Hi, I think find_package in Config mode might still need some more work.
When the FooConfig.cmake has been found, Foo_FOUND is set to TRUE: // Set a variable marking whether the package was found. std::string foundVar = this->Name; foundVar += "_FOUND"; This means it is true in all cases that the Config.cmake file has been found (and the version was compatible). Now I have to questions: * how to handle COMPONENTS ? If a package is requested with COMPONENTS, these should be considered for setting Foo_FOUND: find_package(Foo REQUIRED COMPONENTS A B C) should only succeed if A, B and C are found. This is how I would expect COMPONENTS to be handled in a FindFoo.cmake: (a) all components are searched by the Find-module, and each per-component X_Y_FOUND is set accordingly (b) there is a package-specific default subset of these components which have to be found to make the package found, i.e. FOO_FOUND=TRUE (c) by adding COMPONENTS to the find_package() call, these components are added to the set of components which have to be found to make FOO_FOUND=TRUE (d) if REQUIRED is used and FOO_FOUND is false, it errors out * how to handle dependencies ? Let's say the exported targets of Foo link against other imported/exported targets. So that the imported targets work properly, the targets for the libraries it depends on must have been found and imported before. Where should this find_package(Bar) be done ? In FooConfig.cmake ? This would be possible only if Bar can be found in Config mode, because otherwise Foo cannot rely on FindBar.cmake being available. For Find-modules, it is clear that a Find-module should also find all its dependencies. For a Config file I'm not sure about it. Shouldn't this be only a source of information, purely declarative, and not initiate searching other packages ? 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
