From 01c4cde14fe42b90cebee681bddd27945f109731 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <tridge@samba.org>
Date: Fri, 30 Mar 2012 13:23:18 +1100
Subject: [PATCH] AP_Declination: fixed build under SITL

---
 libraries/AP_Declination/AP_Declination.cpp   |  4 ++--
 .../AP_Declination_test.pde                   | 19 ++++++++++++++++++-
 .../examples/AP_Declination_test/Makefile     |  3 +++
 3 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/libraries/AP_Declination/AP_Declination.cpp b/libraries/AP_Declination/AP_Declination.cpp
index 2dc94a000b..125bc30c1c 100644
--- a/libraries/AP_Declination/AP_Declination.cpp
+++ b/libraries/AP_Declination/AP_Declination.cpp
@@ -194,7 +194,7 @@ AP_Declination::get_lookup_value(uint8_t x, uint8_t y)
 	for(i = start_index; i < (start_index + declination_keys[1][x]) && current_virtual_index <= y; i++){
 
 		// Pull out the row_value struct
-		memcpy_P((void*) &stval, (void *) &declination_values[i], sizeof(struct row_value));
+		memcpy_P((void*) &stval, (const prog_char *)&declination_values[i], sizeof(struct row_value));
 
 		// Pull the first offset and determine sign
 		offset = stval.abs_offset;
@@ -208,4 +208,4 @@ AP_Declination::get_lookup_value(uint8_t x, uint8_t y)
 		}
 	}
 	return val;
-}
\ No newline at end of file
+}
diff --git a/libraries/AP_Declination/examples/AP_Declination_test/AP_Declination_test.pde b/libraries/AP_Declination/examples/AP_Declination_test/AP_Declination_test.pde
index fc2d3838ef..ff46cd09ab 100644
--- a/libraries/AP_Declination/examples/AP_Declination_test/AP_Declination_test.pde
+++ b/libraries/AP_Declination/examples/AP_Declination_test/AP_Declination_test.pde
@@ -5,6 +5,23 @@
 #include <AP_Common.h>
 #include <AP_Math.h>
 #include <AP_Declination.h>
+#include <Filter.h>
+
+#ifdef DESKTOP_BUILD
+// all of this is needed to build with SITL
+#include <DataFlash.h>
+#include <APM_RC.h>
+#include <GCS_MAVLink.h>
+#include <Arduino_Mega_ISR_Registry.h>
+#include <AP_PeriodicProcess.h>
+#include <AP_ADC.h>
+#include <AP_Baro.h>
+#include <AP_Compass.h>
+#include <AP_GPS.h>
+Arduino_Mega_ISR_Registry isr_registry;
+AP_Baro_BMP085_HIL      barometer;
+AP_Compass_HIL     compass;
+#endif
 
 FastSerialPort(Serial, 0);
 
@@ -108,4 +125,4 @@ float get_declination(float lat, float lon)
 	decmin = (lon - lonmin) / 5 * (decSE - decSW) + decSW;
 	decmax = (lon - lonmin) / 5 * (decNE - decNW) + decNW;
 	return   (lat - latmin) / 5 * (decmax - decmin) + decmin;
-}
\ No newline at end of file
+}
diff --git a/libraries/AP_Declination/examples/AP_Declination_test/Makefile b/libraries/AP_Declination/examples/AP_Declination_test/Makefile
index d1f40fd90f..fcdc8ff8fe 100644
--- a/libraries/AP_Declination/examples/AP_Declination_test/Makefile
+++ b/libraries/AP_Declination/examples/AP_Declination_test/Makefile
@@ -1 +1,4 @@
 include ../../../AP_Common/Arduino.mk
+
+sitl:
+	make -f ../../../../libraries/Desktop/Desktop.mk