[meta][EFL] Speedup incremental builds

• Component: Tools / Tests
• Status: RESOLVED WONTFIX

[Csaba Osztrogonác]

Now the incremental build takes too long if you touch only one cpp.
In my opinion it slows down the development, so we need to speed up it.

Some ideas:
- Don't run cmake, just run ninja directly --> the developer can do it, no fix needed
- Reduce always running targets to zero, simiar to GTK ( bug130075 ), now only 
  forwarding header generator runs 4 times always, and it takes ~ 5-6 seconds
- use gold linker (really faster)
- be able to disable API tests easily (87 relinking --> 9 relinking)

My quick and dirty fixes for these task reduced the incremental build from ~2 minutes to 10 seconds. 
I'm going to add subtasks to the depends on list soon and upstream fixes.

[Csaba Osztrogonác]

(In reply to comment #0)
> - Don't run cmake, just run ninja directly --> the developer can do it, no
> fix needed
We can do it automatically too, new bug report for it: bug137949
performance win: ~ 0.5 minutes

> - Reduce always running targets to zero, simiar to GTK ( bug130075 ),
> now only forwarding header generator runs 4 times always,
> and it takes ~ 5-6 > seconds
It can cause problems like mentioned here: https://bugs.webkit.org/show_bug.cgi?id=137394#c6

> - use gold linker (really faster)
new bug report for it: bug137953
performance win: ~ 1 minute

> - be able to disable API tests easily (87 relinking --> 9 relinking)
It is already possible with build-webkit --cmakeargs="-DENABLE_API_TESTS=OFF"
performance win: ~ 1 minute

If we use these 3 optimizations together, the incremental build 
takes only 10 seconds instead of 1m51s seconds.

[Michael Catanzaro]

Closing this bug because the EFL port has been removed from trunk.

If you feel this bug applies to a different upstream WebKit port and was closed in error, please either update the title and reopen the bug, or leave a comment to request this.