[Webkit-unassigned] [Bug 206738] New: [CMake] Provide a “tooling build” configuration option

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=206738

            Bug ID: 206738
           Summary: [CMake] Provide a “tooling build” configuration option
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CMake
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: aperez at igalia.com

I am splitting this out from bug #206737 because I think it will
be uncontroversial. The idea is to have a build option which does
whatever is needed to make standard tools work with a compilation
database (a.k.a. that “compile_commands.json” file).

At least such an option should:

 - Set CMAKE_EXPORT_COMPILE_COMMANDS=ON (yay!)
 - Set ENABLE_DEVELOPER_BUILD=ON (of course!)
 - Set ENABLE_UNIFIED_BUILDS=OFF (because unified builds play
   badly with many third-party tools, ouch!)
 - Define a target which can be used to generate all the needed
   derived sources and copy forwarding headers, so it's possible
   to run “ninja tooling-prepare“ (or similar).

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