This disables the following modules to save flash:
- mpu9250 driver because the MPU9250 is rarely used on Pixhawks
- Snapdragon RC PWM passthrough which is rarely used and definitely a
special/custom configuration. Also, it will soon be obsolete with the
upcoming PWM support on Snapdragon.
These are some changes that I needed to compile
most of the unsupported targets.
After this all (make list_config_targets) compile
for me except: posix_eagle_muorb, posix_sdflight_default
and qurt_eagle_legacy_driver_default.
While the config_sitl_rcS_dir is used more extensively (and actually
only depending on the base cmake target), the variables
config_sitl_viewer and config_sitl_debugger are just used to be
passed on for the run_config target; config_sitl_debugger is even
*always* 'disable'. Hence, they don't really need to be cached
(INTERNAL or not). Before this patch FILEPATH was used instead
of INTERNAL, but I doubt very much that that was intended. That
only makes sense when cmake-gui would be used and then would pop-up
a file browser to let the user pick a file (while really they
need to pick a directory, so it's wrong either way).
The ONLY reason caching would be used is when a developer edits
the build_posix_sitl_*/CMakeCache.txt files, changes these values
and then runs cmake in the build directory again, now overriding
the values intended here. Nevertheless, I left in the caching.
The main change in this commit (that theoretically has no real effect)
is that I removed the duplicated maintenance of
posix_sitl_broadcast.cmake. When that file was added, it was an
exact copy of posix_sitl_default.cmake and is since not always
maintained to remain the same. I don't think that difference is
in anyway relevant for the broadcasting part though.
Note that I think that something like that also holds for the
posix_sitl_replay.cmake; it would be a lot better - maintenance-wise
- when it was just derived from (or the same as) posix_sitl_default,
I think.
Over time I made a few changes unrelated to what I'm really working on.
These changes are hereby committed first. The bug fixes are related to
what I'm doing in that I need them to be fixed for future commits.
Tools/sitl_run.sh: rename label to rcS_dir and fix usage help.
cmake/common/px4_base.cmake: Remove the check on OUT_UNPARSED_ARGUMENTS,
and a few typos and indentation issues.
cmake/configs/posix_sitl_replay.cmake: Set the correct variable
(config_sitl_rcS_dir) to the correct directory.
cmake/nuttx/px4_impl_nuttx.cmake: typos and indentation issues,
and removal of a redundant FORCE (INTERNAL implies FORCE).
cmake/posix/px4_impl_posix.cmake: typos and indentation issues.
cmake/qurt/px4_impl_qurt.cmake: typos and indentation issues.
src/modules/mavlink/mavlink_ftp.cpp : possible strict-aliasing breakage.
NOTES
The second argument passed to sitl_run.sh is the value of
config_sitl_rcS_dir. This fact is missing from the usage help.
I renamed 'label' to 'rcS_dir' to better reflect this.
Also, for the 'replay' config the wrong variable was set causing
the call to sitl_run.sh to skip an argument and fail (ie the
debugger was passed as rcS_dir and so on).
The check on OUT_UNPARSED_ARGUMENTS in px4_parse_function_args
basically causes every passed IN variable to be REQUIRED and is
therefore a bug. The test for the presence of the REQUIRED arguments
follows directly after and is sufficient for this job. This bug went
unnoticed because currently every argument to OPTIONS, ONE_VALUE,
and MULTI_VALUE is actually passed to the function(s) calling
px4_parse_function_args (them being REQUIRED or not).
The changes in mavlink_ftp.cpp are to avoid a possible aliasing bug
and (mostly) to avoid the compiler warning/error: dereferencing type-
punned pointer will break strict-aliasing rules [-Werror=strict-aliasing].
Julian Oes