Merge topic 'cpack-D-no-sep'

e7371f5a18 cpack: Allow -D flag to be used without separator

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Merge-request: !9924

Source/CPack/cpack.cxx

@@ -208,6 +208,7 @@ int main(int argc, char const* const* argv)
     CommandArgument{ "--list-presets", CommandArgument::Values::Zero,
                      CommandArgument::setToTrue(listPresets) },
     CommandArgument{ "-D", CommandArgument::Values::One,
+                     CommandArgument::RequiresSeparator::No,
                      [&log, &definitions](const std::string& arg, cmake*,
                                           cmMakefile*) -> bool {
                        std::string value = arg;