We want to inform the user when they have upgraded their Xcode version
and hence have a new SDK version, which requires a complete rebuild.
Explicit changes to the Xcode selection (be it via xcode-select or
$DEVELOPER_DIR) do not affect the existing build directory, so we must
record the Xcode selection inside the build to avoid false triggering.
Change-Id: I7d13da1232226712a4951e8a360cf4b634c6fa2f
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Otherwise the SDK upgrade (or downgrade) may subtly and silently affect
the resulting binary, or if it results in build breaks, the user won't
know why.
We limit it to applications for now, as that's the point where it's
most important to catch the SDK upgrade, but technically we should
also do this for intermediate libraries. Doing it for everything
will likely incur a performance cost, so we skip that for now.
Change-Id: I8a0604aad8b1e9fba99848ab8ab031c07fd50dc4
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
