
| # |
| # Static vars |
| # |
| |
| my %missing; |
| my $system_release; |
| my $need = 0; |
| my $optional = 0; |
| my $need_symlink = 0; |
| my $need_sphinx = 0; |
| my $rec_sphinx_upgrade = 0; |
| my $install = ""; |
| my $virtenv_dir = ""; |
| my $min_version; |
| |
| # |
| # Command line arguments |
| # |
| |
| my $pdf = 1; |
| my $virtualenv = 1; |
| my $version_check = 0; |
| |
| # |
| # List of required texlive packages on Fedora and OpenSuse |
| # |
| |
| my %texlive = ( |
| 'amsfonts.sty' => 'texlive-amsfonts', |
| 'amsmath.sty' => 'texlive-amsmath', |
| 'amssymb.sty' => 'texlive-amsfonts', |
| 'amsthm.sty' => 'texlive-amscls', |
| 'anyfontsize.sty' => 'texlive-anyfontsize', |
| 'atbegshi.sty' => 'texlive-oberdiek', |
| 'bm.sty' => 'texlive-tools', |
| 'capt-of.sty' => 'texlive-capt-of', |
| 'cmap.sty' => 'texlive-cmap', |
| 'ecrm1000.tfm' => 'texlive-ec', |
| 'eqparbox.sty' => 'texlive-eqparbox', |
| 'eu1enc.def' => 'texlive-euenc', |
| 'fancybox.sty' => 'texlive-fancybox', |
| 'fancyvrb.sty' => 'texlive-fancyvrb', |
| 'float.sty' => 'texlive-float', |
| 'fncychap.sty' => 'texlive-fncychap', |
| 'footnote.sty' => 'texlive-mdwtools', |
| 'framed.sty' => 'texlive-framed', |
| 'luatex85.sty' => 'texlive-luatex85', |
| 'multirow.sty' => 'texlive-multirow', |
| 'needspace.sty' => 'texlive-needspace', |
| 'palatino.sty' => 'texlive-psnfss', |
| 'parskip.sty' => 'texlive-parskip', |
| 'polyglossia.sty' => 'texlive-polyglossia', |
| 'tabulary.sty' => 'texlive-tabulary', |
| 'threeparttable.sty' => 'texlive-threeparttable', |
| 'titlesec.sty' => 'texlive-titlesec', |
| 'ucs.sty' => 'texlive-ucs', |
| 'upquote.sty' => 'texlive-upquote', |
| 'wrapfig.sty' => 'texlive-wrapfig', |
| ); |
| |
| # |
| # Subroutines that checks if a feature exists |
| # |
| |
| sub check_missing(%) |
| { |
| my %map = %{$_[0]}; |
| |
| foreach my $prog (sort keys %missing) { |
| my $is_optional = $missing{$prog}; |
| |
| # At least on some LTS distros like CentOS 7, texlive doesn't |
| # provide all packages we need. When such distros are |
| # detected, we have to disable PDF output. |
| # |
| # So, we need to ignore the packages that distros would |
| # need for LaTeX to work |
| if ($is_optional == 2 && !$pdf) { |
| $optional--; |
| next; |
| } |
| |
| if ($is_optional) { |
| print "Warning: better to also install \"$prog\".\n"; |
| } else { |
| print "ERROR: please install \"$prog\", otherwise, build won't work.\n"; |
| } |
| if (defined($map{$prog})) { |
| $install .= " " . $map{$prog}; |
| } else { |
| $install .= " " . $prog; |
| } |
| } |
| |
| $install =~ s/^\s//; |
| } |
| |
| sub add_package($$) |
| { |
| my $package = shift; |
| my $is_optional = shift; |
| |
| $missing{$package} = $is_optional; |
| if ($is_optional) { |
| $optional++; |
| } else { |
| $need++; |
| } |
| } |
| |
| sub check_missing_file($$$) |
| { |
| my $file = shift; |
| my $package = shift; |
| my $is_optional = shift; |
| |
| return if(-e $file); |
| |
| add_package($package, $is_optional); |
| } |
| |
| sub findprog($) |
| { |
| foreach(split(/:/, $ENV{PATH})) { |
| return "$_/$_[0]" if(-x "$_/$_[0]"); |
| } |
| } |
| |
| sub check_program($$) |
| { |
| my $prog = shift; |
| my $is_optional = shift; |
| |
| return if findprog($prog); |
| |
| add_package($prog, $is_optional); |
| } |
| |
| sub check_perl_module($$) |
| { |
| my $prog = shift; |
| my $is_optional = shift; |
| |
| my $err = system("perl -M$prog -e 1 2>/dev/null /dev/null"); |
| return if ($err == 0); |
| |
| add_package($prog, $is_optional); |
| } |
| |
| sub check_python_module($$) |
| { |
| my $prog = shift; |
| my $is_optional = shift; |
| |
| my $err = system("python3 -c 'import $prog' 2>/dev/null /dev/null"); |
| return if ($err == 0); |
| my $err = system("python -c 'import $prog' 2>/dev/null /dev/null"); |
| return if ($err == 0); |
| |
| add_package($prog, $is_optional); |
| } |
| |
| sub check_rpm_missing($$) |
| { |
| my @pkgs = @{$_[0]}; |
| my $is_optional = $_[1]; |
| |
| foreach my $prog(@pkgs) { |
| my $err = system("rpm -q '$prog' 2>/dev/null >/dev/null"); |
| add_package($prog, $is_optional) if ($err); |
| } |
| } |
| |
| sub check_pacman_missing($$) |
| { |
| my @pkgs = @{$_[0]}; |
| my $is_optional = $_[1]; |
| |
| foreach my $prog(@pkgs) { |
| my $err = system("pacman -Q '$prog' 2>/dev/null >/dev/null"); |
| add_package($prog, $is_optional) if ($err); |
| } |
| } |
| |
| sub check_missing_tex($) |
| { |
| my $is_optional = shift; |
| my $kpsewhich = findprog("kpsewhich"); |
| |
| foreach my $prog(keys %texlive) { |
| my $package = $texlive{$prog}; |
| if (!$kpsewhich) { |
| add_package($package, $is_optional); |
| next; |
| } |
| my $file = qx($kpsewhich $prog); |
| add_package($package, $is_optional) if ($file =~ /^\s*$/); |
| } |
| } |
| |
| sub get_sphinx_fname() |
| { |
| my $fname = "sphinx-build"; |
| return $fname if findprog($fname); |
| |
| $fname = "sphinx-build-3"; |
| if (findprog($fname)) { |
| $need_symlink = 1; |
| return $fname; |
| } |
| |
| if ($virtualenv) { |
| my $prog = findprog("virtualenv-3"); |
| $prog = findprog("virtualenv-3.5") if (!$prog); |
| |
| check_program("virtualenv", 0) if (!$prog); |
| $need_sphinx = 1; |
| } else { |
| add_package("python-sphinx", 0); |
| } |
| |
| return ""; |
| } |
| |
| sub check_sphinx() |
| { |
| my $rec_version; |
| my $cur_version; |
| |
| open IN, $conf or die "Can't open $conf"; |
| while (<IN>) { |
| if (m/^\s*needs_sphinx\s*=\s*[\'\"]([\d\.]+)[\'\"]/) { |
| $min_version=$1; |
| last; |
| } |
| } |
| close IN; |
| |
| die "Can't get needs_sphinx version from $conf" if (!$min_version); |
| |
| open IN, $requirement_file or die "Can't open $requirement_file"; |
| while (<IN>) { |
| if (m/^\s*Sphinx\s*==\s*([\d\.]+)$/) { |
| $rec_version=$1; |
| last; |
| } |
| } |
| close IN; |
| |
| die "Can't get recommended sphinx version from $requirement_file" if (!$min_version); |
| |
| $virtenv_dir = $virtenv_prefix . $rec_version; |
| |
| my $sphinx = get_sphinx_fname(); |
| return if ($sphinx eq ""); |
| |
| open IN, "$sphinx --version 2>&1 |" or die "$sphinx returned an error"; |
| while (<IN>) { |
| if (m/^\s*sphinx-build\s+([\d\.]+)$/) { |
| $cur_version=$1; |
| last; |
| } |
| # Sphinx 1.2.x uses a different format |
| if (m/^\s*Sphinx.*\s+([\d\.]+)$/) { |
| $cur_version=$1; |
| last; |
| } |
| } |
| close IN; |
| |
| die "$sphinx didn't return its version" if (!$cur_version); |
| |
| if ($cur_version lt $min_version) { |
| printf "ERROR: Sphinx version is %s. It should be >= %s (recommended >= %s)\n", |
| $cur_version, $min_version, $rec_version;; |
| $need_sphinx = 1; |
| return; |
| } |
| |
| if ($cur_version lt $rec_version) { |
| printf "Sphinx version %s\n", $cur_version; |
| print "Warning: It is recommended at least Sphinx version $rec_version.\n"; |
| $rec_sphinx_upgrade = 1; |
| return; |
| } |
| |
| # On version check mode, just assume Sphinx has all mandatory deps |
| exit (0) if ($version_check); |
| } |
| |
| # |
| # Ancillary subroutines |
| # |
| |
| sub catcheck($) |
| { |
| my $res = ""; |
| $res = qx(cat $_[0]) if (-r $_[0]); |
| return $res; |
| } |
| |
| sub which($) |
| { |
| my $file = shift; |
| my @path = split ":", $ENV{PATH}; |
| |
| foreach my $dir(@path) { |
| my $name = $dir.'/'.$file; |
| return $name if (-x $name ); |
| } |
| return undef; |
| } |
| |
| # |
| # Subroutines that check distro-specific hints |
| # |
| |
| sub give_debian_hints() |
| { |
| my %map = ( |
| "python-sphinx" => "python3-sphinx", |
| "sphinx_rtd_theme" => "python3-sphinx-rtd-theme", |
| "virtualenv" => "virtualenv", |
| "dot" => "graphviz", |
| "convert" => "imagemagick", |
| "Pod::Usage" => "perl-modules", |
| "xelatex" => "texlive-xetex", |
| "rsvg-convert" => "librsvg2-bin", |
| ); |
| |
| if ($pdf) { |
| check_missing_file("/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf", |
| "fonts-dejavu", 2); |
| |
| check_missing_file("/usr/share/fonts/noto-cjk/NotoSansCJK-Regular.ttc", |
| "fonts-noto-cjk", 2); |
| } |
| |
| check_program("dvipng", 2) if ($pdf); |
| check_missing(\%map); |
| |
| return if (!$need && !$optional); |
| printf("You should run:\n\n\tsudo apt-get install $install\n"); |
| } |
| |
| sub give_redhat_hints() |
| { |
| my %map = ( |
| "python-sphinx" => "python3-sphinx", |
| "sphinx_rtd_theme" => "python3-sphinx_rtd_theme", |
| "virtualenv" => "python3-virtualenv", |
| "dot" => "graphviz", |
| "convert" => "ImageMagick", |
| "Pod::Usage" => "perl-Pod-Usage", |
| "xelatex" => "texlive-xetex-bin", |
| "rsvg-convert" => "librsvg2-tools", |
| ); |
| |
| my @fedora26_opt_pkgs = ( |
| "graphviz-gd", # Fedora 26: needed for PDF support |
| ); |
| |
| my @fedora_tex_pkgs = ( |
| "texlive-collection-fontsrecommended", |
| "texlive-collection-latex", |
| "texlive-xecjk", |
| "dejavu-sans-fonts", |
| "dejavu-serif-fonts", |
| "dejavu-sans-mono-fonts", |
| ); |
| |
| # |
| # Checks valid for RHEL/CentOS version 7.x. |
| # |
| my $old = 0; |
| my $rel; |
| $rel = $1 if ($system_release =~ /release\s+(\d+)/); |
| |
| if (!($system_release =~ /Fedora/)) { |
| $map{"virtualenv"} = "python-virtualenv"; |
| |
| if ($rel && $rel < 8) { |
| $old = 1; |
| $pdf = 0; |
| |
| printf("Note: texlive packages on RHEL/CENTOS <= 7 are incomplete. Can't support PDF output\n"); |
| printf("If you want to build PDF, please read:\n"); |
| printf("\thttps://www.systutorials.com/241660/how-to-install-tex-live-on-centos-7-linux/\n"); |
| } |
| } else { |
| if ($rel && $rel < 26) { |
| $old = 1; |
| } |
| } |
| if (!$rel) { |
| printf("Couldn't identify release number\n"); |
| $old = 1; |
| $pdf = 0; |
| } |
| |
| if ($pdf) { |
| check_missing_file("/usr/share/fonts/google-noto-cjk/NotoSansCJK-Regular.ttc", |
| "google-noto-sans-cjk-ttc-fonts", 2); |
| } |
| |
| check_rpm_missing(\@fedora26_opt_pkgs, 2) if ($pdf && !$old); |
| check_rpm_missing(\@fedora_tex_pkgs, 2) if ($pdf); |
| check_missing_tex(2) if ($pdf); |
| check_missing(\%map); |
| |
| return if (!$need && !$optional); |
| |
| if (!$old) { |
| # dnf, for Fedora 18+ |
| printf("You should run:\n\n\tsudo dnf install -y $install\n"); |
| } else { |
| # yum, for RHEL (and clones) or Fedora version < 18 |
| printf("You should run:\n\n\tsudo yum install -y $install\n"); |
| } |
| } |
| |
| sub give_opensuse_hints() |
| { |
| my %map = ( |
| "python-sphinx" => "python3-sphinx", |
| "sphinx_rtd_theme" => "python3-sphinx_rtd_theme", |
| "virtualenv" => "python3-virtualenv", |
| "dot" => "graphviz", |
| "convert" => "ImageMagick", |
| "Pod::Usage" => "perl-Pod-Usage", |
| "xelatex" => "texlive-xetex-bin", |
| "rsvg-convert" => "rsvg-view", |
| ); |
| |
| my @suse_tex_pkgs = ( |
| "texlive-babel-english", |
| "texlive-caption", |
| "texlive-colortbl", |
| "texlive-courier", |
| "texlive-dvips", |
| "texlive-helvetic", |
| "texlive-makeindex", |
| "texlive-metafont", |
| "texlive-metapost", |
| "texlive-palatino", |
| "texlive-preview", |
| "texlive-times", |
| "texlive-zapfchan", |
| "texlive-zapfding", |
| ); |
| |
| $map{"latexmk"} = "texlive-latexmk-bin"; |
| |
| # FIXME: add support for installing CJK fonts |
| # |
| # I tried hard, but was unable to find a way to install |
| # "Noto Sans CJK SC" on openSUSE |
| |
| check_rpm_missing(\@suse_tex_pkgs, 2) if ($pdf); |
| check_missing_tex(2) if ($pdf); |
| check_missing(\%map); |
| |
| return if (!$need && !$optional); |
| printf("You should run:\n\n\tsudo zypper install --no-recommends $install\n"); |
| } |
| |
| sub give_mageia_hints() |
| { |
| my %map = ( |
| "python-sphinx" => "python3-sphinx", |
| "sphinx_rtd_theme" => "python3-sphinx_rtd_theme", |
| "virtualenv" => "python3-virtualenv", |
| "dot" => "graphviz", |
| "convert" => "ImageMagick", |
| "Pod::Usage" => "perl-Pod-Usage", |
| "xelatex" => "texlive", |
| "rsvg-convert" => "librsvg2-tools", |
| ); |
| |
| my @tex_pkgs = ( |
| "texlive-fontsextra", |
| ); |
| |
| $map{"latexmk"} = "texlive-collection-basic"; |
| |
| if ($pdf) { |
| check_missing_file("/usr/share/fonts/google-noto-cjk/NotoSansCJK-Regular.ttc", |
| "google-noto-sans-cjk-ttc-fonts", 2); |
| } |
| |
| check_rpm_missing(\@tex_pkgs, 2) if ($pdf); |
| check_missing(\%map); |
| |
| return if (!$need && !$optional); |
| printf("You should run:\n\n\tsudo urpmi $install\n"); |
| } |
| |
| sub give_arch_linux_hints() |
| { |
| my %map = ( |
| "sphinx_rtd_theme" => "python-sphinx_rtd_theme", |
| "virtualenv" => "python-virtualenv", |
| "dot" => "graphviz", |
| "convert" => "imagemagick", |
| "xelatex" => "texlive-bin", |
| "rsvg-convert" => "extra/librsvg", |
| ); |
| |
| my @archlinux_tex_pkgs = ( |
| "texlive-core", |
| "texlive-latexextra", |
| "ttf-dejavu", |
| ); |
| check_pacman_missing(\@archlinux_tex_pkgs, 2) if ($pdf); |
| |
| if ($pdf) { |
| check_missing_file("/usr/share/fonts/noto-cjk/NotoSansCJK-Regular.ttc", |
| "noto-fonts-cjk", 2); |
| } |
| |
| check_missing(\%map); |
| |
| return if (!$need && !$optional); |
| printf("You should run:\n\n\tsudo pacman -S $install\n"); |
| } |
| |
| sub give_gentoo_hints() |
| { |
| my %map = ( |
| "sphinx_rtd_theme" => "dev-python/sphinx_rtd_theme", |
| "virtualenv" => "dev-python/virtualenv", |
| "dot" => "media-gfx/graphviz", |
| "convert" => "media-gfx/imagemagick", |
| "xelatex" => "dev-texlive/texlive-xetex media-fonts/dejavu", |
| "rsvg-convert" => "gnome-base/librsvg", |
| ); |
| |
| check_missing_file("/usr/share/fonts/dejavu/DejaVuSans.ttf", |
| "media-fonts/dejavu", 2) if ($pdf); |
| |
| if ($pdf) { |
| check_missing_file("/usr/share/fonts/noto-cjk/NotoSansCJKsc-Regular.otf", |
| "media-fonts/noto-cjk", 2); |
| } |
| |
| check_missing(\%map); |
| |
| return if (!$need && !$optional); |
| |
| printf("You should run:\n\n"); |
| |
| my $imagemagick = "media-gfx/imagemagick svg png"; |
| my $cairo = "media-gfx/graphviz cairo pdf"; |
| my $portage_imagemagick = "/etc/portage/package.use/imagemagick"; |
| my $portage_cairo = "/etc/portage/package.use/graphviz"; |
| |
| if (qx(cat $portage_imagemagick) ne "$imagemagick\n") { |
| printf("\tsudo su -c 'echo \"$imagemagick\" > $portage_imagemagick'\n") |
| } |
| if (qx(cat $portage_cairo) ne "$cairo\n") { |
| printf("\tsudo su -c 'echo \"$cairo\" > $portage_cairo'\n"); |
| } |
| |
| printf("\tsudo emerge --ask $install\n"); |
| |
| } |
| |
| sub check_distros() |
| { |
| # Distro-specific hints |
| if ($system_release =~ /Red Hat Enterprise Linux/) { |
| give_redhat_hints; |
| return; |
| } |
| if ($system_release =~ /CentOS/) { |
| give_redhat_hints; |
| return; |
| } |
| if ($system_release =~ /Scientific Linux/) { |
| give_redhat_hints; |
| return; |
| } |
| if ($system_release =~ /Oracle Linux Server/) { |
| give_redhat_hints; |
| return; |
| } |
| if ($system_release =~ /Fedora/) { |
| give_redhat_hints; |
| return; |
| } |
| if ($system_release =~ /Ubuntu/) { |
| give_debian_hints; |
| return; |
| } |
| if ($system_release =~ /Debian/) { |
| give_debian_hints; |
| return; |
| } |
| if ($system_release =~ /openSUSE/) { |
| give_opensuse_hints; |
| return; |
| } |
| if ($system_release =~ /Mageia/) { |
| give_mageia_hints; |
| return; |
| } |
| if ($system_release =~ /Arch Linux/) { |
| give_arch_linux_hints; |
| return; |
| } |
| if ($system_release =~ /Gentoo/) { |
| give_gentoo_hints; |
| return; |
| } |
| |
| # |
| # Fall-back to generic hint code for other distros |
| # That's far from ideal, specially for LaTeX dependencies. |
| # |
| my %map = ( |
| "sphinx-build" => "sphinx" |
| ); |
| check_missing_tex(2) if ($pdf); |
| check_missing(\%map); |
| print "I don't know distro $system_release.\n"; |
| print "So, I can't provide you a hint with the install procedure.\n"; |
| print "There are likely missing dependencies.\n"; |
| } |
| |
| # |
| # Common dependencies |
| # |
| |
| sub check_needs() |
| { |
| # Check for needed programs/tools |
| check_sphinx(); |
| |
| if ($system_release) { |
| print "Detected OS: $system_release.\n\n"; |
| } else { |
| print "Unknown OS\n\n"; |
| } |
| |
| print "To upgrade Sphinx, use:\n\n" if ($rec_sphinx_upgrade); |
| |
| # Check for needed programs/tools |
| check_perl_module("Pod::Usage", 0); |
| check_program("make", 0); |
| check_program("gcc", 0); |
| check_python_module("sphinx_rtd_theme", 1) if (!$virtualenv); |
| check_program("dot", 1); |
| check_program("convert", 1); |
| |
| # Extra PDF files - should use 2 for is_optional |
| check_program("xelatex", 2) if ($pdf); |
| check_program("rsvg-convert", 2) if ($pdf); |
| check_program("latexmk", 2) if ($pdf); |
| |
| check_distros(); |
| |
| if ($need_symlink) { |
| printf "\tsudo ln -sf %s /usr/bin/sphinx-build\n\n", |
| which("sphinx-build-3"); |
| } |
| if ($need_sphinx || $rec_sphinx_upgrade) { |
| my $min_activate = "$ENV{'PWD'}/${virtenv_prefix}${min_version}/bin/activate"; |
| my @activates = glob "$ENV{'PWD'}/${virtenv_prefix}*/bin/activate"; |
| |
| @activates = sort {$b cmp $a} @activates; |
| |
| if ($need_sphinx && scalar @activates > 0 && $activates[0] ge $min_activate) { |
| printf "\nNeed to activate a compatible Sphinx version on virtualenv with:\n"; |
| printf "\t. $activates[0]\n"; |
| exit (1); |
| } else { |
| my $rec_activate = "$virtenv_dir/bin/activate"; |
| my $virtualenv = findprog("virtualenv-3"); |
| $virtualenv = findprog("virtualenv-3.5") if (!$virtualenv); |
| $virtualenv = findprog("virtualenv") if (!$virtualenv); |
| $virtualenv = "virtualenv" if (!$virtualenv); |
| |
| printf "\t$virtualenv $virtenv_dir\n"; |
| printf "\t. $rec_activate\n"; |
| printf "\tpip install -r $requirement_file\n"; |
| |
| $need++ if (!$rec_sphinx_upgrade); |
| } |
| } |
| printf "\n"; |
| |
| print "All optional dependencies are met.\n" if (!$optional); |
| |
| if ($need == 1) { |
| die "Can't build as $need mandatory dependency is missing"; |
| } elsif ($need) { |
| die "Can't build as $need mandatory dependencies are missing"; |
| } |
| |
| print "Needed package dependencies are met.\n"; |
| } |
| |
| # |
| # Main |
| # |
| |
| while (@ARGV) { |
| my $arg = shift(@ARGV); |
| |
| if ($arg eq "--no-virtualenv") { |
| $virtualenv = 0; |
| } elsif ($arg eq "--no-pdf"){ |
| $pdf = 0; |
| } elsif ($arg eq "--version-check"){ |
| $version_check = 1; |
| } else { |
| print "Usage:\n\t$0 <--no-virtualenv> <--no-pdf> <--version-check>\n\n"; |
| print "Where:\n"; |
| print "\t--no-virtualenv\t- Recommend installing Sphinx instead of using a virtualenv\n"; |
| print "\t--version-check\t- if version is compatible, don't check for missing dependencies\n"; |
| print "\t--no-pdf\t- don't check for dependencies required to build PDF docs\n\n"; |
| exit -1; |
| } |
| } |
| |
| # |
| # Determine the system type. There's no standard unique way that would |
| # work with all distros with a minimal package install. So, several |
| # methods are used here. |
| # |
| # By default, it will use lsb_release function. If not available, it will |
| # fail back to reading the known different places where the distro name |
| # is stored |
| # |
| |
| $system_release = qx(lsb_release -d) if which("lsb_release"); |
| $system_release =~ s/Description:\s*// if ($system_release); |
| $system_release = catcheck("/etc/system-release") if !$system_release; |
| $system_release = catcheck("/etc/redhat-release") if !$system_release; |
| $system_release = catcheck("/etc/lsb-release") if !$system_release; |
| $system_release = catcheck("/etc/gentoo-release") if !$system_release; |
| $system_release = catcheck("/etc/issue") if !$system_release; |
| $system_release =~ s/\s+$//; |
| |
| check_needs; |