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Systemd/man/meson.build
Zbigniew Jędrzejewski-Szmek 559d215b67 meson: restore building of man pages on demand even if -Dman=false 
I want to configure -Dman=false for speed, but be able to build a specific
man page sometimes to check my edits. Commit 5b316b9ea6 broke this by mistake.
Let's adjust the condition to better match the logic of disabling tests only
if xsltproc is really not found.
2017-11-24 14:00:29 +01:00

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# SPDX-License-Identifier: LGPL-2.1+
#
# Copyright 2017 Zbigniew Jędrzejewski-Szmek
#
# systemd is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
#
# systemd is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with systemd; If not, see <http://www.gnu.org/licenses/>.
# This is lame, I know, but meson has no other include mechanism
subdir('rules')
want_man = get_option('man')
want_html = get_option('html')
xsltproc = find_program('xsltproc',
required : want_man == 'true' or want_html == 'true')
want_man = want_man != 'false' and xsltproc.found()
want_html = want_html != 'false' and xsltproc.found()
xsltproc_flags = [
'--nonet',
'--xinclude',
'--maxdepth', '9000',
'--stringparam', 'man.output.quietly', '1',
'--stringparam', 'funcsynopsis.style', 'ansi',
'--stringparam', 'man.authors.section.enabled', '0',
'--stringparam', 'man.copyright.section.enabled', '0',
'--stringparam', 'systemd.version', '@0@'.format(meson.project_version()),
'--path',
'@0@:@1@'.format(meson.current_build_dir(), meson.current_source_dir())]
custom_man_xsl = files('custom-man.xsl')
custom_html_xsl = files('custom-html.xsl')
xslt_cmd = [xsltproc, '-o', '@OUTPUT0@'] + xsltproc_flags
custom_entities_ent = configure_file(
input : 'custom-entities.ent.in',
output : 'custom-entities.ent',
configuration : conf)
man_pages = []
html_pages = []
source_xml_files = []
foreach tuple : xsltproc.found() ? manpages : []
stem = tuple[0]
section = tuple[1]
aliases = tuple[2]
condition = tuple[3]
xml = stem + '.xml'
html = stem + '.html'
man = stem + '.' + section
manaliases = []
htmlaliases = []
foreach alias : aliases
manaliases += [alias + '.' + section]
htmlaliases += [alias + '.html']
endforeach
mandirn = join_paths(get_option('mandir'), 'man' + section)
if condition == '' or conf.get(condition) == 1
p1 = custom_target(
man,
input : xml,
output : [man] + manaliases,
command : xslt_cmd + [custom_man_xsl, '@INPUT@'],
depend_files : custom_entities_ent,
install : want_man,
install_dir : mandirn)
man_pages += [p1]
p2 = []
foreach htmlalias : htmlaliases
link = custom_target(
htmlalias,
input : p2,
output : htmlalias,
command : ['ln', '-fs', html, '@OUTPUT@'])
if want_html
dst = join_paths(docdir, 'html', htmlalias)
cmd = 'ln -fs @0@ $DESTDIR@1@'.format(html, dst)
meson.add_install_script('sh', '-c', cmd)
p2 += [link]
endif
html_pages += [link]
endforeach
p3 = custom_target(
html,
input : xml,
output : html,
command : xslt_cmd + [custom_html_xsl, '@INPUT@'],
depend_files : custom_entities_ent,
depends : p2,
install : want_html,
install_dir : join_paths(docdir, 'html'))
html_pages += [p3]
source_xml_files += files(tuple[0] + '.xml')
else
message('Skipping @0@.@1@ because @2@ is false'.format(stem, section, condition))
endif
endforeach
############################################################
have_lxml = run_command(xml_helper_py).returncode() == 0
if not have_lxml
message('python-lxml not available, not making man page indices')
endif
systemd_directives_xml = custom_target(
'systemd.directives.xml',
input : source_xml_files,
output : 'systemd.directives.xml',
command : [make_directive_index_py, '@OUTPUT@'] + source_xml_files)
nonindex_xml_files = source_xml_files + [systemd_directives_xml]
systemd_index_xml = custom_target(
'systemd.index.xml',
input : nonindex_xml_files,
output : 'systemd.index.xml',
command : [make_man_index_py, '@OUTPUT@'] + nonindex_xml_files)
foreach tuple : want_man or want_html ? [['systemd.directives', '7', systemd_directives_xml],
['systemd.index', '7', systemd_index_xml]] : []
stem = tuple[0]
section = tuple[1]
xml = tuple[2]
html = stem + '.html'
man = stem + '.' + section
mandirn = join_paths(get_option('mandir'), 'man' + section)
p1 = custom_target(
man,
input : xml,
output : man,
command : xslt_cmd + [custom_man_xsl, '@INPUT@'],
install : want_man and have_lxml,
install_dir : mandirn)
man_pages += [p1]
p2 = []
if html == 'systemd.index.html'
htmlalias = 'index.html'
link = custom_target(
htmlalias,
input : p2,
output : htmlalias,
command : ['ln', '-fs', html, '@OUTPUT@'])
if want_html
dst = join_paths(docdir, 'html', htmlalias)
cmd = 'ln -fs @0@ $DESTDIR@1@'.format(html, dst)
meson.add_install_script('sh', '-c', cmd)
p2 += [link]
endif
html_pages += [link]
endif
p3 = custom_target(
html,
input : xml,
output : html,
command : xslt_cmd + [custom_html_xsl, '@INPUT@'],
depend_files : custom_entities_ent,
depends : p2,
install : want_html and have_lxml,
install_dir : join_paths(docdir, 'html'))
html_pages += [p3]
endforeach
# cannot use run_target until https://github.com/mesonbuild/meson/issues/1644 is resolved
man = custom_target(
'man',
output : 'man',
depends : man_pages,
command : ['echo'])
html = custom_target(
'html',
output : 'html',
depends : html_pages,
command : ['echo'])
run_target(
'doc-sync',
depends : man_pages + html_pages,
command : ['rsync', '-rlv',
'--delete-excluded',
'--include=man',
'--include=*.html',
'--exclude=*',
'--omit-dir-times',
meson.current_build_dir(),
get_option('www-target')])
############################################################
if git.found()
custom_target(
'update-man-rules',
output : 'update-man-rules',
# slightly strange syntax because of
# https://github.com/mesonbuild/meson/issues/1643
# and https://github.com/mesonbuild/meson/issues/1512
command : ['sh', '-c',
'cd @0@ && '.format(meson.build_root()) +
'python3 @0@/tools/make-man-rules.py `git ls-files ":/man/*.xml"` >t && '.format(meson.source_root()) +
'mv t @0@/rules/meson.build'.format(meson.current_source_dir())],
depend_files : custom_entities_ent)
endif
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