]>
git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - scripts/sphinx-pre-install
2 # SPDX-License-Identifier: GPL-2.0-or-later
5 # Copyright (c) 2017-2020 Mauro Carvalho Chehab <mchehab@kernel.org>
9 $prefix = "$ENV{'srctree'}/" if ($ENV{'srctree'});
11 my $conf = $prefix . "Documentation/conf.py";
12 my $requirement_file = $prefix . "Documentation/sphinx/requirements.txt";
13 my $virtenv_prefix = "sphinx_";
26 my $need_virtualenv = 0;
27 my $rec_sphinx_upgrade = 0;
34 my $rec_version = "1.7.9"; # PDF won't build here
35 my $min_pdf_version = "2.4.4"; # Min version where pdf builds
39 # Command line arguments
44 my $version_check = 0;
47 # List of required texlive packages on Fedora and OpenSuse
51 'amsfonts.sty' => 'texlive-amsfonts',
52 'amsmath.sty' => 'texlive-amsmath',
53 'amssymb.sty' => 'texlive-amsfonts',
54 'amsthm.sty' => 'texlive-amscls',
55 'anyfontsize.sty' => 'texlive-anyfontsize',
56 'atbegshi.sty' => 'texlive-oberdiek',
57 'bm.sty' => 'texlive-tools',
58 'capt-of.sty' => 'texlive-capt-of',
59 'cmap.sty' => 'texlive-cmap',
60 'ecrm1000.tfm' => 'texlive-ec',
61 'eqparbox.sty' => 'texlive-eqparbox',
62 'eu1enc.def' => 'texlive-euenc',
63 'fancybox.sty' => 'texlive-fancybox',
64 'fancyvrb.sty' => 'texlive-fancyvrb',
65 'float.sty' => 'texlive-float',
66 'fncychap.sty' => 'texlive-fncychap',
67 'footnote.sty' => 'texlive-mdwtools',
68 'framed.sty' => 'texlive-framed',
69 'luatex85.sty' => 'texlive-luatex85',
70 'multirow.sty' => 'texlive-multirow',
71 'needspace.sty' => 'texlive-needspace',
72 'palatino.sty' => 'texlive-psnfss',
73 'parskip.sty' => 'texlive-parskip',
74 'polyglossia.sty' => 'texlive-polyglossia',
75 'tabulary.sty' => 'texlive-tabulary',
76 'threeparttable.sty' => 'texlive-threeparttable',
77 'titlesec.sty' => 'texlive-titlesec',
78 'ucs.sty' => 'texlive-ucs',
79 'upquote.sty' => 'texlive-upquote',
80 'wrapfig.sty' => 'texlive-wrapfig',
81 'ctexhook.sty' => 'texlive-ctex',
85 # Subroutines that checks if a feature exists
92 foreach my $prog (sort keys %missing) {
93 my $is_optional = $missing{$prog};
95 # At least on some LTS distros like CentOS 7, texlive doesn't
96 # provide all packages we need. When such distros are
97 # detected, we have to disable PDF output.
99 # So, we need to ignore the packages that distros would
100 # need for LaTeX to work
101 if ($is_optional == 2 && !$pdf) {
107 print "Warning: better to also install \"$prog\".\n";
109 print "ERROR
: please install
\"$prog\", otherwise, build won't work.\n";
111 if (defined($map{$prog})) {
112 $install .= " " . $map{$prog};
114 $install .= " " . $prog;
124 my $is_optional = shift;
126 $missing{$package} = $is_optional;
134 sub check_missing_file
($$$)
138 my $is_optional = shift;
144 add_package
($package, $is_optional);
149 foreach(split(/:/, $ENV{PATH
})) {
150 return "$_/$_[0]" if(-x
"$_/$_[0]");
154 sub find_python_no_venv
()
158 my $cur_dir = qx(pwd);
159 $cur_dir =~ s/\s+$//;
161 foreach my $dir (split(/:/, $ENV{PATH
})) {
162 next if ($dir =~ m
,($cur_dir)/sphinx
,);
163 return "$dir/python3" if(-x
"$dir/python3");
165 foreach my $dir (split(/:/, $ENV{PATH
})) {
166 next if ($dir =~ m
,($cur_dir)/sphinx
,);
167 return "$dir/python" if(-x
"$dir/python");
172 sub check_program
($$)
175 my $is_optional = shift;
177 return $prog if findprog
($prog);
179 add_package
($prog, $is_optional);
182 sub check_perl_module
($$)
185 my $is_optional = shift;
187 my $err = system("perl -M$prog -e 1 2>/dev/null /dev/null");
188 return if ($err == 0);
190 add_package
($prog, $is_optional);
193 sub check_python_module
($$)
196 my $is_optional = shift;
198 return if (!$python_cmd);
200 my $err = system("$python_cmd -c 'import $prog' 2>/dev/null /dev/null");
201 return if ($err == 0);
203 add_package
($prog, $is_optional);
206 sub check_rpm_missing
($$)
209 my $is_optional = $_[1];
211 foreach my $prog(@pkgs) {
212 my $err = system("rpm -q '$prog' 2>/dev/null >/dev/null");
213 add_package
($prog, $is_optional) if ($err);
217 sub check_pacman_missing
($$)
220 my $is_optional = $_[1];
222 foreach my $prog(@pkgs) {
223 my $err = system("pacman -Q '$prog' 2>/dev/null >/dev/null");
224 add_package
($prog, $is_optional) if ($err);
228 sub check_missing_tex
($)
230 my $is_optional = shift;
231 my $kpsewhich = findprog
("kpsewhich");
233 foreach my $prog(keys %texlive) {
234 my $package = $texlive{$prog};
236 add_package
($package, $is_optional);
239 my $file = qx($kpsewhich $prog);
240 add_package
($package, $is_optional) if ($file =~ /^\s*$/);
244 sub get_sphinx_fname
()
246 my $fname = "sphinx-build";
247 return $fname if findprog
($fname);
249 $fname = "sphinx-build-3";
250 if (findprog
($fname)) {
258 sub get_sphinx_version
($)
263 open IN
, "$cmd --version 2>&1 |";
265 if (m/^\s*sphinx-build\s+([\d\.]+)((\+\/[\da-f
]+)|(b\d
+))?
$/) {
269 # Sphinx 1.2.x uses a different format
270 if (m/^\s*Sphinx.*\s+([\d\.]+)$/) {
283 open IN
, $conf or die "Can't open $conf";
285 if (m/^\s*needs_sphinx\s*=\s*[\'\"]([\d\.]+)[\'\"]/) {
292 die "Can't get needs_sphinx version from $conf" if (!$min_version);
294 open IN
, $requirement_file or die "Can't open $requirement_file";
296 if (m/^\s*Sphinx\s*==\s*([\d\.]+)$/) {
303 die "Can't get default sphinx version from $requirement_file" if (!$default_version);
305 $virtenv_dir = $virtenv_prefix . $default_version;
307 my $sphinx = get_sphinx_fname
();
313 $cur_version = get_sphinx_version
($sphinx);
314 die ("$sphinx returned an error") if (!$cur_version);
316 die "$sphinx didn't return its version" if (!$cur_version);
318 if ($cur_version lt $min_version) {
319 printf "ERROR: Sphinx version is %s. It should be >= %s (recommended >= %s)\n",
320 $cur_version, $min_version, $default_version;
325 return if ($cur_version lt $rec_version);
327 # On version check mode, just assume Sphinx has all mandatory deps
328 exit (0) if ($version_check);
332 # Ancillary subroutines
338 $res = qx(cat $_[0]) if (-r
$_[0]);
345 my @path = split ":", $ENV{PATH
};
347 foreach my $dir(@path) {
348 my $name = $dir.'/'.$file;
349 return $name if (-x
$name );
355 # Subroutines that check distro-specific hints
358 sub give_debian_hints
()
361 "python-sphinx" => "python3-sphinx",
362 "sphinx_rtd_theme" => "python3-sphinx-rtd-theme",
363 "ensurepip" => "python3-venv",
364 "virtualenv" => "virtualenv",
366 "convert" => "imagemagick",
367 "Pod::Usage" => "perl-modules",
368 "xelatex" => "texlive-xetex",
369 "rsvg-convert" => "librsvg2-bin",
373 check_missing_file
(["/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf"],
376 check_missing_file
(["/usr/share/fonts/noto-cjk/NotoSansCJK-Regular.ttc",
377 "/usr/share/fonts/opentype/noto/NotoSansCJK-Regular.ttc",
378 "/usr/share/fonts/opentype/noto/NotoSerifCJK-Regular.ttc"],
379 "fonts-noto-cjk", 2);
382 check_program
("dvipng", 2) if ($pdf);
383 check_missing
(\
%map);
385 return if (!$need && !$optional);
386 printf("You should run:\n\n\tsudo apt-get install $install\n");
389 sub give_redhat_hints
()
392 "python-sphinx" => "python3-sphinx",
393 "sphinx_rtd_theme" => "python3-sphinx_rtd_theme",
394 "virtualenv" => "python3-virtualenv",
396 "convert" => "ImageMagick",
397 "Pod::Usage" => "perl-Pod-Usage",
398 "xelatex" => "texlive-xetex-bin",
399 "rsvg-convert" => "librsvg2-tools",
402 my @fedora26_opt_pkgs = (
403 "graphviz-gd", # Fedora 26: needed for PDF support
406 my @fedora_tex_pkgs = (
407 "texlive-collection-fontsrecommended",
408 "texlive-collection-latex",
411 "dejavu-serif-fonts",
412 "dejavu-sans-mono-fonts",
416 # Checks valid for RHEL/CentOS version 7.x.
420 $rel = $1 if ($system_release =~ /release\s+(\d+)/);
422 if (!($system_release =~ /Fedora/)) {
423 $map{"virtualenv"} = "python-virtualenv";
425 if ($rel && $rel < 8) {
429 printf("Note: texlive packages on RHEL/CENTOS <= 7 are incomplete. Can't support PDF output\n");
430 printf("If you want to build PDF, please read:\n");
431 printf("\thttps://www.systutorials.com/241660/how-to-install-tex-live-on-centos-7-linux/\n");
434 if ($rel && $rel < 26) {
439 printf("Couldn't identify release number\n");
445 check_missing_file
(["/usr/share/fonts/google-noto-cjk/NotoSansCJK-Regular.ttc"],
446 "google-noto-sans-cjk-ttc-fonts", 2);
449 check_rpm_missing
(\
@fedora26_opt_pkgs, 2) if ($pdf && !$old);
450 check_rpm_missing
(\
@fedora_tex_pkgs, 2) if ($pdf);
451 check_missing_tex
(2) if ($pdf);
452 check_missing
(\
%map);
454 return if (!$need && !$optional);
457 # dnf, for Fedora 18+
458 printf("You should run:\n\n\tsudo dnf install -y $install\n");
460 # yum, for RHEL (and clones) or Fedora version < 18
461 printf("You should run:\n\n\tsudo yum install -y $install\n");
465 sub give_opensuse_hints
()
468 "python-sphinx" => "python3-sphinx",
469 "sphinx_rtd_theme" => "python3-sphinx_rtd_theme",
470 "virtualenv" => "python3-virtualenv",
472 "convert" => "ImageMagick",
473 "Pod::Usage" => "perl-Pod-Usage",
474 "xelatex" => "texlive-xetex-bin",
477 # On Tumbleweed, this package is also named rsvg-convert
478 $map{"rsvg-convert"} = "rsvg-view" if (!($system_release =~ /Tumbleweed/));
480 my @suse_tex_pkgs = (
481 "texlive-babel-english",
497 $map{"latexmk"} = "texlive-latexmk-bin";
499 # FIXME: add support for installing CJK fonts
501 # I tried hard, but was unable to find a way to install
502 # "Noto Sans CJK SC" on openSUSE
504 check_rpm_missing
(\
@suse_tex_pkgs, 2) if ($pdf);
505 check_missing_tex
(2) if ($pdf);
506 check_missing
(\
%map);
508 return if (!$need && !$optional);
509 printf("You should run:\n\n\tsudo zypper install --no-recommends $install\n");
512 sub give_mageia_hints
()
515 "python-sphinx" => "python3-sphinx",
516 "sphinx_rtd_theme" => "python3-sphinx_rtd_theme",
517 "virtualenv" => "python3-virtualenv",
519 "convert" => "ImageMagick",
520 "Pod::Usage" => "perl-Pod-Usage",
521 "xelatex" => "texlive",
522 "rsvg-convert" => "librsvg2",
526 "texlive-fontsextra",
529 $map{"latexmk"} = "texlive-collection-basic";
533 if ($system_release =~ /OpenMandriva/) {
534 $packager_cmd = "dnf install";
535 $noto_sans = "noto-sans-cjk-fonts";
536 @tex_pkgs = ( "texlive-collection-fontsextra" );
538 $packager_cmd = "urpmi";
539 $noto_sans = "google-noto-sans-cjk-ttc-fonts";
544 check_missing_file
(["/usr/share/fonts/google-noto-cjk/NotoSansCJK-Regular.ttc",
545 "/usr/share/fonts/TTF/NotoSans-Regular.ttf"],
549 check_rpm_missing
(\
@tex_pkgs, 2) if ($pdf);
550 check_missing
(\
%map);
552 return if (!$need && !$optional);
553 printf("You should run:\n\n\tsudo $packager_cmd $install\n");
556 sub give_arch_linux_hints
()
559 "sphinx_rtd_theme" => "python-sphinx_rtd_theme",
560 "virtualenv" => "python-virtualenv",
562 "convert" => "imagemagick",
563 "xelatex" => "texlive-bin",
564 "latexmk" => "texlive-core",
565 "rsvg-convert" => "extra/librsvg",
568 my @archlinux_tex_pkgs = (
570 "texlive-latexextra",
573 check_pacman_missing
(\
@archlinux_tex_pkgs, 2) if ($pdf);
576 check_missing_file
(["/usr/share/fonts/noto-cjk/NotoSansCJK-Regular.ttc"],
577 "noto-fonts-cjk", 2);
580 check_missing
(\
%map);
582 return if (!$need && !$optional);
583 printf("You should run:\n\n\tsudo pacman -S $install\n");
586 sub give_gentoo_hints
()
589 "sphinx_rtd_theme" => "dev-python/sphinx_rtd_theme",
590 "virtualenv" => "dev-python/virtualenv",
591 "dot" => "media-gfx/graphviz",
592 "convert" => "media-gfx/imagemagick",
593 "xelatex" => "dev-texlive/texlive-xetex media-fonts/dejavu",
594 "rsvg-convert" => "gnome-base/librsvg",
597 check_missing_file
(["/usr/share/fonts/dejavu/DejaVuSans.ttf"],
598 "media-fonts/dejavu", 2) if ($pdf);
601 check_missing_file
(["/usr/share/fonts/noto-cjk/NotoSansCJKsc-Regular.otf",
602 "/usr/share/fonts/noto-cjk/NotoSerifCJK-Regular.ttc"],
603 "media-fonts/noto-cjk", 2);
606 check_missing
(\
%map);
608 return if (!$need && !$optional);
610 printf("You should run:\n\n");
612 my $imagemagick = "media-gfx/imagemagick svg png";
613 my $cairo = "media-gfx/graphviz cairo pdf";
614 my $portage_imagemagick = "/etc/portage/package.use/imagemagick";
615 my $portage_cairo = "/etc/portage/package.use/graphviz";
617 if (qx(grep imagemagick $portage_imagemagick 2>/dev/null) eq "") {
618 printf("\tsudo su -c 'echo \"$imagemagick\" > $portage_imagemagick'\n")
620 if (qx(grep graphviz $portage_cairo 2>/dev/null) eq "") {
621 printf("\tsudo su -c 'echo \"$cairo\" > $portage_cairo'\n");
624 printf("\tsudo emerge --ask $install\n");
630 # Distro-specific hints
631 if ($system_release =~ /Red Hat Enterprise Linux/) {
635 if ($system_release =~ /CentOS/) {
639 if ($system_release =~ /Scientific Linux/) {
643 if ($system_release =~ /Oracle Linux Server/) {
647 if ($system_release =~ /Fedora/) {
651 if ($system_release =~ /Ubuntu/) {
655 if ($system_release =~ /Debian/) {
659 if ($system_release =~ /openSUSE/) {
663 if ($system_release =~ /Mageia/) {
667 if ($system_release =~ /OpenMandriva/) {
671 if ($system_release =~ /Arch Linux/) {
672 give_arch_linux_hints;
675 if ($system_release =~ /Gentoo/) {
681 # Fall-back to generic hint code for other distros
682 # That's far from ideal
, specially
for LaTeX dependencies
.
685 "sphinx-build" => "sphinx"
687 check_missing_tex
(2) if ($pdf);
688 check_missing
(\
%map);
689 print "I don't know distro $system_release.\n";
690 print "So, I can't provide you a hint with the install procedure.\n";
691 print "There are likely missing dependencies.\n";
695 # Common dependencies
698 sub deactivate_help
()
700 printf "\nIf you want to exit the virtualenv, you can use:\n";
701 printf "\tdeactivate\n";
707 my $min_activate = "$ENV{'PWD'}/${virtenv_prefix}${min_version}/bin/activate";
708 my @activates = glob "$ENV{'PWD'}/${virtenv_prefix}*/bin/activate";
710 @activates = sort {$b cmp $a} @activates;
712 foreach my $f (@activates) {
713 next if ($f lt $min_activate);
716 $sphinx_cmd =~ s/activate/sphinx-build/;
717 next if (! -f
$sphinx_cmd);
719 my $ver = get_sphinx_version
($sphinx_cmd);
720 if ($need_sphinx && ($ver ge $min_version)) {
722 } elsif ($ver gt $cur_version) {
729 sub recommend_sphinx_upgrade
()
733 # Avoid running sphinx-builds from venv if $cur_version is good
734 if ($cur_version && ($cur_version ge $rec_version)) {
735 $latest_avail_ver = $cur_version;
739 # Get the highest version from sphinx_*/bin/sphinx-build and the
740 # corresponding command to activate the venv/virtenv
741 $activate_cmd = get_virtenv
();
743 # Store the highest version from Sphinx existing virtualenvs
744 if (($activate_cmd ne "") && ($venv_ver gt $cur_version)) {
745 $latest_avail_ver = $venv_ver;
747 $latest_avail_ver = $cur_version if ($cur_version);
750 # As we don't know package version of Sphinx, and there's no
751 # virtual environments, don't check if upgrades are needed
753 return if (!$latest_avail_ver);
756 # Either there are already a virtual env or a new one should be created
759 # Return if the reason is due to an upgrade or not
760 if ($latest_avail_ver lt $rec_version) {
761 $rec_sphinx_upgrade = 1;
766 # The logic here is complex, as it have to deal with different versions:
767 # - minimal supported version;
768 # - minimal PDF version;
769 # - recommended version.
770 # It also needs to work fine with both distro's package and venv/virtualenv
771 sub recommend_sphinx_version
($)
773 my $virtualenv_cmd = shift;
775 if ($latest_avail_ver lt $min_pdf_version) {
776 print "note: If you want pdf, you need at least Sphinx $min_pdf_version.\n";
779 # Version is OK. Nothing to do.
780 return if ($cur_version && ($cur_version ge $rec_version));
783 # sphinx-build is present and its version is >= $min_version
785 #only recommend enabling a newer virtenv version if makes sense.
786 if ($latest_avail_ver gt $cur_version) {
787 printf "\nYou may also use the newer Sphinx version $latest_avail_ver with:\n";
788 printf "\tdeactivate\n" if ($ENV{'PWD'} =~ /${virtenv_prefix}/);
789 printf "\t. $activate_cmd\n";
794 return if ($latest_avail_ver ge $rec_version);
798 # No sphinx either via package or via virtenv. As we can't
799 # Compare the versions here, just return, recommending the
800 # user to install it from the package distro.
801 return if (!$latest_avail_ver);
803 # User doesn't want a virtenv recommendation, but he already
804 # installed one via virtenv with a newer version.
805 # So, print commands to enable it
806 if ($latest_avail_ver gt $cur_version) {
807 printf "\nYou may also use the Sphinx virtualenv version $latest_avail_ver with:\n";
808 printf "\tdeactivate\n" if ($ENV{'PWD'} =~ /${virtenv_prefix}/);
809 printf "\t. $activate_cmd\n";
816 $need++ if ($need_sphinx);
819 # Suggest newer versions if current ones are too old
820 if ($latest_avail_ver && $cur_version ge $min_version) {
821 # If there's a good enough version, ask the user to enable it
822 if ($latest_avail_ver ge $rec_version) {
823 printf "\nNeed to activate Sphinx (version $latest_avail_ver) on virtualenv with:\n";
824 printf "\t. $activate_cmd\n";
830 # Version is above the minimal required one, but may be
831 # below the recommended one. So, print warnings/notes
833 if ($latest_avail_ver lt $rec_version) {
834 print "Warning: It is recommended at least Sphinx version $rec_version.\n";
838 # At this point, either it needs Sphinx or upgrade is recommended,
841 if ($rec_sphinx_upgrade) {
843 print "Instead of install/upgrade Python Sphinx pkg, you could use pip/pypi with:\n\n";
845 print "To upgrade Sphinx, use:\n\n";
848 print "Sphinx needs to be installed either as a package or via pip/pypi with:\n";
851 $python_cmd = find_python_no_venv
();
853 printf "\t$virtualenv_cmd $virtenv_dir\n";
855 printf "\t. $virtenv_dir/bin/activate\n";
856 printf "\tpip install -r $requirement_file\n";
862 # Check if Sphinx is already accessible from current environment
865 if ($system_release) {
866 print "Detected OS: $system_release.\n";
868 print "Unknown OS\n";
870 printf "Sphinx version: %s\n\n", $cur_version if ($cur_version);
872 # Check python command line, trying first python3
873 $python_cmd = findprog
("python3");
874 $python_cmd = check_program
("python", 0) if (!$python_cmd);
876 # Check the type of virtual env, depending on Python version
879 my $tmp = qx($python_cmd --version 2>&1);
880 if ($tmp =~ m/(\d+\.)(\d+\.)/) {
882 # Fail if it finds python2 (or worse)
883 die "Python 3 is required to build the kernel docs\n";
885 if ($1 == 3 && $2 < 3) {
886 # Need Python 3.3 or upper for venv
887 $need_virtualenv = 1;
890 die "Warning: couldn't identify $python_cmd version!";
893 add_package
("python-sphinx", 0);
897 recommend_sphinx_upgrade
();
902 # Set virtualenv command line, if python < 3.3
903 if ($need_virtualenv) {
904 $virtualenv_cmd = findprog
("virtualenv-3");
905 $virtualenv_cmd = findprog
("virtualenv-3.5") if (!$virtualenv_cmd);
906 if (!$virtualenv_cmd) {
907 check_program
("virtualenv", 0);
908 $virtualenv_cmd = "virtualenv";
911 $virtualenv_cmd = "$python_cmd -m venv";
912 check_python_module
("ensurepip", 0);
916 # Check for needed programs/tools
917 check_perl_module
("Pod::Usage", 0);
918 check_program
("make", 0);
919 check_program
("gcc", 0);
920 check_python_module
("sphinx_rtd_theme", 1) if (!$virtualenv);
921 check_program
("dot", 1);
922 check_program
("convert", 1);
924 # Extra PDF files - should use 2 for is_optional
925 check_program
("xelatex", 2) if ($pdf);
926 check_program
("rsvg-convert", 2) if ($pdf);
927 check_program
("latexmk", 2) if ($pdf);
929 # Do distro-specific checks and output distro-install commands
934 die "Can't build as $need mandatory dependency is missing";
936 die "Can't build as $need mandatory dependencies are missing";
940 # Check if sphinx-build is called sphinx-build-3
942 printf "\tsudo ln -sf %s /usr/bin/sphinx-build\n\n",
943 which
("sphinx-build-3");
946 recommend_sphinx_version
($virtualenv_cmd);
949 print "All optional dependencies are met.\n" if (!$optional);
952 die "Can't build as $need mandatory dependency is missing";
954 die "Can't build as $need mandatory dependencies are missing";
957 print "Needed package dependencies are met.\n";
965 my $arg = shift(@ARGV);
967 if ($arg eq "--no-virtualenv") {
969 } elsif ($arg eq "--no-pdf"){
971 } elsif ($arg eq "--version-check"){
974 print "Usage:\n\t$0 <--no-virtualenv> <--no-pdf> <--version-check>\n\n";
976 print "\t--no-virtualenv\t- Recommend installing Sphinx instead of using a virtualenv\n";
977 print "\t--version-check\t- if version is compatible, don't check for missing dependencies\n";
978 print "\t--no-pdf\t- don't check for dependencies required to build PDF docs\n\n";
984 # Determine the system type. There's no standard unique way that would
985 # work with all distros with a minimal package install. So, several
986 # methods are used here.
988 # By default, it will use lsb_release function. If not available, it will
989 # fail back to reading the known different places where the distro name
993 $system_release = qx(lsb_release -d) if which
("lsb_release");
994 $system_release =~ s/Description:\s*// if ($system_release);
995 $system_release = catcheck
("/etc/system-release") if !$system_release;
996 $system_release = catcheck
("/etc/redhat-release") if !$system_release;
997 $system_release = catcheck
("/etc/lsb-release") if !$system_release;
998 $system_release = catcheck
("/etc/gentoo-release") if !$system_release;
1000 # This seems more common than LSB these days
1001 if (!$system_release) {
1003 if (open IN
, "cat /etc/os-release|") {
1005 if (m/^([\w\d\_]+)=\"?([^\"]*)\"?\n/) {
1009 $system_release = $os_var{"NAME"};
1010 if (defined($os_var{"VERSION_ID"})) {
1011 $system_release .= " " . $os_var{"VERSION_ID"} if (defined($os_var{"VERSION_ID"}));
1013 $system_release .= " " . $os_var{"VERSION"};
1017 $system_release = catcheck
("/etc/issue") if !$system_release;
1018 $system_release =~ s/\s+$//;