build: Add meson build system

Reuse the generated dbus interface .xml files from fprintd to avoid
unnecessary copies.

utils/meson.build

@@ -0,0 +1,67 @@
+dbus_client_glue_sources = []
+
+foreach interface_name: dbus_interfaces
+    interface = interface_name.to_lower()
+    interface_file = meson.source_root() / 'src' / interface + '.xml'
+    glue_name = interface + '-dbus-glue.h'
+    dbus_client_glue_sources += custom_target(glue_name,
+        input: interface_file,
+        output: glue_name,
+        command: [
+            dbus_binding_tool,
+            '--prefix=fprint_' + interface,
+            '--mode=glib-client',
+            '--output=@OUTPUT@',
+            '@INPUT@',
+        ])
+endforeach
+
+utils_marshal = custom_target('utils_marshal',
+    depends: fprintd_marshal,
+    input: fprintd_marshal,
+    output: ['marshal.c', 'marshal.h'],
+    command: [bash, '-c',
+        'cp @INPUT0@ @OUTPUT0@;' +
+        'cp @INPUT1@ @OUTPUT1@;' +
+        'sed s/fprintd-//g -i ' + meson.current_build_dir() / 'marshal*.{h,c}']
+)
+
+libfprintd_utils_dep = declare_dependency(
+    include_directories: [
+        include_directories('../pam'),
+    ],
+    dependencies: [
+        glib_dep,
+        dbus_glib_dep,
+    ],
+    sources: [
+        utils_marshal,
+        dbus_client_glue_sources,
+    ],
+    link_with: static_library('fprintd_utils',
+        sources: [
+            dbus_client_glue_sources,
+            utils_marshal,
+        ],
+        dependencies: [
+            glib_dep,
+        ]
+    ),
+)
+
+utils = [
+    'delete',
+    'enroll',
+    'list',
+    'verify',
+]
+
+fprintd_utils = []
+
+foreach util: utils
+    fprintd_utils += executable('fprintd-' + util,
+        sources: util + '.c',
+        dependencies: libfprintd_utils_dep,
+        install: true,
+    )
+endforeach