72a1e55472d0780996cc3843039b00427b5a420b (qt/qtbase/dev) 331b8dbb5961fb258596b34053402c14f2f81537 (qt/qtbase/6.2)
See comment at https://codereview.qt-project.org/c/qt/qtbase/+/363411/3/.cmake.conf#24
When configuring qtbase from a scratch with CMake 3.21.1 with the linked change
CMake Error at cmake/QtPublicTargetHelpers.cmake:259 (set_property): Attempt to promote imported target "PkgConfig::XRender" to global scope (by setting IMPORTED_GLOBAL) which is not built in this directory. Call Stack (most recent call first): cmake/QtFindPackageHelpers.cmake:174 (__qt_internal_promote_target_to_global) src/gui/configure.cmake:129 (qt_find_package) cmake/QtModuleHelpers.cmake:516 (include) src/gui/CMakeLists.txt:53 (qt_internal_add_module)
this is related to XRender_FOUND suddenly not being set.
With a previously configured (with 3.16) build without the linked change, if i apply the linked change and configure with 3.21.1, i also get
ERROR: Feature "libudev": Forcing to "ON" breaks its condition: Libudev_FOUND AND NOT INTEGRITY Condition values dump: Libudev_FOUND = "0" INTEGRITY = "0" ERROR: Feature "xkbcommon_x11": Forcing to "ON" breaks its condition: QT_FEATURE_xkbcommon AND XKB_COMMON_X11_FOUND Condition values dump: QT_FEATURE_xkbcommon = "ON" XKB_COMMON_X11_FOUND = "0" ERROR: Feature "accessibility_atspi_bridge": Forcing to "ON" breaks its condition: QT_FEATURE_accessibility AND QT_FEATURE_xcb AND QT_FEATURE_dbus AND ATSPI2_FOUND Condition values dump: QT_FEATURE_accessibility = "ON" QT_FEATURE_xcb = "ON" QT_FEATURE_dbus = "ON" ATSPI2_FOUND = "0" ERROR: Feature "mtdev": Forcing to "ON" breaks its condition: Mtdev_FOUND Condition values dump: Mtdev_FOUND = "0"
This seems to be related to the way our Find scripts set the FOUND variables, how pkgconfig module sets them, the fact that we call find_package twice in different scopes, and the new cmake policy https://cmake.org/cmake/help/latest/policy/CMP0126.html