Update to latest Eigen to get rid of compiler warnings

[DonLakeFlyer]

Related to #8061

[MatejFranceskin]

I still get a lot of these:

/home/matej/src/upstream-qgroundcontrol/libs/mavlink/include/mavlink/v2.0/ardupilotmega/../common/./mavlink_msg_smart_battery_status.h: In function ‘uint16_t mavlink_msg_smart_battery_status_encode_chan(uint8_t, uint8_t, uint8_t, mavlink_message_t*, const mavlink_smart_battery_status_t*)’:
/home/matej/src/upstream-qgroundcontrol/libs/mavlink/include/mavlink/v2.0/ardupilotmega/../common/./mavlink_msg_smart_battery_status.h:178:357: warning: taking address of packed member of ‘__mavlink_smart_battery_status_t’ may result in an unaligned pointer value [-Waddress-of-packed-member]
178 | return mavlink_msg_smart_battery_status_pack_chan(system_id, component_id, chan, msg, smart_battery_status->id, smart_battery_status->capacity_remaining, smart_battery_status->current, smart_battery_status->temperature, smart_battery_status->fault_bitmask, smart_battery_status->time_remaining, smart_battery_status->cell_offset, smart_battery_status->voltages);
| ~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
In file included from /home/matej/src/upstream-qgroundcontrol/libs/mavlink/include/mavlink/v2.0/ardupilotmega/../common/common.h:1630,
from /home/matej/src/upstream-qgroundcontrol/libs/mavlink/include/mavlink/v2.0/ardupilotmega/ardupilotmega.h:953,
from /home/matej/src/upstream-qgroundcontrol/libs/mavlink/include/mavlink/v2.0/ardupilotmega/mavlink.h:32,
from /home/matej/src/upstream-qgroundcontrol/src/comm/QGCMAVLink.h:24,
from /home/matej/src/upstream-qgroundcontrol/src/qgcunittest/UnitTest.h:24,
from /home/matej/src/upstream-qgroundcontrol/src/FactSystem/FactSystemTestBase.h:17,
from /home/matej/src/upstream-qgroundcontrol/src/FactSystem/FactSystemTestBase.cc:14:
/home/matej/src/upstream-qgroundcontrol/libs/mavlink/include/mavlink/v2.0/ardupilotmega/../common/./mavlink_msg_actuator_output_status.h: In function ‘uint16_t mavlink_msg_actuator_output_status_encode(uint8_t, uint8_t, mavlink_message_t*, const mavlink_actuator_output_status_t*)’:
/home/matej/src/upstream-qgroundcontrol/libs/mavlink/include/mavlink/v2.0/ardupilotmega/../common/./mavlink_msg_actuator_output_status.h:119:173: warning: taking address of packed member of ‘__mavlink_actuator_output_status_t’ may result in an unaligned pointer value [-Waddress-of-packed-member]
119 | return mavlink_msg_actuator_output_status_pack(system_id, component_id, msg, actuator_output_status->time_usec, actuator_output_status->active, actuator_output_status->actuator);
| ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
/home/matej/src/upstream-qgroundcontrol/libs/mavlink/include/mavlink/v2.0/ardupilotmega/../common/./mavlink_msg_actuator_output_status.h: In function ‘uint16_t mavlink_msg_actuator_output_status_encode_chan(uint8_t, uint8_t, uint8_t, mavlink_message_t*, const mavlink_actuator_output_status_t*)’:
/home/matej/src/upstream-qgroundcontrol/libs/mavlink/include/mavlink/v2.0/ardupilotmega/../common/./mavlink_msg_actuator_output_status.h:133:184: warning: taking address of packed member of ‘__mavlink_actuator_output_status_t’ may result in an unaligned pointer value [-Waddress-of-packed-member]
133 | return mavlink_msg_actuator_output_status_pack_chan(system_id, component_id, chan, msg, actuator_output_status->time_usec, actuator_output_status->active, actuator_output_status->actuator);
|
And these:
compiling /home/matej/src/upstream-qgroundcontrol/src/QtLocationPlugin/QGeoCodingManagerEngineQGC.cpp
In file included from /home/matej/Qt/5.12.6/gcc_64/include/QtCore/QVariant:1,
from /home/matej/Qt/5.12.6/gcc_64/include/QtLocation/qgeoserviceprovider.h:40,
from /home/matej/Qt/5.12.6/gcc_64/include/QtLocation/QGeoServiceProvider:1,
from /home/matej/src/upstream-qgroundcontrol/src/QtLocationPlugin/QGeoCodingManagerEngineQGC.h:50,
from /home/matej/src/upstream-qgroundcontrol/src/QtLocationPlugin/QGeoCodingManagerEngineQGC.cpp:47:
/home/matej/Qt/5.12.6/gcc_64/include/QtCore/qvariant.h: In constructor ‘QVariant::QVariant(QVariant&&)’:
/home/matej/Qt/5.12.6/gcc_64/include/QtCore/qvariant.h:273:25: warning: implicitly-declared ‘QVariant::Private& QVariant::Private::operator=(const QVariant::Private&)’ is deprecated [-Wdeprecated-copy]
273 | { other.d = Private(); }
| ^
/home/matej/Qt/5.12.6/gcc_64/include/QtCore/qvariant.h:399:16: note: because ‘QVariant::Private’ has user-provided ‘QVariant::Private::Private(const QVariant::Private&)’
399 | inline Private(const Private &other) Q_DECL_NOTHROW
| ^~~~~~~

[DonLakeFlyer]

Those aren't Eigen related?

[dagar]

Could this be carried as a submodule?