fixup! Refactor Meson build.

Format with muon fmt.
Cleanups.

appveyor_build.sh

@@ -35,7 +35,6 @@ export PWD="$APPVEYOR_BULD_FOLDER"
 # Meson build, we need a way to parallel this with Autotools
 meson setup _build --buildtype=release -Dgegl=false -Ddocs=false
 meson dist -C _build
-popd
 rm -rf _build
 
 ./autogen.sh

doc/meson.build

@@ -1,7 +1,7 @@
 doc_conf = configuration_data()
 doc_conf.merge_from(conf)
 
-doc_conf.set('SOURCE_ROOT', meson.source_root())
+doc_conf.set('SOURCE_ROOT', meson.project_source_root())
 doc_conf.set('BUILD_PATH', meson.current_build_dir())
 
 doxyfile = configure_file(
@@ -10,17 +10,20 @@ doxyfile = configure_file(
   configuration: doc_conf,
 )
 
-doxygen_index = custom_target('doxygen',
-  input : doxyfile,
-  output: 'index.xml'
+doxygen_index = custom_target(
+  'doxygen',
+  input: doxyfile,
+  output: 'index.xml',
   command: [
-    doxygen, '@INPUT@',
+    doxygen,
+    '@INPUT@',
   ],
 )
 
 subdir('source')
 
-run_target('sphinx',
+run_target(
+  'sphinx',
   depends: doxygen_index,
   command: [
     sphinx_build,

doc/source/meson.build

@@ -1,5 +1,5 @@
 sphinx_conf_file = configure_file(
-  input : 'conf.py.in',
+  input: 'conf.py.in',
   output: 'conf.py',
-  configuration : doc_conf,
+  configuration: doc_conf,
 )

gegl/meson.build

@@ -10,27 +10,30 @@ libmypaint_gegl_headers = [
   'mypaint-gegl-surface.h',
 ]
 
-libmypaint_gegl = library('mypaint-gegl-@0@'.format(api_platform_version),
+libmypaint_gegl = library(
+  'mypaint-gegl-@0@'.format(api_platform_version),
   libmypaint_gegl_sources,
   include_directories: toplevel_inc,
   link_with: libmypaint,
   dependencies: [
     json,
-    glib,
+    gobject,
     gegl,
   ],
   install: true,
 )
 
-install_headers(libmypaint_gegl_headers,
-  subdir: 'libmypaint-gegl'
+install_headers(
+  libmypaint_gegl_headers,
+  subdir: 'libmypaint-gegl',
 )
 
 
 if get_option('introspection')
   gnome = import('gnome')
 
-  libmypaint_gegl_gir = gnome.generate_gir(libmypaint_gegl,
+  libmypaint_gegl_gir = gnome.generate_gir(
+    libmypaint_gegl,
     namespace: 'MyPaintGegl',
     nsversion: api_platform_version,
 
@@ -48,7 +51,8 @@ if get_option('introspection')
 endif
 
 
-pkgconfig.generate(libmypaint_gegl,
+pkgconfig.generate(
+  libmypaint_gegl,
   name: meson.project_name() + '-gegl-' + api_platform_version,
   version: version_full,
   description: 'MyPaint brush engine library, with GEGL integration',

generate.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # libmypaint - The MyPaint Brush Library
 # Copyright (C) 2007-2012 Martin Renold <martinxyz@gmx.ch>
 # Copyright (C) 2012-2020 by the MyPaint Development Team.

meson.build

@@ -1,11 +1,12 @@
-project('libmypaint',
+project(
+  'libmypaint',
   'c',
   # API version: see https://github.com/mypaint/libmypaint/wiki/Versioning
   # See http://semver.org/ for what this means.
   version: '2.0.0-beta',
-  meson_version: '>=0.49.0',
+  meson_version: '>=0.60.0',
   default_options: [
-    'c_std=c99'
+    'c_std=c99',
   ],
 )
 
@@ -20,10 +21,10 @@ pkgconfig = import('pkgconfig')
 
 version_full = meson.project_version()
 version_dash_split = version_full.split('-')
-version            = version_dash_split[0]
+version_stable = version_dash_split[0]
 version_prerelease = version_dash_split.get(1, '') # may be blank
 
-version_array = version.split('.')
+version_array = version_stable.split('.')
 version_major = version_array[0]
 version_minor = version_array[1]
 version_micro = version_array[2]
@@ -43,24 +44,26 @@ project_url = 'https://github.com/mypaint/libmypaint'
 conf.set('PACKAGE_NAME', meson.project_name())
 conf.set('PACKAGE_URL', project_url)
 conf.set('LIBMYPAINT_API_PLATFORM_VERSION', api_platform_version)
-conf.set('LIBMYPAINT_VERSION', version)
+conf.set('LIBMYPAINT_VERSION', version_stable)
 conf.set('LIBMYPAINT_VERSION_FULL', version_full)
 
 gettext_package = api_name
-conf.set_quoted('GETTEXT_PACKAGE', gettext_package,
-  description: 'The prefix for our gettext translation domains.'
+conf.set_quoted(
+  'GETTEXT_PACKAGE',
+  gettext_package,
+  description: 'The prefix for our gettext translation domains.',
 )
 
 ###############################################################################
-# Libtool versionning
+# Libtool versioning
 
 # ABI version see: https://autotools.io/libtool/version.html
 # https://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
-abi_revision = 0  # increment on every release
-abi_current = 0   # inc when add/remove/change interfaces
-abi_age = 0       # inc only if changes backward compat
+abi_revision = 0 # increment on every release
+abi_current = 0 # inc when add/remove/change interfaces
+abi_age = 0 # inc only if changes backward compat
 # FIXME: Not correct.
-abi_version_info = '@0@.@1@.@2@'.format(abi_current, abi_revision, abi_age)
+abi_version_info = f'@abi_current@.@abi_revision@.@abi_age@'
 
 ###############################################################################
 # System detection, compiler options
@@ -79,44 +82,25 @@ libmath = cc.find_library('m', required: false)
 json = dependency('json-c')
 
 # glib
-use_glib = get_option('glib') or get_option('introspection')
-if use_glib
-  glib = dependency('gobject-2.0')
-endif
+gobject = dependency('gobject-2.0', required: get_option('glib'))
+use_glib = gobject.found()
 conf.set10('MYPAINT_CONFIG_USE_GLIB', use_glib)
 
 # GEGL
-if get_option('gegl')
-  gegl = dependency('gegl-0.4', version: '>=0.4', required: false)
-  gegl_gir = 'Gegl-0.4'
-  if not gegl.found()
-    gegl = dependency('gegl-0.3', version: '>=0.3')
-    gegl_gir = 'Gegl-0.3'
-  endif
-else
-  gegl = dependency('', required: false)
+gegl = dependency('gegl-0.4', 'gegl-0.3', required: get_option('gegl'))
+use_gegl = gegl.found()
+if use_gegl
+  gegl_gir = gegl.version().version_compare('>=0.4') ? 'Gegl-0.4' : 'Gegl-0.3'
 endif
 
 introspection_required_version = '1.32.0'
 
 
 # OpenMP
-if get_option('openmp')
-  # OpenMP requires meson >= 0.46.
-  if meson.version().version_compare('<0.46.0')
-    error('Meson 0.46.0 is required for OpenMP support.')
-  endif
-  openmp = dependency('openmp')
-else
-  openmp = declare_dependency()
-endif
+openmp = dependency('openmp', required: get_option('openmp'))
 
 ## gperftools ##
-if get_option('gperftools')
-  libprofiler = dependency('libprofiler')
-else
-  libprofiler = declare_dependency()
-endif
+libprofiler = dependency('libprofiler', required: get_option('gperftools'))
 
 # Profiling
 if get_option('profiling')
@@ -143,8 +127,12 @@ conf.set10('HAVE_GETTEXT', have_i18n)
 enable_docs = get_option('docs')
 if enable_docs
   doxygen = find_program('doxygen')
-  sphinx_build = find_program('sphinx-build3', 'sphinx-build-3',
-    'sphinx-build2', 'sphinx-build-2', 'sphinx-build'
+  sphinx_build = find_program(
+    'sphinx-build3',
+    'sphinx-build-3',
+    'sphinx-build2',
+    'sphinx-build-2',
+    'sphinx-build',
   )
   # todo: the python 'breathe' extension is also a dependency to doc building.
   # the configure script should check for its existence.
@@ -158,24 +146,25 @@ toplevel_inc = include_directories('.')
 
 configure_file(
   output: 'config.h',
-  configuration: conf
+  configuration: conf,
 )
 
 # TODO change generate.py
 
-configure_file(
-  input : 'brushsettings.json',
-  output: 'brushsettings.json',
-  copy: true,
-)
-brush_settings_headers = custom_target('brush_settings_headers',
+brush_settings_headers = custom_target(
+  'brush_settings_headers',
   input: 'brushsettings.json',
-  output: [ 'mypaint-brush-settings-gen.h', 'brushsettings-gen.h' ],
+  output: [
+    'mypaint-brush-settings-gen.h',
+    'brushsettings-gen.h',
+  ],
   command: [
-    find_program('generate.py'), '@OUTPUT@'
+    find_program('python3'),
+    meson.current_source_dir() / 'generate.py',
+    '@OUTPUT@',
   ],
   install: true,
-  install_dir: [ get_option('includedir') / api_name, false ],
+  install_dir: [get_option('includedir') / api_name, false],
 )
 
 
@@ -217,13 +206,15 @@ libmypaint_public_headers = [
   libmypaint_introspectable_headers,
 ]
 
-install_headers(libmypaint_public_headers,
+install_headers(
+  libmypaint_public_headers,
   subdir: api_name,
 )
 
 # Install in subdirectory
 if use_glib
-  install_headers('glib/mypaint-brush.h',
+  install_headers(
+    'glib/mypaint-brush.h',
     subdir: api_name / 'glib',
   )
   libmypaint_introspectable_headers += 'glib/mypaint-brush.h'
@@ -234,10 +225,12 @@ endif
 libmypaint_introspectable_headers += brush_settings_headers[0]
 
 
-libmypaint = library('mypaint-@0@'.format(api_platform_version),
-  libmypaint_sources, brush_settings_headers,
+libmypaint = library(
+  'mypaint-@0@'.format(api_platform_version),
+  libmypaint_sources,
+  brush_settings_headers,
   dependencies: [
-    glib,
+    gobject,
     json,
     libintl,
     libmath,
@@ -249,9 +242,13 @@ libmypaint = library('mypaint-@0@'.format(api_platform_version),
 
 
 if get_option('introspection')
+  if not use_glib
+    error('Generating GObject introspection requires building with GLib support')
+  endif
   gnome = import('gnome')
 
-  libmypaint_gir = gnome.generate_gir(libmypaint,
+  libmypaint_gir = gnome.generate_gir(
+    libmypaint,
     nsversion: api_platform_version,
     namespace: 'MyPaint',
 
@@ -268,7 +265,8 @@ if get_option('introspection')
 endif
 
 
-pkgconfig.generate(libmypaint,
+pkgconfig.generate(
+  libmypaint,
   name: meson.project_name() + '-' + api_platform_version,
   version: version_full,
   description: 'MyPaint\'s brushstroke rendering library',
@@ -277,7 +275,7 @@ pkgconfig.generate(libmypaint,
 )
 
 
-if gegl.found()
+if use_gegl
   subdir('gegl')
 endif
 

meson_options.txt

@@ -1,10 +1,50 @@
-option('glib',          type: 'boolean', value: true,  description: 'Use GLib (forced on by introspection)')
-option('gegl',          type: 'boolean', value: false, description: 'Enable GEGL based code')
-option('openmp',        type: 'boolean', value: false, description: 'Compile with OpenMP')
-option('gperftools',    type: 'boolean', value: false, description: 'Enable gperftools in build, for profiling')
+option(
+  'glib',
+  type: 'feature',
+  value: 'auto',
+  description: 'Use GLib',
+)
+option(
+  'gegl',
+  type: 'feature',
+  value: 'auto',
+  description: 'Enable GEGL based code',
+)
+option(
+  'openmp',
+  type: 'feature',
+  value: 'auto',
+  description: 'Compile with OpenMP',
+)
+option(
+  'gperftools',
+  type: 'boolean',
+  value: false,
+  description: 'Enable gperftools in build, for profiling',
+)
 
-option('profiling',     type: 'boolean', value: false, description: 'Turn on profiling')
+option(
+  'profiling',
+  type: 'boolean',
+  value: false,
+  description: 'Turn on profiling',
+)
 
-option('docs',          type: 'boolean', value: false, description: 'Enable documentation build')
-option('i18n',          type: 'boolean', value: true,  description: 'Enable internationalization')
-option('introspection', type: 'boolean', value: true,  description: 'Enable GObject Instrospection')
+option(
+  'docs',
+  type: 'boolean',
+  value: false,
+  description: 'Enable documentation build',
+)
+option(
+  'i18n',
+  type: 'boolean',
+  value: true,
+  description: 'Enable internationalization',
+)
+option(
+  'introspection',
+  type: 'boolean',
+  value: true,
+  description: 'Enable GObject Instrospection',
+)