WIP: Switch to Meson

meson.build

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+project('lv2', ['c'],
+        version: '1.18.3',
+        license: 'ISC',
+        meson_version: '>= 0.49.2',
+        default_options: [
+          'b_ndebug=if-release',
+          'buildtype=release',
+          'c_std=c99',
+          'default_library=both',
+          'warning_level=2',
+        ])
+
+# Load build tools
+pkg = import('pkgconfig')
+cc = meson.get_compiler('c')
+
+if host_machine.system() == 'darwin'
+  lv2dir = '/Library/Audio/Plug-Ins/LV2'
+  default_lv2_path = [
+    '~/Library/Audio/Plug-Ins/LV2',
+    '~/.lv2',
+    '/usr/local/lib/lv2',
+    '/usr/lib/lv2',
+    '/Library/Audio/Plug-Ins/LV2',
+  ]
+elif host_machine.system() == 'haiku'
+  default_lv2_path = [
+    '~/.lv2',
+    '/boot/common/add-ons/lv2',
+  ]
+elif host_machine.system() == 'win32'
+  lv2dir = env_path('COMMONPROGRAMFILES', 'LV2')
+  default_lv2_path = [
+    '%APPDATA%\\\\LV2',
+    '%COMMONPROGRAMFILES%\\\\LV2',
+  ]
+else
+  libdirname = get_option('libdir')
+  lv2dir = get_option('prefix') / get_option('libdir')
+  default_lv2_path = [
+    '~/.lv2',
+    '/usr/@0@/lv2'.format(libdirname),
+    '/usr/local/@0@/lv2'.format(libdirname),
+  ]
+endif
+
+# Map of specification base name to old URI-style include path
+spec_map = {
+  'atom':            'lv2/lv2plug.in/ns/ext/atom',
+  'buf-size':        'lv2/lv2plug.in/ns/ext/buf-size',
+  'core':            'lv2/lv2plug.in/ns/lv2core',
+  'data-access':     'lv2/lv2plug.in/ns/ext/data-access',
+  'dynmanifest':     'lv2/lv2plug.in/ns/ext/dynmanifest',
+  'event':           'lv2/lv2plug.in/ns/ext/event',
+  'instance-access': 'lv2/lv2plug.in/ns/ext/instance-access',
+  'log':             'lv2/lv2plug.in/ns/ext/log',
+  'midi':            'lv2/lv2plug.in/ns/ext/midi',
+  'morph':           'lv2/lv2plug.in/ns/ext/morph',
+  'options':         'lv2/lv2plug.in/ns/ext/options',
+  'parameters':      'lv2/lv2plug.in/ns/ext/parameters',
+  'patch':           'lv2/lv2plug.in/ns/ext/patch',
+  'port-groups':     'lv2/lv2plug.in/ns/ext/port-groups',
+  'port-props':      'lv2/lv2plug.in/ns/ext/port-props',
+  'presets':         'lv2/lv2plug.in/ns/ext/presets',
+  'resize-port':     'lv2/lv2plug.in/ns/ext/resize-port',
+  'state':           'lv2/lv2plug.in/ns/ext/state',
+  'time':            'lv2/lv2plug.in/ns/ext/time',
+  'ui':              'lv2/lv2plug.in/ns/extensions/ui',
+  'units':           'lv2/lv2plug.in/ns/extensions/units',
+  'uri-map':         'lv2/lv2plug.in/ns/ext/uri-map',
+  'urid':            'lv2/lv2plug.in/ns/ext/urid',
+  'worker':          'lv2/lv2plug.in/ns/ext/worker',
+}
+
+pkg.generate(
+  name: 'LV2',
+  filebase: 'lv2',
+  subdirs: ['lv2'],
+  version: meson.project_version(),
+  description: 'An extensible audio plugin interface')
+
+install_headers('lv2/atom/atom.h', 'lv2/atom/forge.h', 'lv2/atom/util.h', subdir: 'lv2/atom')
+install_headers('lv2/buf-size/buf-size.h', subdir: 'lv2/buf-size')
+install_headers('lv2/core/attributes.h', subdir: 'lv2/core')
+install_headers('lv2/core/lv2.h', subdir: 'lv2/core')
+install_headers('lv2/data-access/data-access.h', subdir: 'lv2/data-access')
+install_headers('lv2/dynmanifest/dynmanifest.h', subdir: 'lv2/dynmanifest')
+install_headers('lv2/event/event-helpers.h', subdir: 'lv2/event')
+install_headers('lv2/event/event.h', subdir: 'lv2/event')
+install_headers('lv2/instance-access/instance-access.h', subdir: 'lv2/instance-access')
+install_headers('lv2/log/log.h', 'lv2/log/logger.h', subdir: 'lv2/log')
+install_headers('lv2/midi/midi.h', subdir: 'lv2/midi')
+install_headers('lv2/morph/morph.h', subdir: 'lv2/morph/morph')
+install_headers('lv2/options/options.h', subdir: 'lv2/options')
+install_headers('lv2/parameters/parameters.h', subdir: 'lv2/parameters')
+install_headers('lv2/patch/patch.h', subdir: 'lv2/patch')
+install_headers('lv2/port-groups/port-groups.h', subdir: 'lv2/port-groups')
+install_headers('lv2/port-props/port-props.h', subdir: 'lv2/port-props')
+install_headers('lv2/presets/presets.h', subdir: 'lv2/presets')
+install_headers('lv2/resize-port/resize-port.h', subdir: 'lv2/resize-port')
+install_headers('lv2/state/state.h', subdir: 'lv2/state')
+install_headers('lv2/time/time.h', subdir: 'lv2/time')
+install_headers('lv2/ui/ui.h', subdir: 'lv2/ui')
+install_headers('lv2/units/units.h', subdir: 'lv2/units')
+install_headers('lv2/uri-map/uri-map.h', subdir: 'lv2/uri-map')
+install_headers('lv2/urid/urid.h', subdir: 'lv2/urid')
+install_headers('lv2/worker/worker.h', subdir: 'lv2/worker')
+
+lv2_dep = declare_dependency(
+  include_directories: include_directories('.'),
+  version: meson.project_version())
+
+# plugins/eg-fifths.lv2/uris.h
+# plugins/eg-params.lv2/state_map.h
+# plugins/eg-sampler.lv2/atom_sink.h
+# plugins/eg-sampler.lv2/peaks.h
+# plugins/eg-sampler.lv2/uris.h
+# plugins/eg-scope.lv2/uris.h