Get us a bit closer to having c++ static constructors working.

nuttx/configs/px4fmu/common/ld.script

@@ -87,6 +87,15 @@ SECTIONS
 		__errno = get_errno_ptr;
 	} > flash
 
+	/*
+	 * Init functions (static constructors and the like)
+	 */
+        .init_section : {
+                _sinit = ABSOLUTE(.);
+                *(.init_array .init_array.*)
+                _einit = ABSOLUTE(.);
+        } > flash
+
 	/*
 	 * Construction data for parameters.
 	 */

nuttx/configs/px4fmu/nsh/defconfig

@@ -179,7 +179,7 @@ CONFIG_STM32_I2C1=y
 CONFIG_STM32_I2C2=y
 CONFIG_STM32_I2C3=y
 CONFIG_STM32_CAN1=n
-CONFIG_STM32_CAN2=y
+CONFIG_STM32_CAN2=n
 CONFIG_STM32_DAC=n
 CONFIG_STM32_PWR=y
 # APB2:
@@ -542,7 +542,7 @@ CONFIG_DEBUG_I2C=n
 CONFIG_DEBUG_INPUT=n
 
 CONFIG_HAVE_CXX=y
-CONFIG_HAVE_CXXINITIALIZE=n
+CONFIG_HAVE_CXXINITIALIZE=y
 CONFIG_MM_REGIONS=2
 CONFIG_ARCH_LOWPUTC=y
 CONFIG_MSEC_PER_TICK=1