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11 Replies Last post: Dec 28, 2012 11:31 PM by Pavel Fatin  
Oleksii Iepishkin Novice
Oleksii Iepishkin
121 posts since
Aug 21, 2002
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Dec 20, 2012 3:36 AM

How to configure external build with scala

I was able to configure External Build with scala plugin (v.0.7.41). Here are my steps:

 

1. Open Settings -> Compiler and select "Use external build". Close the dialog

Screen Shot 2012-12-19 at 6.24.53 PM.png

 

2. Open Project Structure -> Global Libraries and create a library with scala-library.jar and scala-compiler.jar files. Right now scala plugin has these names hardcoded and will fail if you use different names.

Screen Shot 2012-12-19 at 6.23.51 PM.png

 

3. Open Project Structure -> Facets and in every scala facet select the library created in step #2 as Compiler Library.

Screen Shot 2012-12-19 at 6.26.17 PM.png

 

4. Stop FSC if you have it running. There is and icon in the status bar. Click and select Stop.

Screen Shot 2012-12-19 at 6.28.14 PM.png

5. Build -> Make

Tags: scala, compiler, compiler, fsc, zink
Barry Kaplan Novice
Barry Kaplan
299 posts since
Sep 28, 2006
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Dec 20, 2012 9:26 PM in response to: Oleksii Iepishkin
Re: How to configure external build with scala

Not for me. When I try to compile anything I get Unknown source file errors. eg:

 

: Error: Unknown source file: /mnt/ssd/si/vimana.dev/servers/si-infra/src/main/scala/com/mongodb/ErrorInterceptingDB.scala

java.lang.RuntimeException: Unknown source file: /mnt/ssd/si/vimana.dev/servers/si-infra/src/main/scala/com/mongodb/ErrorInterceptingDB.scala

 

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Oleksii Iepishkin Novice
Oleksii Iepishkin
121 posts since
Aug 21, 2002
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Dec 20, 2012 9:49 PM in response to: Barry Kaplan
Re: How to configure external build with scala

Is that from an external hard drive?

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Barry Kaplan Novice
Barry Kaplan
299 posts since
Sep 28, 2006
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Dec 21, 2012 12:04 AM in response to: Oleksii Iepishkin
Re: How to configure external build with scala

No, its my SSD. Its internal. However the directory containing the idea project is soft linked to the SSD (on lunix).

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Oleksii Iepishkin Novice
Oleksii Iepishkin
121 posts since
Aug 21, 2002
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Dec 21, 2012 2:52 AM in response to: Barry Kaplan
Re: How to configure external build with scala

does it work when you don't have soft links in your project?

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Pavel Fatin JetBrains
Pavel Fatin
214 posts since
Nov 12, 2009
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Dec 24, 2012 11:07 PM in response to: Barry Kaplan
Re: How to configure external build with scala

The problem with links is fixed in the latest plugin builds.

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Oleksii Iepishkin Novice
Oleksii Iepishkin
121 posts since
Aug 21, 2002
Currently Being Moderated
Dec 21, 2012 12:52 AM in response to: Oleksii Iepishkin
Re: How to configure external build with scala

step #2 is not required if you use plugin >= 0.7.49

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Oleksii Iepishkin Novice
Oleksii Iepishkin
121 posts since
Aug 21, 2002
Currently Being Moderated
Dec 22, 2012 2:38 AM in response to: Oleksii Iepishkin
Re: How to configure external build with scala

FSC vs External build & Zinc

I just run full rebuild several times on a project that consits of 28 modules. Production code is mostly java with several scala files. Tests written in scala and java.

 

FSC

cold 2 min 46 sec

warm 2 min 21 sec

warm 2 min 16 sec

 

External build & Zinc

cold 2 min 2 sec

warm 1 min 27 sec

warm 1 min 25 sec

 

Conclusion

Warm external builder with zinc is 50 sec faster than warm FSC on one of our projects.
1 min 25 sec (zinc) vs 2 min 16 sec (FSC)

 

The first process in the list is external compiler with zinc
processes.png

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Oleksii Iepishkin Novice
Oleksii Iepishkin
121 posts since
Aug 21, 2002
Currently Being Moderated
Dec 24, 2012 10:20 PM in response to: Oleksii Iepishkin
Re: How to configure external build with scala

Interesting results on a single module 100% scala liftweb 2.4 project

Leda IU-123.95, plugin 0.7.61, java 6, scala 2.9.1, macosx 10.8.2

 

I did Build -> Rebuild Project several times. The first run is cold, 2nd and 3rd could be considered warm runs (VM should optimize/compile some compiler code already).

FSC

cold 1m 50 sec

warm 1m 7 sec

warm 1m 3 sec

 

External build & Zinc

cold 2 min 12 sec

warm 1 min 33 sec

warm 1 min 28 sec

warm 1 min 26 sec

 

Looks like on as single module project (only scala code) doing Rebuild is faster with FSC in IDEA.

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Alexander Podkhalyuzin JetBrains
Alexander Podkhalyuzin
893 posts since
Jun 7, 2008
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Dec 25, 2012 10:48 AM in response to: Oleksii Iepishkin
Re: How to configure external build with scala

Probably you are using "compile independent modules in parallel" option?

 

Best regards,

Alexander Podkhalyuzin.

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Oleksii Iepishkin Novice
Oleksii Iepishkin
121 posts since
Aug 21, 2002
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Dec 25, 2012 7:36 PM in response to: Alexander Podkhalyuzin
Re: How to configure external build with scala

No, I don't use "compile independent modules in parallel" option. It doesn't work in my case. When I open a project with ~ 20 java modules with tests written in scala IDEA fails to resolve dependencies between these modules correctly.

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Pavel Fatin JetBrains
Pavel Fatin
214 posts since
Nov 12, 2009
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Dec 28, 2012 11:31 PM in response to: Oleksii Iepishkin
Re: How to configure external build with scala

More info is here: http://blog.jetbrains.com/scala/2012/12/28/a-new-way-to-compile/

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