2012/10/26 Vyacheslav Karamov <ubuntul...@yandex.ru>:
> Hi All!
>
> I have project with the structure similar to this
>
> worker
> | |
> | chatterbox
> | | |
> | | CMakeLists.txt
> | |
> | externals
> | | |
> | | sndlib
> | | |
> | | CMakeLists.txt
> | CMakeLists.txt
> |
> CMakeLists.txt
>
>
>
> $ cat worker/CMakeLists.txt
>
> cmake_minimum_required(VERSION 2.6)
>
> add_subdirectory(externals)
> add_subdirectory(chatterbox)
>
> If I set sndlib target as a variable
>
> set (snd_lib "sndlib")
> add_library(${snd_lib} SHARED ...)
>
> variable ${snd_lib} is undefined at the parent scope, i.e. I can't use
> ${snd_lib} in chatterbox/ CMakeLists.txt
>
> target_link_libraries(chatterbox ${snd_lib}) # ${snd_lib} is empty!
>From your description this is strange because 'chatterbox'
is a subdir of 'worker' where snd_lib has been defined so it should be
visible, I guess...
unless you define the snd_lib var AFTER you
add_subdirectory(chatterbox)
since add_subdirectory process subdir first you must define
variable you need before "add_subdirectory".
> How to handle this situation in a proper way?
Define it at the scope it ought to be ?
or use
set (snd_lib "sndlib" PARENT_SCOPE)
but again I think your problems comes from the fact
your defined your var after add_subdirectory.
--
Erk
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