Bug 132599 – [CMake][GTK] CMake Error: Could not create named generator Eclipse CDT4 - Ninja

• Component: Tools / Tests
• Status: RESOLVED FIXED

[Nikos Andronikos]

Running the command line:
Tools/Scripts/build-webkit --gtk

Yields the following error:
CMake Error: Could not create named generator "Eclipse CDT4 - Ninja"
Not searching for unused variables given on the command line.


The problem seems to be related to this bug fix:
https://bugs.webkit.org/show_bug.cgi?id=132190

I have ninja installed and eclipse installed but cmake does not
list the 'Eclipse CDT4 - Ninja' or the 'Ninja' generators (see attachment
cmake_help_output.txt of output for "cmake --help" command).

[Nikos Andronikos]

Created attachment 230885 [details]
cmake help output

[Nikos Andronikos]

Created attachment 230886 [details]
Patch

[Nikos Andronikos]

(In reply to comment #2)
> Created an attachment (id=230886) [details]
> Patch

I'm still getting my head around the build systems and such.

Does the red on win indicate this patch broke the build? Or just that the build is broken (and this could have been caused by some other patch).

I'm not currently able to reproduce the win breakage.

[Martin Robinson]

Comment on attachment 230886 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=230886&action=review

One issue here. It looks like the Windows failure is unrelated.

> Tools/Scripts/webkitdirs.pm:1818
> -    my $willUseNinja = isGtk() && canUseNinja();
> +    my $willUseNinja = isGtk() && canUseNinja() && canUseNinjaGenerator();

It looks like you shouldn't change this line, because if Eclipse support is not available it should fall back to the typical ninja generator.

[Nikos Andronikos]

(In reply to comment #4)
> (From update of attachment 230886 [details])
> View in context: https://bugs.webkit.org/attachment.cgi?id=230886&action=review
> 
> One issue here. It looks like the Windows failure is unrelated.
> 
> > Tools/Scripts/webkitdirs.pm:1818
> > -    my $willUseNinja = isGtk() && canUseNinja();
> > +    my $willUseNinja = isGtk() && canUseNinja() && canUseNinjaGenerator();
> 
> It looks like you shouldn't change this line, because if Eclipse support is not available it should fall back to the typical ninja generator.

There are 2 functions:
1. canUseNinjaGenerator
2. canUseEclipseNinjaGenerator

canUseNinjaGenerator performs an extra check to ensure that a Ninja generator is installed - so this is extra error checking to make sure that cmake supports the Ninja generator which we know is installed (from the canUseNinja check)

[Nikos Andronikos]

Created attachment 238231 [details]
Patch

[Michael Catanzaro]

Comment on attachment 238231 [details]
Patch

Sorry this went unreviewed for so long.

This looks fine to me. If the patch still applies on trunk and works, please set cq? to request commit.

[Nikos Andronikos]

Created attachment 268668 [details]
Patch

[Nikos Andronikos]

Comment on attachment 268668 [details]
Patch

Thanks for the review - I've reapplied the patch to the trunk and updated the style to match the current code.

[Michael Catanzaro]

Comment on attachment 268668 [details]
Patch

Unfortunately what I did not realize the first time I reviewed this, is that we can't use grep, because these functions need to work on Windows without Cygwin. The Windows EWS is passing because (a) it currently has Cygwin installed, and (b) it probably doesn't have Ninja installed. So you should try rewriting this without grep. Sorry. :(

[Nikos Andronikos]

Created attachment 268941 [details]
Patch

[Michael Catanzaro]

Comment on attachment 268941 [details]
Patch

Thanks!

[WebKit Commit Bot]

Comment on attachment 268941 [details]
Patch

Clearing flags on attachment: 268941

Committed r195057: <http://trac.webkit.org/changeset/195057>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.