General: Update build system to upstream support of meson+ninja.

Upstream thinks, that the auto tools are too 'legacy', or that they
are at least no longer fitting.

We follow, as the classic auto tools files have been removed, so no
other choice here...

1 files changed, 218 insertions, 0 deletions

diff --git a/man/meson.build b/man/meson.build
new file mode 100644
index 000000000..8fdb512f6
--- /dev/null
+++ b/man/meson.build
@@ -0,0 +1,218 @@
+# 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',
+        '--stringparam', 'man.output.quietly', '1',
+        '--stringparam', 'funcsynopsis.style', 'ansi',
+        '--stringparam', 'man.authors.section.enabled', '0',
+        '--stringparam', 'man.copyright.section.enabled', '0',
+        '--stringparam', 'elogind.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
+
+#if 0 /// UNNEEDED by elogind
+# custom_entities_ent = configure_file(
+#         input : 'custom-entities.ent.in',
+#         output : 'custom-entities.ent',
+#         configuration : conf)
+#endif // 0
+
+man_pages = []
+html_pages = []
+source_xml_files = []
+foreach tuple : 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, false)
+                p1 = custom_target(
+                        man,
+                        input : xml,
+                        output : [man] + manaliases,
+                        command : xslt_cmd + [custom_man_xsl, '@INPUT@'],
+#if 0 /// UNNEEDED by elogind
+#                         depend_files : custom_entities_ent,
+#endif // 0
+                        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@'],
+#if 0 /// UNNEEDED by elogind
+#                         depend_files : custom_entities_ent,
+#endif // 0
+                        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
+
+elogind_directives_xml = custom_target(
+        'elogind.directives.xml',
+        input : source_xml_files,
+        output : 'elogind.directives.xml',
+        command : [make_directive_index_py, '@OUTPUT@'] + source_xml_files)
+
+nonindex_xml_files = source_xml_files + [elogind_directives_xml]
+elogind_index_xml = custom_target(
+        'elogind.index.xml',
+        input : nonindex_xml_files,
+        output : 'elogind.index.xml',
+        command : [make_man_index_py, '@OUTPUT@'] + nonindex_xml_files)
+
+foreach tuple : [['elogind.directives', '7', elogind_directives_xml],
+                 ['elogind.index',      '7', elogind_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 == 'elogind.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@'],
+#if 0 /// UNNEEDED by elogind
+#                 depend_files : custom_entities_ent,
+#endif // 0
+                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 = run_target(
+        'html',
+        depends : html_pages,
+        output : 'html',
+        command : ['echo'])
+
+#if 0 /// UNNEEDED in elogind
+# 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')])
+#endif // 0
+
+############################################################
+
+if git.found()
+        run_target(
+                '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())],
+#if 0 /// UNNEEDED by elogind
+#                 depend_files : custom_entities_ent)
+#else
+                )
+#endif // 0
+endif