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The DEPENDS or DEPENDENCIES arguments in a call to cpack_ifw_configure_component() or cpack_ifw_configure_component_group() specify a name and optionally a version constraint as a single string. QtIFW also allows a colon (requires QtIFW 3.1 or later) or a hyphen to separate the name and version. The version may optionally contain a leading operator, with = being assumed when no operator is present. The previous code was not handling : as a separator at all and was erroneously dropping the version part when no operator was given. Fix both of those non-conforming behaviors and also warn if trying to use a hyphen in a name with a QtIFW version that isn't recent enough to support it. Fixes: #21697