[Vxl-maintainers] Changing build order of libraries

[Amitha P. <pe...@cs...>]

Hi all

Our current build order in the CMakeLists.txt tries to build libraries
before their dependencies are built. This makes it difficult to build
just a single library. For example, running "make" in core/vil tries
also to build core/vil/algo, core/vil/io, core/vil/examples, and
core/vil/tests. Some of these will fail if other parts of the library
haven't been built yet: tests depends on testlib, examples may depend
on other things.

I think a good solution would be to move all the SUBDIR commands to
the core/CMakeLists.txt file. So, this file will have a format like

# Level 1 libraries
SUBDIRS( vpl )
SUBDIRS( vsl )
..

# Level 2 libraries
SUBDIRS( vnl/io )
SUBDIRS( vnl/algo )
SUBDIRS( vgl/io )
SUBDIRS( vgl/algo )
..

# Test cases
IF( BUILD_TESTING )
  SUBDIRS( testlib/tests )
  SUBDIRS( vnl/tests )
  SUBDIRS( vil/tests )
  ...
  SUBDIRS( tests )
ENDIF( BUILD_TESTING )

# Examples
IF( BUILD_EXAMPLES )
  SUBDIRS( vnl/examples )
  SUBDIRS( vil/examples )
  ...
  SUBDIRS( examples )
ENDIF( BUILD_EXAMPLES )

Comments?

Amitha.