From 17e5d99509caafa2a0af015fe31e8bf3e557238b Mon Sep 17 00:00:00 2001
From: Gustavo Jose de Sousa <gustavo.sousa@intel.com>
Date: Wed, 13 Jan 2016 18:35:37 -0200
Subject: [PATCH] waf: allow partial builds with new mavlink as submodule

The task generator for the mavlink headers is given a name 'mavlink' and is
added as a dependency to all local static libraries, because all of them use
sources that include mavlink headers. It would be nice to have a good way to
detect sources that use mavlink headers or to declare list of libraries that
use the headers, so that the dependency could be added automatically.

Additionally, there's a minor change in syntax for the task generator: using
strings directly instead of lists.
---
 APMrover2/wscript      |  1 +
 AntennaTracker/wscript |  1 +
 ArduCopter/wscript     |  1 +
 ArduPlane/wscript      |  1 +
 wscript                | 10 +++++++---
 5 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/APMrover2/wscript b/APMrover2/wscript
index 74bcc5ba51..0ad5e7eec3 100644
--- a/APMrover2/wscript
+++ b/APMrover2/wscript
@@ -24,6 +24,7 @@ def build(bld):
             'AP_ServoRelayEvents',
             'PID',
         ],
+        use='mavlink',
     )
 
     ardupilotwaf.program(
diff --git a/AntennaTracker/wscript b/AntennaTracker/wscript
index 330ea5e52b..cee72049f2 100644
--- a/AntennaTracker/wscript
+++ b/AntennaTracker/wscript
@@ -12,6 +12,7 @@ def build(bld):
         libraries=ardupilotwaf.COMMON_VEHICLE_DEPENDENT_LIBRARIES + [
             'PID',
         ],
+        use='mavlink',
     )
 
     ardupilotwaf.program(
diff --git a/ArduCopter/wscript b/ArduCopter/wscript
index 037716ab1e..b97621dd94 100644
--- a/ArduCopter/wscript
+++ b/ArduCopter/wscript
@@ -33,6 +33,7 @@ def build(bld):
             'AP_Relay',
             'AP_ServoRelayEvents',
         ],
+        use='mavlink',
     )
 
     ardupilotwaf.program(
diff --git a/ArduPlane/wscript b/ArduPlane/wscript
index 1aacbdfe55..42ae4f4285 100644
--- a/ArduPlane/wscript
+++ b/ArduPlane/wscript
@@ -34,6 +34,7 @@ def build(bld):
             'AP_Motors',
             'AC_PID'
         ],
+        use='mavlink',
     )
 
     ardupilotwaf.program(
diff --git a/wscript b/wscript
index c1e02ce668..cf6ab01cb9 100644
--- a/wscript
+++ b/wscript
@@ -120,9 +120,12 @@ def list_boards(ctx):
 def build(bld):
 
     #generate mavlink headers
-    bld(features=['mavgen'],
-        source=['modules/mavlink/message_definitions/v1.0/ardupilotmega.xml'],
-        target=['libraries/GCS_MAVLink/include/mavlink/v1.0/'])
+    bld(
+        features='mavgen',
+        source='modules/mavlink/message_definitions/v1.0/ardupilotmega.xml',
+        target='libraries/GCS_MAVLink/include/mavlink/v1.0/',
+        name='mavlink',
+    )
 
     # NOTE: Static library with vehicle set to UNKNOWN, shared by all
     # the tools and examples. This is the first step until the
@@ -133,6 +136,7 @@ def build(bld):
         name='ap',
         vehicle='UNKNOWN',
         libraries=ardupilotwaf.get_all_libraries(bld),
+        use='mavlink',
     )
     # TODO: Currently each vehicle also generate its own copy of the
     # libraries. Fix this, or at least reduce the amount of