11 files changed, 132 insertions, 9 deletions
diff --git a/doc/doxy-style.css b/doc/c/doxy-style.css
index b44675e..b44675e 100644
--- a/doc/doxy-style.css
+++ b/doc/c/doxy-style.css
diff --git a/doc/footer.html b/doc/c/footer.html
index 0dc6919..0dc6919 100644
--- a/doc/footer.html
+++ b/doc/c/footer.html
diff --git a/doc/header.html b/doc/c/header.html
index 2e419e3..2e419e3 100644
--- a/doc/header.html
+++ b/doc/c/header.html
diff --git a/doc/layout.xml b/doc/c/layout.xml
index 1f63a76..1f63a76 100644
--- a/doc/layout.xml
+++ b/doc/c/layout.xml
diff --git a/doc/mainpage.md b/doc/c/mainpage.md
index 561bc93..561bc93 100644
--- a/doc/mainpage.md
+++ b/doc/c/mainpage.md
diff --git a/doc/c/meson.build b/doc/c/meson.build
new file mode 100644
index 0000000..3ce7fdc
--- /dev/null
+++ b/doc/c/meson.build
@@ -0,0 +1,41 @@
+# Copyright 2022 David Robillard <d@drobilla.net>
+# SPDX-License-Identifier: CC0-1.0 OR ISC
+
+lv2_source_doc = meson.current_source_dir()
+
+if doxygen.found()
+  reference_doxygen_in = files('reference.doxygen.in')
+
+  config = configuration_data(
+    {
+      'LV2_SRCDIR': lv2_source_root,
+      'LV2_BUILDDIR': lv2_build_root,
+      'LV2_VERSION': meson.project_version(),
+    }
+  )
+
+  reference_doxygen = configure_file(
+    configuration: config,
+    input: reference_doxygen_in,
+    output: 'reference.doxygen',
+  )
+
+  docs = custom_target(
+    'html',
+    command: [doxygen, '@INPUT@'],
+    input: reference_doxygen,
+    install: true,
+    install_dir: lv2_docdir,
+    output: ['html', 'tags'],
+  )
+
+  # TODO: doc_deps is needed because Meson did not support using custom target
+  # outputs as dependencies until 0.60.0.  When 0.60.0 is required, this can be
+  # cleaned up by removing doc_deps and using lv2_tags (not its path) as a
+  # command argument, which Meson will correctly make a dependency for.
+
+  lv2_tags = docs[1]
+  doc_deps = [docs]
+else
+  doc_deps = []
+endif
diff --git a/doc/reference.doxygen.in b/doc/c/reference.doxygen.in
index 5efb066..6318484 100644
--- a/doc/reference.doxygen.in
+++ b/doc/c/reference.doxygen.in
@@ -58,7 +58,7 @@ PROJECT_LOGO           =
 # entered, it will be relative to the location where doxygen was started. If
 # left blank the current directory will be used.
 
-OUTPUT_DIRECTORY       = .
+OUTPUT_DIRECTORY       = @LV2_BUILDDIR@
 
 # If the CREATE_SUBDIRS tag is set to YES then doxygen will create 4096 sub-
 # directories (in 2 levels) under the output directory of each output format and
@@ -762,7 +762,7 @@ FILE_VERSION_FILTER    =
 # DoxygenLayout.xml, doxygen will parse it automatically even if the LAYOUT_FILE
 # tag is left empty.
 
-LAYOUT_FILE            = @LV2_SRCDIR@/doc/layout.xml
+LAYOUT_FILE            = @LV2_SRCDIR@/doc/c/layout.xml
 
 # The CITE_BIB_FILES tag can be used to specify one or more bib files containing
 # the reference definitions. This must be a list of .bib files. The .bib
@@ -864,7 +864,7 @@ WARN_LOGFILE           =
 # spaces. See also FILE_PATTERNS and EXTENSION_MAPPING
 # Note: If this tag is empty the current directory is searched.
 
-INPUT                  = @LV2_SRCDIR@/doc/mainpage.md \
+INPUT                  = @LV2_SRCDIR@/doc/c/mainpage.md \
                          @LV2_SRCDIR@/lv2/atom/atom.h \
                          @LV2_SRCDIR@/lv2/atom/forge.h \
                          @LV2_SRCDIR@/lv2/atom/util.h \
@@ -1045,7 +1045,7 @@ FILTER_SOURCE_PATTERNS =
 # (index.html). This can be useful if you have a project on for instance GitHub
 # and want to reuse the introduction page also for the doxygen output.
 
-USE_MDFILE_AS_MAINPAGE = @LV2_SRCDIR@/doc/mainpage.md
+USE_MDFILE_AS_MAINPAGE = @LV2_SRCDIR@/doc/c/mainpage.md
 
 #---------------------------------------------------------------------------
 # Configuration options related to source browsing
@@ -1167,7 +1167,7 @@ GENERATE_HTML          = YES
 # The default directory is: html.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-HTML_OUTPUT            = html
+HTML_OUTPUT            = @LV2_BUILDDIR@/doc/c/html
 
 # The HTML_FILE_EXTENSION tag can be used to specify the file extension for each
 # generated HTML page (for example: .htm, .php, .asp).
@@ -1194,7 +1194,7 @@ HTML_FILE_EXTENSION    = .html
 # of the possible markers and block names see the documentation.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-HTML_HEADER            = @LV2_SRCDIR@/doc/header.html
+HTML_HEADER            = @LV2_SRCDIR@/doc/c/header.html
 
 # The HTML_FOOTER tag can be used to specify a user-defined HTML footer for each
 # generated HTML page. If the tag is left blank doxygen will generate a standard
@@ -1204,7 +1204,7 @@ HTML_HEADER            = @LV2_SRCDIR@/doc/header.html
 # that doxygen normally uses.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-HTML_FOOTER            = @LV2_SRCDIR@/doc/footer.html
+HTML_FOOTER            = @LV2_SRCDIR@/doc/c/footer.html
 
 # The HTML_STYLESHEET tag can be used to specify a user-defined cascading style
 # sheet that is used by each HTML page. It can be used to fine-tune the look of
@@ -1216,7 +1216,7 @@ HTML_FOOTER            = @LV2_SRCDIR@/doc/footer.html
 # obsolete.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-HTML_STYLESHEET        = @LV2_SRCDIR@/doc/doxy-style.css
+HTML_STYLESHEET        = @LV2_SRCDIR@/doc/c/doxy-style.css
 
 # The HTML_EXTRA_STYLESHEET tag can be used to specify additional user-defined
 # cascading style sheets that are included after the standard style sheets
@@ -2270,7 +2270,7 @@ TAGFILES               =
 # tag file that is based on the input files it reads. See section "Linking to
 # external documentation" for more information about the usage of tag files.
 
-GENERATE_TAGFILE       = tags
+GENERATE_TAGFILE       = @LV2_BUILDDIR@/doc/c/tags
 
 # If the ALLEXTERNALS tag is set to YES, all external class will be listed in
 # the class index. If set to NO, only the inherited external classes will be
diff --git a/doc/meson.build b/doc/meson.build
new file mode 100644
index 0000000..230211e
--- /dev/null
+++ b/doc/meson.build
@@ -0,0 +1,23 @@
+# Copyright 2022 David Robillard <d@drobilla.net>
+# SPDX-License-Identifier: CC0-1.0 OR ISC
+
+if doxygen.found()
+  aux_files = files(
+    'pygments.css',
+    'style.css'
+  )
+
+  foreach file : aux_files
+    configure_file(
+      input: file,
+      output: '@PLAINNAME@',
+      copy: true,
+      install_dir: lv2_docdir / 'aux')
+  endforeach
+
+  subdir('ns')
+
+  build_docs = true
+else
+  build_docs = false
+endif
diff --git a/doc/ns/ext/meson.build b/doc/ns/ext/meson.build
new file mode 100644
index 0000000..4a2ca1f
--- /dev/null
+++ b/doc/ns/ext/meson.build
@@ -0,0 +1,13 @@
+# Copyright 2022 David Robillard <d@drobilla.net>
+# SPDX-License-Identifier: CC0-1.0 OR ISC
+
+config = configuration_data({'BASE': '/ns/ext'})
+
+if get_option('online_docs')
+  htaccess = configure_file(
+    configuration: config,
+    input: files('..' / '..' / 'htaccess.in'),
+    install_dir: lv2_docdir / 'ns' / 'ext',
+    output: '.htaccess',
+  )
+endif
diff --git a/doc/ns/extensions/meson.build b/doc/ns/extensions/meson.build
new file mode 100644
index 0000000..b54e3d2
--- /dev/null
+++ b/doc/ns/extensions/meson.build
@@ -0,0 +1,13 @@
+# Copyright 2022 David Robillard <d@drobilla.net>
+# SPDX-License-Identifier: CC0-1.0 OR ISC
+
+config = configuration_data({'BASE': '/ns/extensions'})
+
+if get_option('online_docs')
+  htaccess = configure_file(
+    configuration: config,
+    input: files('..' / '..' / 'htaccess.in'),
+    install_dir: lv2_docdir / 'ns' / 'extensions',
+    output: '.htaccess',
+  )
+endif
diff --git a/doc/ns/meson.build b/doc/ns/meson.build
new file mode 100644
index 0000000..26471b9
--- /dev/null
+++ b/doc/ns/meson.build
@@ -0,0 +1,33 @@
+# Copyright 2022 David Robillard <d@drobilla.net>
+# SPDX-License-Identifier: CC0-1.0 OR ISC
+
+config = configuration_data({'BASE': '/ns'})
+
+if get_option('online_docs')
+  htaccess = configure_file(
+    configuration: config,
+    input: files('..' / 'htaccess.in'),
+    install_dir: lv2_docdir / 'ns',
+    output: '.htaccess',
+  )
+endif
+
+subdir('ext')
+subdir('extensions')
+
+lv2_build_index = files(lv2_source_root / 'scripts' / 'lv2_build_index.py')
+
+index = custom_target(
+  'index.html',
+  capture: true,
+  command: [
+    lv2_build_index,
+    '--lv2-version', meson.project_version(),
+    '--lv2-source-root', lv2_source_root,
+    '@INPUT@'
+  ],
+  input: spec_files,
+  install: true,
+  install_dir: lv2_docdir / 'ns',
+  output: 'index.html',
+)