meson: Bump requirements to 0.56 and adapt deprecated functions

doc/meson.build

@@ -25,7 +25,7 @@ docpath = join_paths(get_option('datadir'), 'gtk-doc', 'html')
 
 gnome.gtkdoc(versioned_libname,
     main_xml: 'libfprint-docs.xml',
-    src_dir: join_paths(meson.source_root(), 'libfprint'),
+    src_dir: join_paths(meson.project_source_root(), 'libfprint'),
     include_directories: include_directories('../libfprint'),
     dependencies: libfprint_dep,
     content_files: content_files,

libfprint/meson.build

@@ -263,7 +263,7 @@ libfprint_drivers = static_library('fprint-drivers',
     install: false)
 
 mapfile = files('libfprint.ver')
-vflag = '-Wl,--version-script,@0@/@1@'.format(meson.source_root(), mapfile[0])
+vflag = '-Wl,--version-script,@0@/@1@'.format(meson.project_source_root(), mapfile[0])
 
 libfprint = shared_library(versioned_libname.split('lib')[1],
     sources: [
@@ -339,7 +339,7 @@ sync_udev_udb = custom_target('sync-udev-hwdb',
     command: [
         'cp', '-v',
         udev_hwdb_generator.full_path(),
-        meson.source_root() / 'data'
+        meson.project_source_root() / 'data'
     ]
 )
 

meson.build

@@ -6,7 +6,7 @@ project('libfprint', [ 'c', 'cpp' ],
         'warning_level=1',
         'c_std=gnu99',
     ],
-    meson_version: '>= 0.49.0')
+    meson_version: '>= 0.56.0')
 
 gnome = import('gnome')
 

tests/meson.build

@@ -4,9 +4,9 @@ envs.set('G_DEBUG', 'fatal-warnings')
 envs.set('G_MESSAGES_DEBUG', 'all')
 
 # Setup paths
-envs.set('MESON_SOURCE_ROOT', meson.source_root())
-envs.set('MESON_BUILD_ROOT', meson.build_root())
-envs.prepend('LD_LIBRARY_PATH', join_paths(meson.build_root(), 'libfprint'))
+envs.set('MESON_SOURCE_ROOT', meson.project_source_root())
+envs.set('MESON_BUILD_ROOT', meson.project_build_root())
+envs.prepend('LD_LIBRARY_PATH', meson.project_build_root() / 'libfprint')
 
 # Set FP_DEVICE_EMULATION so that drivers can adapt (e.g. to use fixed
 # random numbers rather than proper ones)
@@ -45,15 +45,15 @@ drivers_tests = [
 
 if get_option('introspection')
   conf = configuration_data()
-  conf.set('SRCDIR', meson.source_root())
-  conf.set('BUILDDIR', meson.build_root())
+  conf.set('SRCDIR', meson.project_source_root())
+  conf.set('BUILDDIR', meson.project_build_root())
   configure_file(configuration: conf,
       input: 'create-driver-test.py.in',
       output: 'create-driver-test.py')
 endif
 
 if get_option('introspection')
-    envs.prepend('GI_TYPELIB_PATH', join_paths(meson.build_root(), 'libfprint'))
+    envs.prepend('GI_TYPELIB_PATH', meson.project_build_root() / 'libfprint')
     virtual_devices_tests = [
         'virtual-image',
         'virtual-device',
@@ -165,7 +165,7 @@ endif
 unit_tests_deps = { 'fpi-assembling' : [cairo_dep] }
 
 test_config = configuration_data()
-test_config.set_quoted('SOURCE_ROOT', meson.source_root())
+test_config.set_quoted('SOURCE_ROOT', meson.project_source_root())
 test_config_h = configure_file(output: 'test-config.h', configuration: test_config)
 
 foreach test_name: unit_tests
@@ -218,7 +218,7 @@ test('udev-hwdb',
 gdb = find_program('gdb', required: false)
 if gdb.found()
     libfprint_wrapper = [
-        gdb.path(),
+        gdb.full_path(),
         '-batch',
         '-ex', 'run',
         '--args',
@@ -235,12 +235,12 @@ valgrind = find_program('valgrind', required: false)
 if valgrind.found()
     glib_share = glib_dep.get_pkgconfig_variable('prefix') / 'share' / glib_dep.name()
     glib_suppressions = glib_share + '/valgrind/glib.supp'
-    libfprint_suppressions = '@0@/@1@'.format(meson.source_root(),
+    libfprint_suppressions = '@0@/@1@'.format(meson.project_source_root(),
         files('libfprint.supp')[0])
-    python_suppressions = '@0@/@1@'.format(meson.source_root(),
+    python_suppressions = '@0@/@1@'.format(meson.project_source_root(),
         files('valgrind-python.supp')[0])
     libfprint_wrapper = [
-        valgrind.path(),
+        valgrind.full_path(),
         '--tool=memcheck',
         '--leak-check=full',
         '--leak-resolution=high',