cmake: refactor boilerplate for projects

Don't rely on a macro that shouldn't be necessary.

The information "opentrack_boilerplate" retrieves is now factored out to
be easily available to projects themselves.

opentrack_boilerplate can now also build executables.

When appropriate, target properties are now concatenated rather than
replaced.

1 files changed, 3 insertions, 0 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 25220fe5..8fadd0f6 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -33,6 +33,9 @@ file(GLOB opentrack-subprojects
     "macosx/${C}"
     "cv/${C}"
 )
+
+list(SORT opentrack-subprojects)
+
 foreach(i ${opentrack-subprojects})
     get_filename_component(i ${i} DIRECTORY)
     add_subdirectory(${i})