[CMake] add_library and target_link_libraries indifferentdirectories?

[Alexandre Feblot]

My question is related to my post "Working with repositories":

I want to compile just a part of the project (a few libs and a few
binaries), but when linking binaries, I still need all dependency
informations. I want to get missing libs from a reference build shared
somewhere else.

 

________________________________

From: cmake-bounces at cmake.org [mailto:cmake-bounces at cmake.org] On Behalf
Of David Cole
Sent: Monday, 12 January 2009 16:05
To: Alexandre Feblot
Cc: cmake at cmake.org
Subject: Re: [CMake] add_library and target_link_libraries
indifferentdirectories?

 

Really, the target_link_libraries command for a given lib or exe belongs
in the same CMakeLists.txt file that you call add_library or
add_executable from. What is your reason for wanting to put the list of
dependencies somewhere else?

 

On Mon, Jan 12, 2009 at 9:29 AM, Alexandre Feblot
<Alexandre.Feblot at thomsonreuters.com> wrote:

Hi Andreas,

 

In fact, this is already what I did:

 

Here is a synopsis of my CMakeLists files:

 

ROOT CMakeLists.txt:

-        define some general stuff, options, macros.

-        call add_subdirectory() for all subdirectories

-        *trying* to set link dependencies with target_link_libraries()

 

subdir CMakeLists.txt:

      - defining libs with add_library()

 

Or don't I understand what you mean by " before linking the libs "?

 

 

Alexandre

 

-----Original Message-----
From: cmake-bounces at cmake.org [mailto:cmake-bounces at cmake.org] On Behalf
Of Andreas Pakulat
Sent: Monday, 12 January 2009 14:32
To: cmake at cmake.org
Subject: Re: [CMake] add_library and target_link_libraries in
differentdirectories?

 

On 12.01.09 11:27:28, Alexandre Feblot wrote:

> Hi,

> 

>  

> 

> I have not been able to define a library dependency in a directory

> different from the one in which the library target is created.

> 

> Is this done by design, or is there any way to do it?

> 

>  

> 

> My goal would be to have

> 

> -          each library in it's own directory (and a CMakeLists.txt
file

> with a add_library command)

> 

> -          all dependencies stored in a single file at the root level

> 

 

Then you need to call add_subdirectory() for the library subdirs before

linking the libs. You can't link a target that you havent' defined yet.

 

Andreas

 

-- 

Chicken Little was right.

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