strip '-' from PKG_NAME to determine official module name, but keep them
inside PKG_NAMEs for readibility (same as we still have the major
version number inside PKG_NAMEs)
PKG_VERSION?=5.15.16
PKG_SOURCE_URL?=https://download.qt.io/official_releases/qt/$(basename $(PKG_VERSION))/$(PKG_VERSION)/submodules
-PKG_SYS_NAME?=$(subst $(firstword $(subst ., ,$(PKG_VERSION))),,$(PKG_NAME))
+PKG_SYS_NAME?=$(subst -,,$(subst $(firstword $(subst ., ,$(PKG_VERSION))),,$(PKG_NAME)))
PKG_SYS_NAME_FULL?=$(PKG_SYS_NAME)-everywhere-src-$(PKG_VERSION)
PKG_SOURCE?=$(subst -src-,-opensource-src-,$(PKG_SYS_NAME_FULL)).tar.xz