update scons build file

.gitignore

@@ -4,5 +4,7 @@ package-lock.json
 *.pyc
 __pycache__
 .*.swp
+.*.swo
 libcereal*.a
+libmessaging.a
 

SConscript

@@ -1,10 +1,30 @@
 Import('env')
 
+# TODO: remove src-prefix and cereal from command string. can we set working directory?
+env.Command(["gen/c/include/c++.capnp.h", "gen/c/include/java.capnp.h"], [], "mkdir -p cereal/gen/c/include && touch $TARGETS")
+env.Command(
+  ['gen/c/car.capnp.c', 'gen/c/log.capnp.c'],
+  ['car.capnp', 'log.capnp'],
+  'capnpc $SOURCES --src-prefix=cereal -o c:cereal/gen/c/')
+env.Command(
+  ['gen/cpp/car.capnp.c++', 'gen/cpp/log.capnp.c++'],
+  ['car.capnp', 'log.capnp'],
+  'capnpc $SOURCES --src-prefix=cereal -o c++:cereal/gen/cpp/')
+
 env.Library('cereal', [
     'gen/c/car.capnp.c',
     'gen/c/log.capnp.c',
     'gen/cpp/car.capnp.c++',
     'gen/cpp/log.capnp.c++',
   ])
 
+env.Library('messaging', [
+    'messaging/messaging.cc',
+    'messaging/impl_zmq.cc',
+    'messaging/impl_msgq.cc',
+    'messaging/msgq.cc',
+  ])
+
+env.Program('messaging/bridge', ['messaging/bridge.cc'], LIBS=['messaging', 'yaml-cpp', 'zmq'])
+