Bug 215064 – Fix and further refine makefile rule for WebKit messages generated files

• Component: Tools / Tests
• Status: RESOLVED FIXED

[Darin Adler]

Fix and further refine makefile rule for WebKit messages generated files

[Darin Adler]

Created attachment 405794 [details]
Patch

[Sam Weinig]

I am surprised and confused to see this work on the bots. From my research, I didn't think the "grouped targets" feature came to make until make 4.3 (https://lwn.net/Articles/810071/), and at least on my local machine, make is stuck for macOS back on 3.81. What's the magic here?

[Darin Adler]

Yes, the make on my computer is 3.81 yet this did work.

[Darin Adler]

If we can’t use grouped targets, then at least we have to fix the spelling of "addsuffix".

[Darin Adler]

Maybe grouped targets was undocumented in older versions of make?

[Darin Adler]

Yes, that article says pretty clearly that grouped targets is new in make 4.3!

[Darin Adler]

OK, tested locally and it seems that the syntax doesn't really work.

[Darin Adler]

The make run succeeds, but it doesn't run the rule in all the cases I would expect.

[Darin Adler]

Comment on attachment 405794 [details]
Patch

I think this patch just re-introduces the bug where the rule is run multiple times.

[Darin Adler]

Created attachment 405798 [details]
Patch

[Darin Adler]

Thanks, Sam, for calling my attention to that!

Should be fine now.

[Sam Weinig]

Realizing that we are forever stuck on make 3.81 a few weeks ago made me wonder if we should re-asses the use of make in WebKit (at least with regard to derived sources). 

I don't recall the reason for it being introduced, though I have heard it mentioned that it was maybe to do with deficiencies in Xcode's ability to deal with intermediate files, or maybe to share between Xcode and VisualStudio (really I should go look at svn history). Regardless of the original intent though, it's always a good idea to check assumptions every once in a while and make sure they still make sense.

[EWS]

Committed r265181: <https://trac.webkit.org/changeset/265181>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 405798 [details].

[Radar WebKit Bug Importer]

<rdar://problem/66433599>

[Darin Adler]

I seem to recall that I originally started using make with the goal of sharing those rules between all build systems. Was really disappointed when the file was replicated in CMake instead of being used there.