On 2013-03-08 15:19, Alexander Neundorf wrote:
There is no need to overengineer it.
Just do
include_directories(${CMAKE_SOURCE_DIR}/lib1/src)
in CMakeLists.txt (3). No need to put it in the cache or something.
This can break if your current project tree ever lands in a larger tree.
In general I prefer to avoid ${CMAKE_SOURCE_DIR} in favor of
${<project>_SOURCE_DIR} instead.
Even better, if each of your libraries declares a project, you can use
${lib1_SOURCE_DIR}/src, and you won't have to change it if you later
move lib1 to a different place in the source tree.
(I've seen legitimate uses of defining variables for libraries'
interface properties, e.g. include directories, but all of this is about
to become properly supported :-), and anyway isn't something I would
recommend trying to emulate in a young project.)
--
Matthew
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