Loading...
Note: File does not exist in v3.15.
1#!/usr/bin/env perl
2# SPDX-License-Identifier: GPL-2.0-or-later
3use strict;
4
5# Copyright (c) 2017-2020 Mauro Carvalho Chehab <mchehab@kernel.org>
6#
7
8my $prefix = "./";
9$prefix = "$ENV{'srctree'}/" if ($ENV{'srctree'});
10
11my $conf = $prefix . "Documentation/conf.py";
12my $requirement_file = $prefix . "Documentation/sphinx/requirements.txt";
13my $virtenv_prefix = "sphinx_";
14
15#
16# Static vars
17#
18
19my %missing;
20my $system_release;
21my $need = 0;
22my $optional = 0;
23my $need_symlink = 0;
24my $need_sphinx = 0;
25my $need_pip = 0;
26my $need_virtualenv = 0;
27my $rec_sphinx_upgrade = 0;
28my $verbose_warn_install = 1;
29my $install = "";
30my $virtenv_dir = "";
31my $python_cmd = "";
32my $activate_cmd;
33my $min_version;
34my $cur_version;
35my $rec_version = "3.4.3";
36my $latest_avail_ver;
37
38#
39# Command line arguments
40#
41
42my $pdf = 1;
43my $virtualenv = 1;
44my $version_check = 0;
45
46#
47# List of required texlive packages on Fedora and OpenSuse
48#
49
50my %texlive = (
51 'amsfonts.sty' => 'texlive-amsfonts',
52 'amsmath.sty' => 'texlive-amsmath',
53 'amssymb.sty' => 'texlive-amsfonts',
54 'amsthm.sty' => 'texlive-amscls',
55 'anyfontsize.sty' => 'texlive-anyfontsize',
56 'atbegshi.sty' => 'texlive-oberdiek',
57 'bm.sty' => 'texlive-tools',
58 'capt-of.sty' => 'texlive-capt-of',
59 'cmap.sty' => 'texlive-cmap',
60 'ecrm1000.tfm' => 'texlive-ec',
61 'eqparbox.sty' => 'texlive-eqparbox',
62 'eu1enc.def' => 'texlive-euenc',
63 'fancybox.sty' => 'texlive-fancybox',
64 'fancyvrb.sty' => 'texlive-fancyvrb',
65 'float.sty' => 'texlive-float',
66 'fncychap.sty' => 'texlive-fncychap',
67 'footnote.sty' => 'texlive-mdwtools',
68 'framed.sty' => 'texlive-framed',
69 'luatex85.sty' => 'texlive-luatex85',
70 'multirow.sty' => 'texlive-multirow',
71 'needspace.sty' => 'texlive-needspace',
72 'palatino.sty' => 'texlive-psnfss',
73 'parskip.sty' => 'texlive-parskip',
74 'polyglossia.sty' => 'texlive-polyglossia',
75 'tabulary.sty' => 'texlive-tabulary',
76 'threeparttable.sty' => 'texlive-threeparttable',
77 'titlesec.sty' => 'texlive-titlesec',
78 'ucs.sty' => 'texlive-ucs',
79 'upquote.sty' => 'texlive-upquote',
80 'wrapfig.sty' => 'texlive-wrapfig',
81 'ctexhook.sty' => 'texlive-ctex',
82);
83
84#
85# Subroutines that checks if a feature exists
86#
87
88sub check_missing(%)
89{
90 my %map = %{$_[0]};
91
92 foreach my $prog (sort keys %missing) {
93 my $is_optional = $missing{$prog};
94
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.
98 #
99 # So, we need to ignore the packages that distros would
100 # need for LaTeX to work
101 if ($is_optional == 2 && !$pdf) {
102 $optional--;
103 next;
104 }
105
106 if ($verbose_warn_install) {
107 if ($is_optional) {
108 print "Warning: better to also install \"$prog\".\n";
109 } else {
110 print "ERROR: please install \"$prog\", otherwise, build won't work.\n";
111 }
112 }
113 if (defined($map{$prog})) {
114 $install .= " " . $map{$prog};
115 } else {
116 $install .= " " . $prog;
117 }
118 }
119
120 $install =~ s/^\s//;
121}
122
123sub add_package($$)
124{
125 my $package = shift;
126 my $is_optional = shift;
127
128 $missing{$package} = $is_optional;
129 if ($is_optional) {
130 $optional++;
131 } else {
132 $need++;
133 }
134}
135
136sub check_missing_file($$$)
137{
138 my $files = shift;
139 my $package = shift;
140 my $is_optional = shift;
141
142 for (@$files) {
143 return if(-e $_);
144 }
145
146 add_package($package, $is_optional);
147}
148
149sub findprog($)
150{
151 foreach(split(/:/, $ENV{PATH})) {
152 return "$_/$_[0]" if(-x "$_/$_[0]");
153 }
154}
155
156sub find_python_no_venv()
157{
158 my $prog = shift;
159
160 my $cur_dir = qx(pwd);
161 $cur_dir =~ s/\s+$//;
162
163 foreach my $dir (split(/:/, $ENV{PATH})) {
164 next if ($dir =~ m,($cur_dir)/sphinx,);
165 return "$dir/python3" if(-x "$dir/python3");
166 }
167 foreach my $dir (split(/:/, $ENV{PATH})) {
168 next if ($dir =~ m,($cur_dir)/sphinx,);
169 return "$dir/python" if(-x "$dir/python");
170 }
171 return "python";
172}
173
174sub check_program($$)
175{
176 my $prog = shift;
177 my $is_optional = shift;
178
179 return $prog if findprog($prog);
180
181 add_package($prog, $is_optional);
182}
183
184sub check_perl_module($$)
185{
186 my $prog = shift;
187 my $is_optional = shift;
188
189 my $err = system("perl -M$prog -e 1 2>/dev/null /dev/null");
190 return if ($err == 0);
191
192 add_package($prog, $is_optional);
193}
194
195sub check_python_module($$)
196{
197 my $prog = shift;
198 my $is_optional = shift;
199
200 return if (!$python_cmd);
201
202 my $err = system("$python_cmd -c 'import $prog' 2>/dev/null /dev/null");
203 return if ($err == 0);
204
205 add_package($prog, $is_optional);
206}
207
208sub check_rpm_missing($$)
209{
210 my @pkgs = @{$_[0]};
211 my $is_optional = $_[1];
212
213 foreach my $prog(@pkgs) {
214 my $err = system("rpm -q '$prog' 2>/dev/null >/dev/null");
215 add_package($prog, $is_optional) if ($err);
216 }
217}
218
219sub check_pacman_missing($$)
220{
221 my @pkgs = @{$_[0]};
222 my $is_optional = $_[1];
223
224 foreach my $prog(@pkgs) {
225 my $err = system("pacman -Q '$prog' 2>/dev/null >/dev/null");
226 add_package($prog, $is_optional) if ($err);
227 }
228}
229
230sub check_missing_tex($)
231{
232 my $is_optional = shift;
233 my $kpsewhich = findprog("kpsewhich");
234
235 foreach my $prog(keys %texlive) {
236 my $package = $texlive{$prog};
237 if (!$kpsewhich) {
238 add_package($package, $is_optional);
239 next;
240 }
241 my $file = qx($kpsewhich $prog);
242 add_package($package, $is_optional) if ($file =~ /^\s*$/);
243 }
244}
245
246sub get_sphinx_fname()
247{
248 my $fname = "sphinx-build";
249 return $fname if findprog($fname);
250
251 $fname = "sphinx-build-3";
252 if (findprog($fname)) {
253 $need_symlink = 1;
254 return $fname;
255 }
256
257 return "";
258}
259
260sub get_sphinx_version($)
261{
262 my $cmd = shift;
263 my $ver;
264
265 open IN, "$cmd --version 2>&1 |";
266 while (<IN>) {
267 if (m/^\s*sphinx-build\s+([\d\.]+)((\+\/[\da-f]+)|(b\d+))?$/) {
268 $ver=$1;
269 last;
270 }
271 # Sphinx 1.2.x uses a different format
272 if (m/^\s*Sphinx.*\s+([\d\.]+)$/) {
273 $ver=$1;
274 last;
275 }
276 }
277 close IN;
278 return $ver;
279}
280
281sub check_sphinx()
282{
283 my $default_version;
284
285 open IN, $conf or die "Can't open $conf";
286 while (<IN>) {
287 if (m/^\s*needs_sphinx\s*=\s*[\'\"]([\d\.]+)[\'\"]/) {
288 $min_version=$1;
289 last;
290 }
291 }
292 close IN;
293
294 die "Can't get needs_sphinx version from $conf" if (!$min_version);
295
296 open IN, $requirement_file or die "Can't open $requirement_file";
297 while (<IN>) {
298 if (m/^\s*Sphinx\s*==\s*([\d\.]+)$/) {
299 $default_version=$1;
300 last;
301 }
302 }
303 close IN;
304
305 die "Can't get default sphinx version from $requirement_file" if (!$default_version);
306
307 $virtenv_dir = $virtenv_prefix . $default_version;
308
309 my $sphinx = get_sphinx_fname();
310 if ($sphinx eq "") {
311 $need_sphinx = 1;
312 return;
313 }
314
315 $cur_version = get_sphinx_version($sphinx);
316 die ("$sphinx returned an error") if (!$cur_version);
317
318 die "$sphinx didn't return its version" if (!$cur_version);
319
320 if ($cur_version lt $min_version) {
321 printf "ERROR: Sphinx version is %s. It should be >= %s (recommended >= %s)\n",
322 $cur_version, $min_version, $default_version;
323 $need_sphinx = 1;
324 return;
325 }
326
327 return if ($cur_version lt $rec_version);
328
329 # On version check mode, just assume Sphinx has all mandatory deps
330 exit (0) if ($version_check);
331}
332
333#
334# Ancillary subroutines
335#
336
337sub catcheck($)
338{
339 my $res = "";
340 $res = qx(cat $_[0]) if (-r $_[0]);
341 return $res;
342}
343
344sub which($)
345{
346 my $file = shift;
347 my @path = split ":", $ENV{PATH};
348
349 foreach my $dir(@path) {
350 my $name = $dir.'/'.$file;
351 return $name if (-x $name );
352 }
353 return undef;
354}
355
356#
357# Subroutines that check distro-specific hints
358#
359
360sub give_debian_hints()
361{
362 my %map = (
363 "python-sphinx" => "python3-sphinx",
364 "ensurepip" => "python3-venv",
365 "virtualenv" => "virtualenv",
366 "dot" => "graphviz",
367 "convert" => "imagemagick",
368 "Pod::Usage" => "perl-modules",
369 "xelatex" => "texlive-xetex",
370 "rsvg-convert" => "librsvg2-bin",
371 );
372
373 if ($pdf) {
374 check_missing_file(["/usr/share/texlive/texmf-dist/tex/latex/ctex/ctexhook.sty"],
375 "texlive-lang-chinese", 2);
376
377 check_missing_file(["/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf"],
378 "fonts-dejavu", 2);
379
380 check_missing_file(["/usr/share/fonts/noto-cjk/NotoSansCJK-Regular.ttc",
381 "/usr/share/fonts/opentype/noto/NotoSansCJK-Regular.ttc",
382 "/usr/share/fonts/opentype/noto/NotoSerifCJK-Regular.ttc"],
383 "fonts-noto-cjk", 2);
384 }
385
386 check_program("dvipng", 2) if ($pdf);
387 check_missing(\%map);
388
389 return if (!$need && !$optional);
390 printf("You should run:\n") if ($verbose_warn_install);
391 printf("\n\tsudo apt-get install $install\n");
392}
393
394sub give_redhat_hints()
395{
396 my %map = (
397 "python-sphinx" => "python3-sphinx",
398 "virtualenv" => "python3-virtualenv",
399 "dot" => "graphviz",
400 "convert" => "ImageMagick",
401 "Pod::Usage" => "perl-Pod-Usage",
402 "xelatex" => "texlive-xetex-bin",
403 "rsvg-convert" => "librsvg2-tools",
404 );
405
406 my @fedora26_opt_pkgs = (
407 "graphviz-gd", # Fedora 26: needed for PDF support
408 );
409
410 my @fedora_tex_pkgs = (
411 "texlive-collection-fontsrecommended",
412 "texlive-collection-latex",
413 "texlive-xecjk",
414 "dejavu-sans-fonts",
415 "dejavu-serif-fonts",
416 "dejavu-sans-mono-fonts",
417 );
418
419 #
420 # Checks valid for RHEL/CentOS version 7.x.
421 #
422 my $old = 0;
423 my $rel;
424 $rel = $1 if ($system_release =~ /release\s+(\d+)/);
425
426 if (!($system_release =~ /Fedora/)) {
427 $map{"virtualenv"} = "python-virtualenv";
428
429 if ($rel && $rel < 8) {
430 $old = 1;
431 $pdf = 0;
432
433 printf("Note: texlive packages on RHEL/CENTOS <= 7 are incomplete. Can't support PDF output\n");
434 printf("If you want to build PDF, please read:\n");
435 printf("\thttps://www.systutorials.com/241660/how-to-install-tex-live-on-centos-7-linux/\n");
436 }
437 } else {
438 if ($rel && $rel < 26) {
439 $old = 1;
440 }
441 }
442 if (!$rel) {
443 printf("Couldn't identify release number\n");
444 $old = 1;
445 $pdf = 0;
446 }
447
448 if ($pdf) {
449 check_missing_file(["/usr/share/fonts/google-noto-cjk/NotoSansCJK-Regular.ttc"],
450 "google-noto-sans-cjk-ttc-fonts", 2);
451 }
452
453 check_rpm_missing(\@fedora26_opt_pkgs, 2) if ($pdf && !$old);
454 check_rpm_missing(\@fedora_tex_pkgs, 2) if ($pdf);
455 check_missing_tex(2) if ($pdf);
456 check_missing(\%map);
457
458 return if (!$need && !$optional);
459
460 if (!$old) {
461 # dnf, for Fedora 18+
462 printf("You should run:\n") if ($verbose_warn_install);
463 printf("\n\tsudo dnf install -y $install\n");
464 } else {
465 # yum, for RHEL (and clones) or Fedora version < 18
466 printf("You should run:\n") if ($verbose_warn_install);
467 printf("\n\tsudo yum install -y $install\n");
468 }
469}
470
471sub give_opensuse_hints()
472{
473 my %map = (
474 "python-sphinx" => "python3-sphinx",
475 "virtualenv" => "python3-virtualenv",
476 "dot" => "graphviz",
477 "convert" => "ImageMagick",
478 "Pod::Usage" => "perl-Pod-Usage",
479 "xelatex" => "texlive-xetex-bin",
480 );
481
482 # On Tumbleweed, this package is also named rsvg-convert
483 $map{"rsvg-convert"} = "rsvg-view" if (!($system_release =~ /Tumbleweed/));
484
485 my @suse_tex_pkgs = (
486 "texlive-babel-english",
487 "texlive-caption",
488 "texlive-colortbl",
489 "texlive-courier",
490 "texlive-dvips",
491 "texlive-helvetic",
492 "texlive-makeindex",
493 "texlive-metafont",
494 "texlive-metapost",
495 "texlive-palatino",
496 "texlive-preview",
497 "texlive-times",
498 "texlive-zapfchan",
499 "texlive-zapfding",
500 );
501
502 $map{"latexmk"} = "texlive-latexmk-bin";
503
504 # FIXME: add support for installing CJK fonts
505 #
506 # I tried hard, but was unable to find a way to install
507 # "Noto Sans CJK SC" on openSUSE
508
509 check_rpm_missing(\@suse_tex_pkgs, 2) if ($pdf);
510 check_missing_tex(2) if ($pdf);
511 check_missing(\%map);
512
513 return if (!$need && !$optional);
514 printf("You should run:\n") if ($verbose_warn_install);
515 printf("\n\tsudo zypper install --no-recommends $install\n");
516}
517
518sub give_mageia_hints()
519{
520 my %map = (
521 "python-sphinx" => "python3-sphinx",
522 "virtualenv" => "python3-virtualenv",
523 "dot" => "graphviz",
524 "convert" => "ImageMagick",
525 "Pod::Usage" => "perl-Pod-Usage",
526 "xelatex" => "texlive",
527 "rsvg-convert" => "librsvg2",
528 );
529
530 my @tex_pkgs = (
531 "texlive-fontsextra",
532 );
533
534 $map{"latexmk"} = "texlive-collection-basic";
535
536 my $packager_cmd;
537 my $noto_sans;
538 if ($system_release =~ /OpenMandriva/) {
539 $packager_cmd = "dnf install";
540 $noto_sans = "noto-sans-cjk-fonts";
541 @tex_pkgs = ( "texlive-collection-fontsextra" );
542 } else {
543 $packager_cmd = "urpmi";
544 $noto_sans = "google-noto-sans-cjk-ttc-fonts";
545 }
546
547
548 if ($pdf) {
549 check_missing_file(["/usr/share/fonts/google-noto-cjk/NotoSansCJK-Regular.ttc",
550 "/usr/share/fonts/TTF/NotoSans-Regular.ttf"],
551 $noto_sans, 2);
552 }
553
554 check_rpm_missing(\@tex_pkgs, 2) if ($pdf);
555 check_missing(\%map);
556
557 return if (!$need && !$optional);
558 printf("You should run:\n") if ($verbose_warn_install);
559 printf("\n\tsudo $packager_cmd $install\n");
560}
561
562sub give_arch_linux_hints()
563{
564 my %map = (
565 "virtualenv" => "python-virtualenv",
566 "dot" => "graphviz",
567 "convert" => "imagemagick",
568 "xelatex" => "texlive-bin",
569 "latexmk" => "texlive-core",
570 "rsvg-convert" => "extra/librsvg",
571 );
572
573 my @archlinux_tex_pkgs = (
574 "texlive-core",
575 "texlive-latexextra",
576 "ttf-dejavu",
577 );
578 check_pacman_missing(\@archlinux_tex_pkgs, 2) if ($pdf);
579
580 if ($pdf) {
581 check_missing_file(["/usr/share/fonts/noto-cjk/NotoSansCJK-Regular.ttc"],
582 "noto-fonts-cjk", 2);
583 }
584
585 check_missing(\%map);
586
587 return if (!$need && !$optional);
588 printf("You should run:\n") if ($verbose_warn_install);
589 printf("\n\tsudo pacman -S $install\n");
590}
591
592sub give_gentoo_hints()
593{
594 my %map = (
595 "virtualenv" => "dev-python/virtualenv",
596 "dot" => "media-gfx/graphviz",
597 "convert" => "media-gfx/imagemagick",
598 "xelatex" => "dev-texlive/texlive-xetex media-fonts/dejavu",
599 "rsvg-convert" => "gnome-base/librsvg",
600 );
601
602 check_missing_file(["/usr/share/fonts/dejavu/DejaVuSans.ttf"],
603 "media-fonts/dejavu", 2) if ($pdf);
604
605 if ($pdf) {
606 check_missing_file(["/usr/share/fonts/noto-cjk/NotoSansCJKsc-Regular.otf",
607 "/usr/share/fonts/noto-cjk/NotoSerifCJK-Regular.ttc"],
608 "media-fonts/noto-cjk", 2);
609 }
610
611 check_missing(\%map);
612
613 return if (!$need && !$optional);
614
615 printf("You should run:\n") if ($verbose_warn_install);
616 printf("\n");
617
618 my $imagemagick = "media-gfx/imagemagick svg png";
619 my $cairo = "media-gfx/graphviz cairo pdf";
620 my $portage_imagemagick = "/etc/portage/package.use/imagemagick";
621 my $portage_cairo = "/etc/portage/package.use/graphviz";
622
623 if (qx(grep imagemagick $portage_imagemagick 2>/dev/null) eq "") {
624 printf("\tsudo su -c 'echo \"$imagemagick\" > $portage_imagemagick'\n")
625 }
626 if (qx(grep graphviz $portage_cairo 2>/dev/null) eq "") {
627 printf("\tsudo su -c 'echo \"$cairo\" > $portage_cairo'\n");
628 }
629
630 printf("\tsudo emerge --ask $install\n");
631
632}
633
634sub check_distros()
635{
636 # Distro-specific hints
637 if ($system_release =~ /Red Hat Enterprise Linux/) {
638 give_redhat_hints;
639 return;
640 }
641 if ($system_release =~ /CentOS/) {
642 give_redhat_hints;
643 return;
644 }
645 if ($system_release =~ /Scientific Linux/) {
646 give_redhat_hints;
647 return;
648 }
649 if ($system_release =~ /Oracle Linux Server/) {
650 give_redhat_hints;
651 return;
652 }
653 if ($system_release =~ /Fedora/) {
654 give_redhat_hints;
655 return;
656 }
657 if ($system_release =~ /Ubuntu/) {
658 give_debian_hints;
659 return;
660 }
661 if ($system_release =~ /Debian/) {
662 give_debian_hints;
663 return;
664 }
665 if ($system_release =~ /openSUSE/) {
666 give_opensuse_hints;
667 return;
668 }
669 if ($system_release =~ /Mageia/) {
670 give_mageia_hints;
671 return;
672 }
673 if ($system_release =~ /OpenMandriva/) {
674 give_mageia_hints;
675 return;
676 }
677 if ($system_release =~ /Arch Linux/) {
678 give_arch_linux_hints;
679 return;
680 }
681 if ($system_release =~ /Gentoo/) {
682 give_gentoo_hints;
683 return;
684 }
685
686 #
687 # Fall-back to generic hint code for other distros
688 # That's far from ideal, specially for LaTeX dependencies.
689 #
690 my %map = (
691 "sphinx-build" => "sphinx"
692 );
693 check_missing_tex(2) if ($pdf);
694 check_missing(\%map);
695 print "I don't know distro $system_release.\n";
696 print "So, I can't provide you a hint with the install procedure.\n";
697 print "There are likely missing dependencies.\n";
698}
699
700#
701# Common dependencies
702#
703
704sub deactivate_help()
705{
706 printf "\n If you want to exit the virtualenv, you can use:\n";
707 printf "\tdeactivate\n";
708}
709
710sub get_virtenv()
711{
712 my $ver;
713 my $min_activate = "$ENV{'PWD'}/${virtenv_prefix}${min_version}/bin/activate";
714 my @activates = glob "$ENV{'PWD'}/${virtenv_prefix}*/bin/activate";
715
716 @activates = sort {$b cmp $a} @activates;
717
718 foreach my $f (@activates) {
719 next if ($f lt $min_activate);
720
721 my $sphinx_cmd = $f;
722 $sphinx_cmd =~ s/activate/sphinx-build/;
723 next if (! -f $sphinx_cmd);
724
725 my $ver = get_sphinx_version($sphinx_cmd);
726
727 if (!$ver) {
728 $f =~ s#/bin/activate##;
729 print("Warning: virtual environment $f is not working.\nPython version upgrade? Remove it with:\n\n\trm -rf $f\n\n");
730 }
731
732 if ($need_sphinx && ($ver ge $min_version)) {
733 return ($f, $ver);
734 } elsif ($ver gt $cur_version) {
735 return ($f, $ver);
736 }
737 }
738 return ("", "");
739}
740
741sub recommend_sphinx_upgrade()
742{
743 my $venv_ver;
744
745 # Avoid running sphinx-builds from venv if $cur_version is good
746 if ($cur_version && ($cur_version ge $rec_version)) {
747 $latest_avail_ver = $cur_version;
748 return;
749 }
750
751 # Get the highest version from sphinx_*/bin/sphinx-build and the
752 # corresponding command to activate the venv/virtenv
753 ($activate_cmd, $venv_ver) = get_virtenv();
754
755 # Store the highest version from Sphinx existing virtualenvs
756 if (($activate_cmd ne "") && ($venv_ver gt $cur_version)) {
757 $latest_avail_ver = $venv_ver;
758 } else {
759 $latest_avail_ver = $cur_version if ($cur_version);
760 }
761
762 # As we don't know package version of Sphinx, and there's no
763 # virtual environments, don't check if upgrades are needed
764 if (!$virtualenv) {
765 return if (!$latest_avail_ver);
766 }
767
768 # Either there are already a virtual env or a new one should be created
769 $need_pip = 1;
770
771 return if (!$latest_avail_ver);
772
773 # Return if the reason is due to an upgrade or not
774 if ($latest_avail_ver lt $rec_version) {
775 $rec_sphinx_upgrade = 1;
776 }
777
778 return $latest_avail_ver;
779}
780
781#
782# The logic here is complex, as it have to deal with different versions:
783# - minimal supported version;
784# - minimal PDF version;
785# - recommended version.
786# It also needs to work fine with both distro's package and venv/virtualenv
787sub recommend_sphinx_version($)
788{
789 my $virtualenv_cmd = shift;
790
791 # Version is OK. Nothing to do.
792 if ($cur_version && ($cur_version ge $rec_version)) {
793 return;
794 };
795
796 if (!$need_sphinx) {
797 # sphinx-build is present and its version is >= $min_version
798
799 #only recommend enabling a newer virtenv version if makes sense.
800 if ($latest_avail_ver gt $cur_version) {
801 printf "\nYou may also use the newer Sphinx version $latest_avail_ver with:\n";
802 printf "\tdeactivate\n" if ($ENV{'PWD'} =~ /${virtenv_prefix}/);
803 printf "\t. $activate_cmd\n";
804 deactivate_help();
805
806 return;
807 }
808 return if ($latest_avail_ver ge $rec_version);
809 }
810
811 if (!$virtualenv) {
812 # No sphinx either via package or via virtenv. As we can't
813 # Compare the versions here, just return, recommending the
814 # user to install it from the package distro.
815 return if (!$latest_avail_ver);
816
817 # User doesn't want a virtenv recommendation, but he already
818 # installed one via virtenv with a newer version.
819 # So, print commands to enable it
820 if ($latest_avail_ver gt $cur_version) {
821 printf "\nYou may also use the Sphinx virtualenv version $latest_avail_ver with:\n";
822 printf "\tdeactivate\n" if ($ENV{'PWD'} =~ /${virtenv_prefix}/);
823 printf "\t. $activate_cmd\n";
824 deactivate_help();
825
826 return;
827 }
828 print "\n";
829 } else {
830 $need++ if ($need_sphinx);
831 }
832
833 # Suggest newer versions if current ones are too old
834 if ($latest_avail_ver && $latest_avail_ver ge $min_version) {
835 # If there's a good enough version, ask the user to enable it
836 if ($latest_avail_ver ge $rec_version) {
837 printf "\nNeed to activate Sphinx (version $latest_avail_ver) on virtualenv with:\n";
838 printf "\t. $activate_cmd\n";
839 deactivate_help();
840
841 return;
842 }
843
844 # Version is above the minimal required one, but may be
845 # below the recommended one. So, print warnings/notes
846
847 if ($latest_avail_ver lt $rec_version) {
848 print "Warning: It is recommended at least Sphinx version $rec_version.\n";
849 }
850 }
851
852 # At this point, either it needs Sphinx or upgrade is recommended,
853 # both via pip
854
855 if ($rec_sphinx_upgrade) {
856 if (!$virtualenv) {
857 print "Instead of install/upgrade Python Sphinx pkg, you could use pip/pypi with:\n\n";
858 } else {
859 print "To upgrade Sphinx, use:\n\n";
860 }
861 } else {
862 print "\nSphinx needs to be installed either:\n1) via pip/pypi with:\n\n";
863 }
864
865 $python_cmd = find_python_no_venv();
866
867 printf "\t$virtualenv_cmd $virtenv_dir\n";
868
869 printf "\t. $virtenv_dir/bin/activate\n";
870 printf "\tpip install -r $requirement_file\n";
871 deactivate_help();
872
873 printf "\n2) As a package with:\n";
874
875 my $old_need = $need;
876 my $old_optional = $optional;
877 %missing = ();
878 $pdf = 0;
879 $optional = 0;
880 $install = "";
881 $verbose_warn_install = 0;
882
883 add_package("python-sphinx", 0);
884
885 check_distros();
886
887 $need = $old_need;
888 $optional = $old_optional;
889
890 printf "\n Please note that Sphinx >= 3.0 will currently produce false-positive\n";
891 printf " warning when the same name is used for more than one type (functions,\n";
892 printf " structs, enums,...). This is known Sphinx bug. For more details, see:\n";
893 printf "\thttps://github.com/sphinx-doc/sphinx/pull/8313\n";
894}
895
896sub check_needs()
897{
898 # Check if Sphinx is already accessible from current environment
899 check_sphinx();
900
901 if ($system_release) {
902 print "Detected OS: $system_release.\n";
903 } else {
904 print "Unknown OS\n";
905 }
906 printf "Sphinx version: %s\n\n", $cur_version if ($cur_version);
907
908 # Check python command line, trying first python3
909 $python_cmd = findprog("python3");
910 $python_cmd = check_program("python", 0) if (!$python_cmd);
911
912 # Check the type of virtual env, depending on Python version
913 if ($python_cmd) {
914 if ($virtualenv) {
915 my $tmp = qx($python_cmd --version 2>&1);
916 if ($tmp =~ m/(\d+\.)(\d+\.)/) {
917 if ($1 < 3) {
918 # Fail if it finds python2 (or worse)
919 die "Python 3 is required to build the kernel docs\n";
920 }
921 if ($1 == 3 && $2 < 3) {
922 # Need Python 3.3 or upper for venv
923 $need_virtualenv = 1;
924 }
925 } else {
926 die "Warning: couldn't identify $python_cmd version!";
927 }
928 } else {
929 add_package("python-sphinx", 0);
930 }
931 }
932
933 my $venv_ver = recommend_sphinx_upgrade();
934
935 my $virtualenv_cmd;
936
937 if ($need_pip) {
938 # Set virtualenv command line, if python < 3.3
939 if ($need_virtualenv) {
940 $virtualenv_cmd = findprog("virtualenv-3");
941 $virtualenv_cmd = findprog("virtualenv-3.5") if (!$virtualenv_cmd);
942 if (!$virtualenv_cmd) {
943 check_program("virtualenv", 0);
944 $virtualenv_cmd = "virtualenv";
945 }
946 } else {
947 $virtualenv_cmd = "$python_cmd -m venv";
948 check_python_module("ensurepip", 0);
949 }
950 }
951
952 # Check for needed programs/tools
953 check_perl_module("Pod::Usage", 0);
954 check_program("make", 0);
955 check_program("gcc", 0);
956 check_program("dot", 1);
957 check_program("convert", 1);
958
959 # Extra PDF files - should use 2 for is_optional
960 check_program("xelatex", 2) if ($pdf);
961 check_program("rsvg-convert", 2) if ($pdf);
962 check_program("latexmk", 2) if ($pdf);
963
964 # Do distro-specific checks and output distro-install commands
965 check_distros();
966
967 if (!$python_cmd) {
968 if ($need == 1) {
969 die "Can't build as $need mandatory dependency is missing";
970 } elsif ($need) {
971 die "Can't build as $need mandatory dependencies are missing";
972 }
973 }
974
975 # Check if sphinx-build is called sphinx-build-3
976 if ($need_symlink) {
977 printf "\tsudo ln -sf %s /usr/bin/sphinx-build\n\n",
978 which("sphinx-build-3");
979 }
980
981 recommend_sphinx_version($virtualenv_cmd);
982 printf "\n";
983
984 print "All optional dependencies are met.\n" if (!$optional);
985
986 if ($need == 1) {
987 die "Can't build as $need mandatory dependency is missing";
988 } elsif ($need) {
989 die "Can't build as $need mandatory dependencies are missing";
990 }
991
992 print "Needed package dependencies are met.\n";
993}
994
995#
996# Main
997#
998
999while (@ARGV) {
1000 my $arg = shift(@ARGV);
1001
1002 if ($arg eq "--no-virtualenv") {
1003 $virtualenv = 0;
1004 } elsif ($arg eq "--no-pdf"){
1005 $pdf = 0;
1006 } elsif ($arg eq "--version-check"){
1007 $version_check = 1;
1008 } else {
1009 print "Usage:\n\t$0 <--no-virtualenv> <--no-pdf> <--version-check>\n\n";
1010 print "Where:\n";
1011 print "\t--no-virtualenv\t- Recommend installing Sphinx instead of using a virtualenv\n";
1012 print "\t--version-check\t- if version is compatible, don't check for missing dependencies\n";
1013 print "\t--no-pdf\t- don't check for dependencies required to build PDF docs\n\n";
1014 exit -1;
1015 }
1016}
1017
1018#
1019# Determine the system type. There's no standard unique way that would
1020# work with all distros with a minimal package install. So, several
1021# methods are used here.
1022#
1023# By default, it will use lsb_release function. If not available, it will
1024# fail back to reading the known different places where the distro name
1025# is stored
1026#
1027
1028$system_release = qx(lsb_release -d) if which("lsb_release");
1029$system_release =~ s/Description:\s*// if ($system_release);
1030$system_release = catcheck("/etc/system-release") if !$system_release;
1031$system_release = catcheck("/etc/redhat-release") if !$system_release;
1032$system_release = catcheck("/etc/lsb-release") if !$system_release;
1033$system_release = catcheck("/etc/gentoo-release") if !$system_release;
1034
1035# This seems more common than LSB these days
1036if (!$system_release) {
1037 my %os_var;
1038 if (open IN, "cat /etc/os-release|") {
1039 while (<IN>) {
1040 if (m/^([\w\d\_]+)=\"?([^\"]*)\"?\n/) {
1041 $os_var{$1}=$2;
1042 }
1043 }
1044 $system_release = $os_var{"NAME"};
1045 if (defined($os_var{"VERSION_ID"})) {
1046 $system_release .= " " . $os_var{"VERSION_ID"} if (defined($os_var{"VERSION_ID"}));
1047 } else {
1048 $system_release .= " " . $os_var{"VERSION"};
1049 }
1050 }
1051}
1052$system_release = catcheck("/etc/issue") if !$system_release;
1053$system_release =~ s/\s+$//;
1054
1055check_needs;