[yocto] Extended SDK installation fails during git fetch of kernel source hosted on private repo

[Gabriele Favalessa]

Hi,

I'm trying to install on ubuntu 17.04 an Extensible SDK that I have built,
and it stops with an error:

-------------------------------------------------------
sdk at sdk:~$ ./
acme-linux-glibc-x86_64-acme-image-datalogger-cortexa7hf-neon-toolchain-ext-2.5.1.sh
-D
…
+ sh -c . buildtools/environment-setup* >
/home/sdk/acme-linux_sdk/preparing_build_system.log && cd
/home/sdk/acme-linux_sdk/layers/poky && set /home/sdk/acme-linux_sdk && .
/home/sdk/acme-linux_sdk/layers/poky/oe-init-build-env
/home/sdk/acme-linux_sdk >>
/home/sdk/acme-linux_sdk/preparing_build_system.log && python
/home/sdk/acme-linux_sdk/ext-sdk-prepare.py
/home/sdk/acme-linux_sdk/preparing_build_system.log 'acme-image-datalogger
meta-extsdk-toolchain:do_populate_sysroot'
WARNING:
/home/sdk/acme-linux_sdk/layers/poky/meta-myboard/recipes-kernel/linux/
linux-imx_4.9.11.bb: Exception during build_dependencies for AUTOREV
WARNING:
/home/sdk/acme-linux_sdk/layers/poky/meta-myboard/recipes-kernel/linux/
linux-imx_4.9.11.bb: Error during finalise of
/home/sdk/acme-linux_sdk/layers/poky/meta-myboard/recipes-kernel/linux/
linux-imx_4.9.11.bb
ERROR: ExpansionError during parsing
/home/sdk/acme-linux_sdk/layers/poky/meta-myboard/recipes-kernel/linux/
linux-imx_4.9.11.bb
Traceback (most recent call last):
bb.data_smart.ExpansionError: Failure expanding variable SRCPV, expression
was ${@bb.fetch2.get_srcrev(d)} which triggered exception FetchError:
Fetcher failure: Fetch command export PSEUDO_DISABLED=1; export
GIT_SSL_CAINFO="/home/sdk/acme-linux_sdk/buildtools/sysroots/x86_64-acmesdk-linux/etc/ssl/certs/ca-certificates.crt";
export
PATH="/home/sdk/acme-linux_sdk/layers/poky/scripts:/home/sdk/acme-linux_sdk/tmp/work/myboard-acme-linux-gnueabi/linux-imx/4.9.11-r0/recipe-sysroot-native/usr/bin/arm-acme-linux-gnueabi:/home/sdk/acme-linux_sdk/tmp/work/myboard-acme-linux-gnueabi/linux-imx/4.9.11-r0/recipe-sysroot/usr/bin/crossscripts:/home/sdk/acme-linux_sdk/tmp/work/myboard-acme-linux-gnueabi/linux-imx/4.9.11-r0/recipe-sysroot-native/usr/sbin:/home/sdk/acme-linux_sdk/tmp/work/myboard-acme-linux-gnueabi/linux-imx/4.9.11-r0/recipe-sysroot-native/usr/bin:/home/sdk/acme-linux_sdk/tmp/work/myboard-acme-linux-gnueabi/linux-imx/4.9.11-r0/recipe-sysroot-native/sbin:/home/sdk/acme-linux_sdk/tmp/work/myboard-acme-linux-gnueabi/linux-imx/4.9.11-r0/recipe-sysroot-native/bin:/home/sdk/acme-linux_sdk/layers/poky/bitbake/bin:/home/sdk/acme-linux_sdk/tmp/hosttools";
export HOME="/home/sdk"; git -c core.fsyncobjectfiles=0 ls-remote ssh://
git at github.com/Acme/linux-imx.git  failed with exit code 128, output:
Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.


ERROR: SDK preparation failed: error log written to
/home/sdk/acme-linux_sdk/preparing_build_system.log
-------------------------------------------------------

I tested the failing git command `git -c ls-remote ssh://
git at github.com/Acme/linux-imx.git` directly from the command line and it
succeeds without errors. I do have the ssh key in ssh-agent, so that's not
surprise.

It looks like during the SDK installation the ssh key is needed but for
some reason the ssh-agent is not reachable (maybe the SSH_* env variables
are not propagated by the script?)

Is it unavoidable for the SDK to fetch from git during the installation? If
it is unavoidable, how can I make the script fetch from a private github
repo, given that the ssh-agent seems to be ignored?

Just out of curiosity, I copy&pasted the failing command in the shell, and
this time it ran without errors (again confirming that the ssh key is
present.)

-------------------------------------------------------
sdk at sdk:~$ sh -c . buildtools/environment-setup* >
/home/sdk/acme-linux_sdk/preparing_build_system.log && cd /home/sdk/
acme-linux_sdk/layers/poky && set /home/sdk/acme-linux_sdk && .
/home/sdk/acme-linux_sdk/layers/poky/oe-init-build-env
/home/sdk/acme-linux_sdk >>
/home/sdk/acme-linux_sdk/preparing_build_system.log && python
/home/sdk/acme-linux_sdk/ext-
sdk-prepare.py /home/sdk/acme-linux_sdk/preparing_build_system.log
'acme-image-datalogger meta-extsdk-toolchain:do_popu
late_sysroot'
Loading cache: 100%
|###################################################################################|
Time: 0:00:00
Parsing recipes: 100%
|#################################################################################|
Time: 0:01:32
Initialising tasks: 100%
|##############################################################################|
Time: 0:00:02
Checking sstate mirror object availability: 100%
|######################################################| Time: 0:00:00
Loading cache: 100%
|###################################################################################|
Time: 0:00:00
Parsing recipes: 100%
|#################################################################################|
Time: 0:00:07
Initialising tasks: 100%
|##############################################################################|
Time: 0:00:00
-------------------------------------------------------

However the resulting SDK installation seems to be broken anyway (probably
there are other steps after the one I re-run manually that where not
executed because the toplevel script stopped with an error):

-------------------------------------------------------
sdk at sdk:~/acme-linux_sdk$ source
environment-setup-cortexa7hf-neon-acme-linux-gnueabi
SDK environment now set up; additionally you may now run devtool to perform
development tasks.
Run devtool --help for further details.
ERROR: this SDK was not fully installed and needs reinstalling
-------------------------------------------------------

Thanks

Gabriele
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