On Friday 15 February 2013, Brad King wrote: > On 02/15/2013 04:37 PM, Alexander Neundorf wrote: > > So is it possible to refer to not-yet-defined targets from tll(), and > > what happens if they get not defined later on ? > > This works at it always has. If the named item does not resolve to a > target name at generate time it is treated as a raw library (-lfoo). > If it does resolve to a target then now the usage requirements will > be applied from its interface properties. The decision now occurs > at generate time.
The thing is, if I generate an error at configure time if at the end of a directory a target has been used but has not been defined, i.e. a target Foo has been imported which links against a missing imported target, it would still be possible that the project can build successfully if this bad imported target Foo is simply not used, e.g. because Foo_FOUND is set to FALSE. How about that: when in the exported and then imported Target.cmake a used target is not yet defined, this target name is added to a cmake variable. When then cmake calculates the linking, and it can't find a target, it checks whether the name is contained in this cmake variable. If so, it errors out instead of assuming it is the name of a library. Does that sound reasonable, and better than failing already earlier ? Alex -- Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://public.kitware.com/cgi-bin/mailman/listinfo/cmake-developers
