This patch allows tools to be built for the target platform when the
QT_BUILD_TOOLS_WHEN_CROSSCOMPILING parameter is set at configuration
time.
To avoid naming conflicts, the target tools are suffixed with "_native".
The qt_get_tool_target_name() function can be used to get the tool name
for both scenarios (cross and non-cross compilation).
Extend pro2cmake to refer to the right target name for tools.
The relevant write_XXX functions have a new target_ref parameter that
will be "${target_name}" for tools and literally the target name for
everything else.
Fixes: QTBUG-81901
Change-Id: If4efbc1fae07a4a3a044dd09c9c06be6d517825e
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
5a779a4ad3