Add boost_dep in subdir meson.build files

src/db/meson.build

@@ -45,6 +45,9 @@ db_glue = static_library(
   'db_glue',
   db_glue_sources,
   include_directories: inc,
+  dependencies: [
+    boost_dep,
+  ],
 )
 
 db_glue_dep = declare_dependency(

src/event/meson.build

@@ -16,6 +16,9 @@ event = static_library(
   'Thread.cxx',
   'Loop.cxx',
   include_directories: inc,
+  dependencies: [
+    boost_dep,
+  ],
 )
 
 event_dep = declare_dependency(

src/input/meson.build

@@ -7,6 +7,9 @@ input_api = static_library(
   'AsyncInputStream.cxx',
   'ProxyInputStream.cxx',
   include_directories: inc,
+  dependencies: [
+    boost_dep,
+  ],
 )
 
 input_api_dep = declare_dependency(

src/storage/meson.build

@@ -18,6 +18,9 @@ storage_glue = static_library(
   'Configured.cxx',
   'StorageState.cxx',
   include_directories: inc,
+  dependencies: [
+    boost_dep,
+  ],
 )
 
 storage_glue_dep = declare_dependency(