Question regarding compatibility for kdecore and KDE4_ENABLE_FINAL

David Faure faure at
Thu Jun 14 13:36:47 UTC 2012

On Tuesday 12 June 2012 20:42:28 Michael Pyne wrote:
> Hi all,
> Bug 301419 has been reported against kdelibs due to a build failure when
> KDE4_ENABLE_FINAL is used, introduced by some commits of mine to perform
> even more sanity checking in the KSharedDataCache.
> These commits use exceptions (as are already used in khtml) since they are
> actually "the right tool" in the context of where they are used, and because
> refactoring everything to use error codes everywhere (ECE) would have
> risked introducing more bugs.
> In order to minimize the changes to kdecore I only added the CMake magic to
> enable exceptions for only kshareddatacache.cpp. This doesn't work when
> KDE4_ENABLE_FINAL is used, as the project-wide CXXFLAGS are used in that
> case.
> The Mageia devs have a proposed patch [1] to enable exceptions for all of
> kdecore, which fixes the issue. Is it acceptable for me to go this route?
> The only real alternative this late in the game is to back out the sanity
> checks to the 4.8.3 status or to explicitly say that KDE4_ENABLE_FINAL will
> not work for this tarball although it worked for 4.8.3, both of which I
> consider less desirable. But I don't want to make the change if there are
> good reasons to avoid it.

The alternative would be to enable exceptions for all of kdecore only if 
enable-final is enabled.

David Faure, faure at,
Sponsored by Nokia to work on KDE, incl. KDE Frameworks 5

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