hmm we could be lazy and add a stub glibc package that'd have the same metadata.xml that'd get emerged into the sysroot.  but we'd have to hand maintain the version in the ebuilds.

we have install_toolchain which takes care of syncing all the relevant packages & versions when setting up a new sysroot.  we could have it inject details into a special location that the chromite licensing processing would pick up.

none of these are great options :/.

yunlian, could you find the easiest way to do this? 

In the ~/trunk/chromite/licensing/licenses command, it runs

  /build/terra/build/bin/emerge '--with-bdeps=y' --usepkgonly --emptytree --pretend '--color=n' virtual/target-os

to find out the packages installed for the target, and glibc is not in the list.
Is it because glibc is in
/build/terra/etc/portage/profile/package.provided ?

more or less.  we'll need to manually account for all packages we inject via src/scripts/install_toolchain.

Any updates on this?

yunlian, vapier,

I looked inside src/scripts/install_toolchain, it seems that this script will inject version info about gcc + glibc + go into /build/terra/etc/portage/profile/package.provided.
But I can only find the code installing glibc, not gcc/golang. Is that how it's supposed to be? If so, which script will install gcc and go? Thanks!

we don't install gcc or go into the target

for gcc, we have the gcc-libs package.  go gets statically linked.

yunlian, vapier,

I made a change in cros_extract_deps to make it pick up SDK packages' CPEs. I manually tested it and it looks fine. Now I'm running trybot on it with lakitu-incremental. Could you suggest a few other config I should run? Thanks!

https://chromium-review.googlesource.com/c/chromiumos/chromite/+/669947
https://uberchromegw.corp.google.com/i/chromiumos.tryserver/builders/incremental/builds/618

update: trybot succeeded on lakitu-incremental. Found glibc CPE in artifact.

link:
https://uberchromegw.corp.google.com/i/chromiumos.tryserver/builders/incremental/builds/618

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/chromite/+/656f993d5f47f969cf8ca7539304518d82af9761

commit 656f993d5f47f969cf8ca7539304518d82af9761
Author: Xuewei Zhang <xueweiz@google.com>
Date: Tue Sep 26 20:36:17 2017

Track CPEs for SDK packages in package.provided

BUG=b:62104917,  chromium:726911 
TEST=Trybot on lakitu-incremental passed. Found CPE of glibc in artifacts.

Change-Id: I06b89cd18705c2ec1894a9c304c21e9e1ca52b4f
Reviewed-on: https://chromium-review.googlesource.com/669947
Commit-Ready: Xuewei Zhang <xueweiz@google.com>
Tested-by: Xuewei Zhang <xueweiz@google.com>
Reviewed-by: Mike Frysinger <vapier@chromium.org>

[modify] https://crrev.com/656f993d5f47f969cf8ca7539304518d82af9761/scripts/cros_extract_deps.py

i believe this is resolved now