[Webkit-unassigned] [Bug 252679] New: [CMake] Only enable -gsplit-dwarf in Debug or RelWithDebInfo builds

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=252679

            Bug ID: 252679
           Summary: [CMake] Only enable -gsplit-dwarf in Debug or
                    RelWithDebInfo builds
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKitGTK
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mcatanzaro at gnome.org
                CC: bugs-noreply at webkitgtk.org, calvaris at igalia.com,
                    philn at igalia.com

Let's follow this rule: if build type is Debug or RelWithDebInfo, then be helpful and enable debug fission automatically so that we have optimal defaults for developers. But if build type is anything else, then the user must be adding -g manually for debug fission to be useful. If user is manually editing compiler flags, trust that the user knows best and will add -gsplit-dwarf is desired to avoid breaking distro debuginfo systems.

You can also use -DDEBUG_FISSION=ON/OFF to override WebKit's defaults if this guesses wrong, and I almost went with this solution downstream, but (a) this will probably confuse lots of distros or result in broken debuginfo generation, and (b) it's also just nicer to simplify the CMake file.

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