Build HTML versions of the man pages

And install them in the same directory as the API reference, so it's
possible to link them.

Fixes: #2896

docs/reference/gio/meson.build

@@ -1,8 +1,17 @@
+gio_manpages = [
+  'gapplication',
+  'gdbus-codegen',
+  'gdbus',
+  'gio-querymodules',
+  'gio',
+  'glib-compile-resources',
+  'glib-compile-schemas',
+  'gresource',
+  'gsettings',
+]
+
 if get_option('man-pages').enabled()
-  manpages = ['gapplication', 'gio-querymodules', 'glib-compile-schemas',
+  foreach page: gio_manpages
-              'glib-compile-resources', 'gsettings', 'gresource', 'gdbus',
-              'gio', 'gdbus-codegen']
-  foreach page : manpages
     custom_target(page + '-man',
       input: page + '.rst',
       output: page + '.1',
@@ -19,6 +28,25 @@ if get_option('man-pages').enabled()
   endforeach
 endif
 
+if get_option('documentation')
+  man_html_path = docs_dir / 'gio-2.0'
+
+  foreach page: gio_manpages
+    custom_target(
+      input: page + '.rst',
+      output: page + '.html',
+      command: [
+        rst2html5,
+        '@INPUT@',
+      ],
+      capture: true,
+      install: true,
+      install_dir: man_html_path,
+      install_tag: 'doc',
+    )
+  endforeach
+endif
+
 if get_option('documentation') and enable_gir
   expand_content_files = [
     'dbus-error.md',

docs/reference/glib/meson.build

@@ -1,7 +1,7 @@
+glib_manpages = ['glib-gettextize', 'gtester', 'gtester-report']
 
 if get_option('man-pages').enabled()
-  manpages = ['glib-gettextize', 'gtester', 'gtester-report']
+  foreach page: glib_manpages
-  foreach page : manpages
     custom_target(page + '-man',
       input: page + '.rst',
       output: page + '.1',
@@ -20,10 +20,8 @@ endif
 
 if get_option('documentation')
   # GVariant specification is currently standalone
-  rst2html5 = find_program('rst2html5', 'rst2html5.py', required: false)
-
-  if rst2html5.found()
   spec_path = docs_dir / 'glib-2.0'
+  man_html_path = docs_dir / 'glib-2.0'
 
   figures = files(
     'gvariant-byte-boundaries.svg',
@@ -50,7 +48,21 @@ if get_option('documentation')
     install_dir: spec_path,
     install_tag: 'doc',
   )
-  endif
+
+  foreach page: glib_manpages
+    custom_target(
+      input: page + '.rst',
+      output: page + '.html',
+      command: [
+        rst2html5,
+        '@INPUT@',
+      ],
+      capture: true,
+      install: true,
+      install_dir: man_html_path,
+      install_tag: 'doc',
+    )
+  endforeach
 endif
 
 if get_option('documentation') and enable_gir

docs/reference/gobject/meson.build

@@ -1,6 +1,7 @@
+gobject_manpages = ['glib-mkenums', 'glib-genmarshal', 'gobject-query']
+
 if get_option('man-pages').enabled()
-  manpages = ['glib-mkenums', 'glib-genmarshal', 'gobject-query']
+  foreach page: gobject_manpages
-  foreach page : manpages
     custom_target(page + '-man',
       input: page + '.rst',
       output: page + '.1',
@@ -17,6 +18,25 @@ if get_option('man-pages').enabled()
   endforeach
 endif
 
+if get_option('documentation')
+  man_html_path = docs_dir / 'gobject-2.0'
+
+  foreach page: gobject_manpages
+    custom_target(
+      input: page + '.rst',
+      output: page + '.html',
+      command: [
+        rst2html5,
+        '@INPUT@',
+      ],
+      capture: true,
+      install: true,
+      install_dir: man_html_path,
+      install_tag: 'doc',
+    )
+  endforeach
+endif
+
 if get_option('documentation') and enable_gir
   expand_content_files = [
     'boxed.md',

meson.build

@@ -2648,9 +2648,11 @@ if rst2man.found()
   rst2man_flags = [
     '--syntax-highlight=none',
   ]
-  man1_dir = join_paths(glib_prefix, get_option('mandir'), 'man1')
+  man1_dir = glib_prefix / get_option('mandir') / 'man1'
 endif
 
+rst2html5 = find_program('rst2html5', 'rst2html5.py', required: get_option('documentation'))
+
 gnome = import('gnome')
 subdir('docs/reference')