diff --git a/lib/wp/meson.build b/lib/wp/meson.build
index d6665799..ad6ee14e 100644
--- a/lib/wp/meson.build
+++ b/lib/wp/meson.build
@@ -124,8 +124,6 @@ wpbuildbasedirs = configure_file (
 wp_lib = library('wireplumber-' + wireplumber_api_version,
   wp_lib_sources, wp_lib_priv_sources, wpenums_c, wpenums_h, wpversion, wpbuildbasedirs,
   c_args : [
-    '-D_GNU_SOURCE',
-    '-DG_LOG_USE_STRUCTURED',
     '-DBUILDING_WP',
   ],
   install: true,
diff --git a/meson.build b/meson.build
index ce2818e2..f48b1c3f 100644
--- a/meson.build
+++ b/meson.build
@@ -134,6 +134,12 @@ common_flags = [
 ]
 add_project_arguments(cc.get_supported_arguments(common_flags), language: 'c')
 
+common_args = [
+  '-D_GNU_SOURCE',
+  '-DG_LOG_USE_STRUCTURED',
+]
+add_project_arguments(common_args, language: 'c')
+
 subdir('lib')
 if build_modules
   subdir('modules')
diff --git a/modules/meson.build b/modules/meson.build
index 46baa8e3..7eb498e5 100644
--- a/modules/meson.build
+++ b/modules/meson.build
@@ -1,14 +1,8 @@
-common_c_args = [
-  '-D_GNU_SOURCE',
-  '-DG_LOG_USE_STRUCTURED',
-]
-
 shared_library(
   'wireplumber-module-settings',
   [
     'module-settings.c',
   ],
-  c_args : [common_c_args],
   install : true,
   install_dir : wireplumber_module_dir,
   dependencies : [wp_dep, pipewire_dep],
@@ -23,7 +17,6 @@ shared_library(
     'module-dbus-connection.c',
     dbus_connection_enums,
   ],
-  c_args : [common_c_args],
   install : true,
   install_dir : wireplumber_module_dir,
   dependencies : [wp_dep],
@@ -34,7 +27,6 @@ shared_library(
   [
     'module-default-nodes-api.c',
   ],
-  c_args : [common_c_args],
   install : true,
   install_dir : wireplumber_module_dir,
   dependencies : [wp_dep, pipewire_dep],
@@ -50,7 +42,6 @@ shared_library(
     reserve_device_interface_src,
     reserve_device_enums,
   ],
-  c_args : [common_c_args],
   include_directories: reserve_device_includes,
   install : true,
   install_dir : wireplumber_module_dir,
@@ -62,7 +53,6 @@ shared_library(
   [
     'module-portal-permissionstore.c',
   ],
-  c_args : [common_c_args],
   install : true,
   install_dir : wireplumber_module_dir,
   dependencies : [wp_dep, giounix_dep],
@@ -73,7 +63,6 @@ shared_library(
   [
     'module-si-audio-adapter.c',
   ],
-  c_args : [common_c_args],
   install : true,
   install_dir : wireplumber_module_dir,
   dependencies : [wp_dep, pipewire_dep],
@@ -84,7 +73,6 @@ shared_library(
   [
     'module-si-audio-virtual.c',
   ],
-  c_args : [common_c_args],
   install : true,
   install_dir : wireplumber_module_dir,
   dependencies : [wp_dep, pipewire_dep],
@@ -95,7 +83,6 @@ shared_library(
   [
     'module-si-node.c',
   ],
-  c_args : [common_c_args],
   install : true,
   install_dir : wireplumber_module_dir,
   dependencies : [wp_dep, pipewire_dep],
@@ -106,7 +93,6 @@ shared_library(
   [
     'module-si-standard-link.c',
   ],
-  c_args : [common_c_args],
   install : true,
   install_dir : wireplumber_module_dir,
   dependencies : [wp_dep, pipewire_dep],
@@ -123,7 +109,6 @@ shared_library(
     'module-lua-scripting/api/api.c',
      m_lua_scripting_resources,
   ],
-  c_args : [common_c_args],
   install : true,
   install_dir : wireplumber_module_dir,
   dependencies : [wp_dep, pipewire_dep, wplua_dep, libintl_dep],
@@ -134,7 +119,6 @@ shared_library(
   [
     'module-mixer-api.c',
   ],
-  c_args : [common_c_args],
   install : true,
   install_dir : wireplumber_module_dir,
   dependencies : [wp_dep, pipewire_dep, mathlib],
@@ -145,7 +129,6 @@ shared_library(
   [
     'module-file-monitor-api.c',
   ],
-  c_args : [common_c_args],
   install : true,
   install_dir : wireplumber_module_dir,
   dependencies : [wp_dep, pipewire_dep],
@@ -156,7 +139,6 @@ shared_library(
   [
     'module-log-settings.c',
   ],
-  c_args : [common_c_args, '-DG_LOG_DOMAIN="m-log-settings"'],
   install : true,
   install_dir : wireplumber_module_dir,
   dependencies : [wp_dep, pipewire_dep],
@@ -168,7 +150,6 @@ if libsystemd_dep.found() or libelogind_dep.found()
     [
       'module-logind.c',
     ],
-    c_args : [common_c_args],
     install : true,
     install_dir : wireplumber_module_dir,
     dependencies : [wp_dep, pipewire_dep, libsystemd_dep, libelogind_dep],
@@ -180,7 +161,6 @@ shared_library(
   [
     'module-standard-event-source.c',
   ],
-  c_args : [common_c_args],
   install : true,
   install_dir : wireplumber_module_dir,
   dependencies : [wp_dep, pipewire_dep],
diff --git a/modules/module-lua-scripting/wplua/meson.build b/modules/module-lua-scripting/wplua/meson.build
index a07aab02..8c6115e5 100644
--- a/modules/module-lua-scripting/wplua/meson.build
+++ b/modules/module-lua-scripting/wplua/meson.build
@@ -16,10 +16,6 @@ wplua_resources = gnome.compile_resources(
 
 wplua_lib = static_library('wplua-' + wireplumber_api_version,
   [ wplua_lib_sources, wplua_resources ],
-  c_args : [
-    '-D_GNU_SOURCE',
-    '-DG_LOG_USE_STRUCTURED',
-  ],
   install: false,
   include_directories: wplua_include_dir,
   dependencies : [wp_dep, lua_dep],
diff --git a/src/meson.build b/src/meson.build
index 733e8c30..3a1b75c5 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -30,10 +30,6 @@ if build_daemon
 
   wireplumber = executable('wireplumber',
     wp_sources,
-    c_args : [
-      '-D_GNU_SOURCE',
-      '-DG_LOG_USE_STRUCTURED',
-    ],
     install: true,
     dependencies : [gobject_dep, gio_dep, wp_dep, pipewire_dep],
   )
diff --git a/src/tools/meson.build b/src/tools/meson.build
index 9e7d66bc..da12d4ac 100644
--- a/src/tools/meson.build
+++ b/src/tools/meson.build
@@ -1,9 +1,5 @@
 executable('wpctl',
   'wpctl.c',
-  c_args : [
-    '-D_GNU_SOURCE',
-    '-DG_LOG_USE_STRUCTURED',
-  ],
   install: true,
   dependencies : [gobject_dep, gio_dep, wp_dep, pipewire_dep],
 )
@@ -15,10 +11,6 @@ install_data('shell-completion/wpctl.zsh',
 
 executable('wpexec',
   'wpexec.c',
-  c_args : [
-    '-D_GNU_SOURCE',
-    '-DG_LOG_USE_STRUCTURED',
-  ],
   install: true,
   dependencies : [gobject_dep, gio_dep, wp_dep, pipewire_dep],
 )
diff --git a/tests/modules/meson.build b/tests/modules/meson.build
index 60dff5ec..f3f694e6 100644
--- a/tests/modules/meson.build
+++ b/tests/modules/meson.build
@@ -2,23 +2,19 @@ common_deps = [gobject_dep, gio_dep, wp_dep, pipewire_dep]
 common_env = common_test_env
 common_env.set('G_TEST_SRCDIR', meson.current_source_dir())
 common_env.set('G_TEST_BUILDDIR', meson.current_build_dir())
-common_args = [
-  '-D_GNU_SOURCE',
-  '-DG_LOG_USE_STRUCTURED',
-]
 
 if get_option('dbus-tests')
   test(
     'test-dbus-connection',
     executable('test-dbus-connection', 'dbus-connection.c',
-        dependencies: common_deps, c_args: common_args),
+        dependencies: common_deps),
     env: common_env,
   )
 
   test(
     'test-reserve-device',
     executable('test-reserve-device', 'reserve-device.c',
-      dependencies: common_deps, c_args: common_args),
+      dependencies: common_deps),
     env: common_env,
   )
 endif
@@ -26,34 +22,34 @@ endif
 test(
   'test-file-monitor',
   executable('test-file-monitor', 'file-monitor.c',
-    dependencies: common_deps, c_args: common_args),
+    dependencies: common_deps),
   env: common_env,
 )
 
 test(
   'test-si-node',
   executable('test-si-node', 'si-node.c',
-      dependencies: common_deps, c_args: common_args),
+      dependencies: common_deps),
   env: common_env,
 )
 
 test(
   'test-si-audio-adapter',
   executable('test-si-audio-adapter', 'si-audio-adapter.c',
-      dependencies: common_deps, c_args: common_args),
+      dependencies: common_deps),
   env: common_env,
 )
 
 test(
   'test-si-audio-virtual',
   executable('test-si-audio-virtual', 'si-audio-virtual.c',
-      dependencies: common_deps, c_args: common_args),
+      dependencies: common_deps),
   env: common_env,
 )
 
 test(
   'test-si-standard-link',
   executable('test-si-standard-link', 'si-standard-link.c',
-      dependencies: common_deps, c_args: common_args),
+      dependencies: common_deps),
   env: common_env,
 )
diff --git a/tests/scripts/meson.build b/tests/scripts/meson.build
index f579f2cb..34bb434a 100644
--- a/tests/scripts/meson.build
+++ b/tests/scripts/meson.build
@@ -3,13 +3,10 @@ common_env = common_test_env
 common_env.prepend('WIREPLUMBER_DATA_DIR', meson.current_source_dir())
 common_env.set('G_TEST_SRCDIR', meson.current_source_dir())
 common_env.set('G_TEST_BUILDDIR', meson.current_build_dir())
-common_args = [
-  '-D_GNU_SOURCE',
-]
 
 script_tester = executable('script-tester',
     '..'/'script-tester.c',
-    dependencies: common_deps, c_args: common_args
+    dependencies: common_deps
 )
 
 test(
diff --git a/tests/wp/meson.build b/tests/wp/meson.build
index f3eabdd8..cc0b9ac8 100644
--- a/tests/wp/meson.build
+++ b/tests/wp/meson.build
@@ -2,133 +2,129 @@ common_deps = [gobject_dep, gio_dep, wp_dep, pipewire_dep]
 common_env = common_test_env
 common_env.set('G_TEST_SRCDIR', meson.current_source_dir())
 common_env.set('G_TEST_BUILDDIR', meson.current_build_dir())
-common_args = [
-  '-D_GNU_SOURCE',
-  '-DG_LOG_USE_STRUCTURED',
-]
 
 test(
   'test-component-loader',
   executable('test-component-loader', 'component-loader.c',
-      dependencies: common_deps, c_args: common_args),
+      dependencies: common_deps),
   env: common_env,
 )
 
 test(
   'test-core',
   executable('test-core', 'core.c',
-      dependencies: common_deps, c_args: common_args),
+      dependencies: common_deps),
   env: common_env,
 )
 
 test(
   'test-events',
   executable('test-events', 'events.c',
-      dependencies: common_deps, c_args: common_args),
+      dependencies: common_deps),
   env: common_env,
 )
 
 test(
   'test-metadata',
   executable('test-metadata', 'metadata.c',
-      dependencies: common_deps, c_args: common_args),
+      dependencies: common_deps),
   env: common_env,
 )
 
 test(
   'test-object-interest',
   executable('test-object-interest', 'object-interest.c',
-      dependencies: common_deps, c_args: common_args),
+      dependencies: common_deps),
   env: common_env,
 )
 
 test(
   'test-object-manager',
   executable('test-object-manager', 'object-manager.c',
-      dependencies: common_deps, c_args: common_args),
+      dependencies: common_deps),
   env: common_env,
 )
 
 test(
   'test-properties',
   executable('test-properties', 'properties.c',
-      dependencies: common_deps, c_args: common_args),
+      dependencies: common_deps),
   env: common_env,
 )
 
 test(
   'test-proxy',
   executable('test-proxy', 'proxy.c',
-      dependencies: common_deps, c_args: common_args),
+      dependencies: common_deps),
   env: common_env,
 )
 
 test(
   'test-session-item',
   executable('test-session-item', 'session-item.c',
-      dependencies: common_deps, c_args: common_args),
+      dependencies: common_deps),
   env: common_env,
 )
 
 test(
   'test-spa-json',
   executable('test-spa-json', 'spa-json.c',
-      dependencies: common_deps, c_args: common_args),
+      dependencies: common_deps),
   env: common_env,
 )
 
 test(
   'test-spa-pod',
   executable('test-spa-pod', 'spa-pod.c',
-      dependencies: common_deps, c_args: common_args),
+      dependencies: common_deps),
   env: common_env,
 )
 
 test(
   'test-spa-type',
   executable('test-spa-type', 'spa-type.c',
-      dependencies: common_deps, c_args: common_args),
+      dependencies: common_deps),
   env: common_env,
 )
 
 test(
   'test-state',
   executable('test-state', 'state.c',
-      dependencies: common_deps, c_args: common_args),
+      dependencies: common_deps),
   env: common_env,
 )
 
 test(
   'test-settings',
   executable('test-settings', 'settings.c',
-      dependencies: common_deps, c_args: common_args),
+      dependencies: common_deps),
   env: common_env,
 )
 
 test(
   'test-transition',
   executable('test-transition', 'transition.c',
-      dependencies: common_deps, c_args: common_args),
+      dependencies: common_deps),
   env: common_env,
 )
 
 test(
   'test-factory',
   executable('test-factory', 'factory.c',
-      dependencies: common_deps, c_args: common_args),
+      dependencies: common_deps),
   env: common_env,
 )
 
 test(
   'test-conf',
   executable('test-conf', 'conf.c',
-      dependencies: common_deps, c_args: common_args),
+      dependencies: common_deps),
   env: common_env,
 )
 
 test(
   'test-json-utils',
   executable('test-json-utils', 'json-utils.c',
-      dependencies: common_deps, c_args: common_args),
+      dependencies: common_deps),
   env: common_env,
 )
diff --git a/tests/wplua/meson.build b/tests/wplua/meson.build
index 21ff07e3..5f96ef04 100644
--- a/tests/wplua/meson.build
+++ b/tests/wplua/meson.build
@@ -3,20 +3,17 @@ common_env = common_test_env
 common_env.prepend('WIREPLUMBER_DATA_DIR', meson.current_source_dir())
 common_env.set('G_TEST_SRCDIR', meson.current_source_dir())
 common_env.set('G_TEST_BUILDDIR', meson.current_build_dir())
-common_args = [
-  '-D_GNU_SOURCE',
-]
 
 test(
   'test-wplua',
   executable('test-wplua', 'wplua.c',
-    dependencies: common_deps, c_args: common_args),
+    dependencies: common_deps),
   env: common_env,
 )
 
 script_tester = executable('script-tester',
     '..'/'script-tester.c',
-    dependencies: common_deps, c_args: common_args
+    dependencies: common_deps
 )
 
 test(