The latest NuttX merge (in pull request #68) ruins incremental builds

[LorenzMeier]

The latest NuttX merge from pull request #68 ruins incremental builds on my machine. Still investigating, but quite annoying.

[px4dev]

Can you be more specific about "ruins"? I can prepare a newer merge (this one is old enough that it's probably a good idea).

[LorenzMeier]

I haven't found the true source - make clean && make configure_px4fmu && make results in a complete re-build every time, about 30s on a SSD.

I may be mistaken, but these steps occur now every time and they may be new. After them it continues with NuttX building steps.

LN: include/arch -> arch/arm/include
LN: include/arch/board -> configs/px4fmu/include
LN: include/arch/chip -> arch/arm/include/stm32
LN: arch/arm/src/board -> configs/px4fmu/src
LN: arch/arm/src/chip -> arch/arm/src/stm32
LN: include/apps -> ../apps/include

make[2]: Nothing to be done for context'. make[2]: Nothing to be done fordepend'.
make[2]: Nothing to be done for depend'. make[2]: Nothing to be done fordepend'.
make[2]: Nothing to be done for depend'. make[2]: Nothing to be done fordepend'.
make[2]: Nothing to be done for depend'. make[2]: Nothing to be done fordepend'.
make[2]: Nothing to be done for `depend'.
CC: os_start.c
CC: os_bringup.c
CC: errno_getptr.c
CC: errno_get.c
/Users/user/src/Firmware/nuttx/sched/errno_get.c:79:5: warning: no previous prototype for 'get_errno' [-Wmissing-prototypes]
CC: errno_set.c
/Users/user/src/Firmware/nuttx/sched/errno_set.c:78:6: warning: no previous prototype for 'set_errno' [-Wmissing-prototypes]
CC: sched_garbage.c
CC: sched_setupstreams.c
/Users/user/src/Firmware/nuttx/sched/sched_setupstreams.c:73:5: warning: no previous prototype for 'sched_setupstreams' [-Wmissing-prototypes]
CC: sched_getfiles.c
CC: sched_getsockets.c
CC: sched_getstreams.c
CC: sched_setupidlefiles.c
CC: sched_setuptaskfiles.c
CC: sched_setuppthreadfiles.c
CC: sched_releasefiles.c
/Users/user/src/Firmware/nuttx/sched/sched_releasefiles.c:76:5: warning: no previous prototype for 'sched_releasefiles' [-Wmissing-prototypes]
CC: prctl.c
CC: task_create.c
CC: task_init.c
CC: task_setup.c

[px4dev]

Ok. We should kill this request and try a re-merge with more recent NuttX.