Update to amazonlinux:2.0.20200722.0-with-sources to build Chrome 85

[skunkworker]

Update AMI to amazonlinux:2.0.20200406.0
Changed the git clone to be a shallow clone on the $RELEASE tag, making the download much quicker.

I was able to successfully build chrome 83.0.4103.61 with this branch.

[teledyn]

Thanks for contributing this!

I do encounter two problems trying to just build the headless-chrome on an AWS Linux 2 EC2 instance using build/build.sh as per the readme:

1. the gn executable in linux64/ is not found -- I attempted a workaround by inserting a line just before that installs the binary and gn.py from https://github.com/zengcan/gn-bin and it appears to carry one until ...
2. the compile of ../../headless/public/util/fontconfig.cc because the CHECK macros are not defined

Any guesses why these two would be missing?

[skunkworker]

Thanks for contributing this!

I do encounter two problems trying to just build the headless-chrome on an AWS Linux 2 EC2 instance using build/build.sh as per the readme:

1. the gn executable in linux64/ is not found -- I attempted a workaround by inserting a line just before that installs the binary and gn.py from https://github.com/zengcan/gn-bin and it appears to carry one until ...
2. the compile of ../../headless/public/util/fontconfig.cc because the CHECK macros are not defined

Any guesses why these two would be missing?

Hi @teledyn, I have a branch I'm working on that fixes those two issues and compiles successfully. At the moment I'm running into issues with chromedriver, but the only thing I did different to get it to compile was update the amazon linux ami docker image. See my most recent commit on this branch.

Once I get the chromedriver new session bug fixed I'll post my findings here.

[skunkworker]

As an update, this branch works and compiles correctly.
For some reason using the --single-process flag will cause chromedriver + chrome to hang on trying to get a new session. Otherwise this works as expected on Chrome 85 with no issues so far.

[adieuadieu]

Hi @skunkworker — Thank you for your effort!

[kennedy]

can we have this merged?