Compiling V8 JavaScript engine faster

Question

I have a project where I'm using the V8 JavaScript engine from Google. I also use Travis CI to build and deploy my project. The build often exceeds the maximum time limit (~45 min) and fails because of this. I have done the following to speed up the compile time for V8 (which made some difference):

Don't build tests
Disabled support for i18n

How could I speed up the compile time for V8 even more?

Can't you just use it as a library? Are you continually modifying it so you have to rebuild it? — Koos Gadellaa
– Koos Gadellaa, Commented Sep 28, 2016 at 20:45
I'm just using it as a library. How can I get the precompiled libs for v8? (I'm compiling for os x). — jnsmalm
– jnsmalm, Commented Sep 28, 2016 at 20:49
If you have the source, can't you create libraries yourself? Compile them to a library beforehand, and include them in your project instead? I don't program C++, so I have no clue to create them, but google tells me en.wikipedia.org/wiki/… -- sorry I can't help more. — Koos Gadellaa
– Koos Gadellaa, Commented Sep 28, 2016 at 21:46

pmed · Accepted Answer · 2016-09-30 04:43:14Z

1

I use V8 binary package from a PPA. in my .travis.yml file. It looks like this:

before_install:
  - sudo add-apt-repository ppa:pinepain/libv8-5.2 -y
  - sudo apt-get update -q
  - sudo apt-get install libv8-dev -y

answered Sep 30, 2016 at 4:43

pmed

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2 Comments

jnsmalm Over a year ago

That looks really good! I want v8 version 4.9.385.33, can't find it there.

pmed Over a year ago

You can also see at github.com/pmed/v8pp/blob/master/build-v8.sh script. I used it before to build only V8 libraries on Travis, but haven't touch that script since switching to PPA.

jnsmalm · Accepted Answer · 2016-09-30 18:32:13Z

1

I ended up using the built-in caching features in Travis CI. Time to compile went down from 45 min to 13 min. Happy! Thanks to the comments that pointed me in the right direction.

answered Sep 30, 2016 at 18:32

jnsmalm

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1 Comment

Melab Over a year ago

Care to explain exactly how you did it?

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