Bela core does not compile about bela-image-builder

[giuliomoro]

Comment by giuliomoro
Monday Apr 24, 2017 at 13:02 GMT

---

the -no-pie is generated by xeno-config
you can manage to compile with

# remove dependencies from libasound:
# truncate files
echo > core/Midi.cpp
echo > core/Midi.h
# then remove `-lasound` from `Makefile`

At this point it compiles but it does not run:
it returns -EINVAL (invalid argument) when trying to do rt_task_bind or rt_task_create. Perhaps something went wrong in compiling libraries and tools ?

[giuliomoro]

Comment by giuliomoro
Monday Apr 24, 2017 at 14:32 GMT

---

/usr/xenomai/bin/latency does not depend on any of the xenomai lib (strange enough).
So I guess there may be something broken in the libxenomai build

[giuliomoro]

Comment by LBDonovan
Monday Apr 24, 2017 at 14:38 GMT

---

really? but /usr/xenomai/bin/xeno-test also runs fine...

[giuliomoro]

Comment by LBDonovan
Monday Apr 24, 2017 at 14:39 GMT

---

I did have to compile xenomai slightly oddly with '-f-no-pie' and '-no-pie' in CFLAGS and LDFLAGS, which did seem kinda wrong...

[giuliomoro]

Comment by giuliomoro
Monday Apr 24, 2017 at 16:22 GMT

---

actually none of /usr/xenomai/bin/* relies on libxenomai

[giuliomoro]

Comment by giuliomoro
Tuesday Apr 25, 2017 at 01:44 GMT

---

Got it to compile and run. I can even use the scope!

Recap:

• fix the xenomai lib (see #10)
• make sure the appropriate .dtb is loaded: add this line
  dtb=am335x-bone-bela.dtb
  somewhere in /boot/uEnv.txt
• compile with the COMPILER=gcc flag to make

[giuliomoro]

Comment by giuliomoro
Wednesday Apr 26, 2017 at 00:09 GMT

---

Boots and runs also on BBGW and BBBW.

Also hacked together a dtb for BBBW which makes the wifi module recognized. This is the diff between the stock BBBW and the BBBW that works for me (I basically diffed BBB vs BBG and tried to disable the same things (HDMI, some McASP) in the BBBW:
https://gist.github.com/giuliomoro/0b553fd15611a439c3eef6115b3e2122