[CMake] Make Nightly build tests.

[Björn Piltz]

Hi all,
I'm quoting my question here:
http://stackoverflow.com/questions/3290280/cmake-and-ctest-how-to-make-target-nightly-actually-build-the-tests

It's a well known problem that executing make "test" doesn't build the
tests as discussed here. As suggested, the problem can be partly
solved with the artificial target "check". I want to know how I can
force building of tests when i call "make Nightly".

What I've done so far:

  add_custom_target(buildtests)
  add_custom_target(check COMMAND "ctest")
  add_dependencies(check buildtests)
  add_dependencies(Nightly buildtests)

  add_dependencies(buildtests Test1)
  ...
  add_dependencies(buildtests TestN)

Now "make check" builds an runs the tests, but "make Nightly"

builds the tests
updates the repo to CTEST_NIGHTLY_START_TIME
builds all other targets
runs the (now outdated) tests

I'd be greatful for any suggestions!