ROOT master segfaults inside ubuntu18 docker container

cburgard · October 24, 2019, 10:08am

I’m trying to build a container with ROOT on top of ubuntu18. For this, I forked the root-docker project and played with the package list in an attempt to make it work:

github.com

cburgard/root-docker/blob/master/ubuntu/Dockerfile

FROM ubuntu:18.10

COPY packages packages

RUN apt-get update -qq \
 && ln -sf /usr/share/zoneinfo/UTC /etc/localtime \
 && apt-get -y install $(cat packages) \
 && localedef -i en_US -f UTF-8 en_US.UTF-8 \
 && rm -rf /packages /var/lib/apt/lists/*

RUN cd /tmp \
 && git clone https://github.com/root-project/root /usr/src/root \
 && cmake /usr/src/root \
	-Dall=ON \
	-Dcxx14=ON \
	-Dfail-on-missing=OFF \
  -Druntime_cxxmodules=OFF \
	-Dgnuinstall=ON \
	-Drpath=ON \
  -Droofit=ON \

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It used to work, but with the current master, I immediately get a segfault when starting root inside the container I built. the segfault comes from here:

ROOT::FoundationUtils::GetRootSys[abi:cxx11]()

closer inspection reveals that $ROOTSYS is not set. explicitly sourcing “thisroot.sh” fixes this of course, but then this happens:

ERROR in cling::CIFactory::createCI():
  resource directory /usr/local/etc//cling/lib/clang/5.0.0 not found!
error: unable to read PCH file /usr/local/etc//allDict.cxx.pch: 'No such file or directory'
fatal error: PCH file '/usr/local/etc//allDict.cxx.pch' not found: module file not found

I would be happy for any pointers/ideas where I messed up.

I didn’t have that earlier, only thing I (consciously) changed was switching from some older commit to the latest ROOT master…

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ROOT Version: current master
Platform: ubuntu18
Compiler: Not Provided

vvassilev · October 25, 2019, 12:49am

Can you send the crash and also attach your CMakeCache.txt file located in your build directory?

amadio · October 25, 2019, 9:10am

The problem is that the path to the PCH is hard-coded as etc/allDict.pch.cxx, and with gnuinstall=ON the sys config dir is etc/root, not etc/.

cburgard · October 25, 2019, 5:45pm

You can easily reproduce this problem like this:

git clone git@github.com:cburgard/root-docker.git
cd root-docker/ubuntu
docker build .

vvassilev · October 25, 2019, 7:07pm

Does https://github.com/root-project/root/pull/4582 fix it for you?

amadio · November 18, 2019, 10:08am

The pull request above does not fix the issue.
I’ve filed ROOT-10452 for this, as ROOT cannot be released before a fix for this is in place.