Add support for building with meson

fixes #44

meson.build

@@ -0,0 +1,15 @@
+project(
+    'ddbus',
+    'd',
+    meson_version: '>=0.50',
+    version: '3.0.0',
+)
+
+src_inc = include_directories('source')
+
+prefix = get_option('prefix')
+include_dir = join_paths(prefix, get_option('includedir'), 'd', 'apk-polkit')
+
+dbus_dep = dependency('dbus-1')
+
+subdir('source/ddbus')

source/ddbus/meson.build

@@ -0,0 +1,33 @@
+lib_src = [
+    'attributes.d',
+    'bus.d',
+    'c_lib.d',
+    'conv.d',
+    'exception.d',
+    'package.d',
+    'router.d',
+    'simple.d',
+    'thin.d',
+    'util.d',
+]
+
+ddbus_lib = library(
+    'ddbus',
+    lib_src,
+    version: meson.project_version(),
+    install: true,
+    include_directories: src_inc,
+)
+
+pkgc = import('pkgconfig')
+
+pkgc.generate(
+    ddbus_lib,
+    subdirs: 'd/ddbus',
+    requires: dbus_dep,
+)
+
+install_headers(
+    lib_src,
+    subdir: 'd/ddbus/ddbus',
+)