build: Split c++ sources into a subdirectory

Change-Id: Iedea50c688189ae4953195105e323f7173d17a4b
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/src/meson.build b/src/meson.build
new file mode 100644
index 0000000..31371f9
--- /dev/null
+++ b/src/meson.build
@@ -0,0 +1,94 @@
+phosphor_dbus_interfaces_dep = dependency('phosphor-dbus-interfaces')
+phosphor_logging_dep = dependency('phosphor-logging')
+
+src_includes = include_directories('.')
+
+executable(
+  'ncsi-netlink',
+  'argument.cpp',
+  'ncsi_netlink_main.cpp',
+  'ncsi_util.cpp',
+  implicit_include_directories: false,
+  include_directories: src_includes,
+  dependencies: [
+    dependency('libnl-3.0'),
+    dependency('libnl-genl-3.0'),
+    phosphor_dbus_interfaces_dep,
+    phosphor_logging_dep,
+  ],
+  install: true,
+  install_dir: get_option('bindir'))
+
+json_dep = declare_dependency()
+if get_option('sync-mac')
+  # nlohmann_json might not have a pkg-config. It is header only so just make
+  # sure we can access the needed symbols from the header.
+  has_json = meson.get_compiler('cpp').has_header_symbol(
+    'nlohmann/json.hpp',
+    'nlohmann::json::string_t',
+    required: false)
+  if not has_json
+    json_dep = dependency(
+      'nlohmann_json',
+      fallback: ['nlohmann_json', 'nlohmann_json_dep'],
+      required: true)
+  endif
+endif
+
+networkd_deps = [
+  json_dep,
+  phosphor_dbus_interfaces_dep,
+  phosphor_logging_dep,
+  sdbusplus_dep,
+  dependency('sdeventplus', fallback: ['sdeventplus', 'sdeventplus_dep']),
+  dependency('stdplus', fallback: ['stdplus', 'stdplus_dep']),
+]
+
+conf_header = configure_file(
+  output: 'config.h',
+  configuration: conf_data)
+
+networkd_generated = [
+  conf_header,
+] + generated_sources
+
+networkd_includes = [
+  src_includes,
+  generated_includes,
+]
+
+networkd_lib = static_library(
+  'networkd',
+  networkd_generated,
+  'ethernet_interface.cpp',
+  'neighbor.cpp',
+  'ipaddress.cpp',
+  'netlink.cpp',
+  'network_config.cpp',
+  'network_manager.cpp',
+  'system_configuration.cpp',
+  'util.cpp',
+  'routing_table.cpp',
+  'config_parser.cpp',
+  'dhcp_configuration.cpp',
+  'vlan_interface.cpp',
+  'rtnetlink_server.cpp',
+  'dns_updater.cpp',
+  'watch.cpp',
+  implicit_include_directories: false,
+  include_directories: networkd_includes,
+  dependencies: networkd_deps)
+
+networkd_dep = declare_dependency(
+  sources: networkd_generated,
+  dependencies: networkd_deps,
+  include_directories: networkd_includes,
+  link_with: networkd_lib)
+
+executable(
+  'phosphor-network-manager',
+  'network_manager_main.cpp',
+  implicit_include_directories: false,
+  dependencies: networkd_dep,
+  install: true,
+  install_dir: get_option('bindir'))