spresence build fails on RPi

[jerryneedell]

I've been testing building CP on various platforms -- the current master builds fine for all BSPs on Ubuntu Linux and on MacOS. On my Raspberry Pi 4 all of the boards build OK except for the spresense - it fails with:

pi@gjnpi4desk:~/projects/circuitpython/ports/cxd56 $ make BOARD=spresense
Use make V=1, make V=2 or set BUILD_VERBOSE similarly in your environment to increase build verbosity.
GEN build-spresense/genhdr/moduledefs.h
QSTR updated
AR build-spresense/libmpy.a
LD build-spresense/firmware.elf
Creating build-spresense/firmware.spk
spresense-exported-sdk/sdk/tools/linux/mkspk -c 2 build-spresense/firmware.elf nuttx build-spresense/firmware.spk
spresense-exported-sdk/sdk/tools/linux/mkspk: 1: spresense-exported-sdk/sdk/tools/linux/mkspk: Syntax error: "(" unexpected
make: *** [Makefile:205: build-spresense/firmware.spk] Error 2

I've just started looking into to it , but wanted to post this to see if anyone else has seen this or has any suggestions ...

[jerryneedell]

ah -- this may be the problem:

pi@gjnpi4desk:~/projects/circuitpython/ports/cxd56/spresense-exported-sdk/sdk/tools/linux $ ./mkspk 
-bash: ./mkspk: cannot execute binary file: Exec format error

on Intel (x86_64) Ubuntu or MacOS I get

[Jerry-desktop-mini-10:sdk/tools/macos] jerryneedell% ./mkspk 
./mkspk [-c <number>] [-b] [-m mode] [-v version] <filename> <save name> [<output file>]

on Ubuntu running on a Raspberry Pi, I get the same failure so it just appears to be that the mkspk and probably the other sdk tools are not built for arm ...yet

[jepler]

Based on the information available, this is an issue to pursue upstream with https://github.com/sonydevworld/spresense-exported-sdk -- a binary executable program included in spresense-exported-sdk is only for "x86_64" linux systems, so it won't work on ARM based system such as rpi:

$ file ./sdk/tools/linux/mkspk
./sdk/tools/linux/mkspk: ELF 64-bit LSB executable, x86-64, version 1 (SYSV),
 dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.32,
 BuildID[sha1]=0df49f2269405eaa8872ff7244d485c45f702703, not stripped

[tannewt]

@kamtom480 Any suggestion?

[kamtom480]

Unfortunately, currently mkspk on ARM is not supported. In the next Spresense SDK release, it will be possible to support this. When it is released, I will prepare PR.

[jerryneedell]

tested after #2507 -- builds OK on Raspberry Pi 4 - I don't have a board to test the actual image, but the build completes now without error.
Thank you!