Date: Thu, 12 Sep 2013 21:48:26 -0400
Subject: Nested cmake?
From: [email protected]
To: [email protected]

Hello.
I was looking at how to use libftdi in the context of a project I'm working on 
without having to install it to a system directory. The project already uses 
cmake and I noticed libftdi does as well.
I was thinking I could just add add_subdirectory() with the libftdi directory 
and then retrieve the output library paths from the top level and set global 
properties so some applications could set their include and libraries to use 
the libraries that were built. Is anyone else doing this?

I added the libftdi directory to my project and  did discover some issues with 
including the libftdi in the main cmakelists.txt file, specifically that the 
libftdi cmake file uses CMAKE_SOURCE_DIR and CMAKE_BINARY_DIR and this is 
looking for and outputting files relative to the main cmake file.

Would it be reasonable to make the libftdi cmake files operate relative to 
their location? I've made changes locally and everything appears to work 
correctly in both the normal case of running using the libftdi cmake as the 
base file and in my case of nesting it within my larger cmake build setup.

I'll send a patch tomorrow so it's clear what I mean. I was hoping someone had 
some advice on the idea of using the library without installing it.
Chris




libftdi - see http://www.intra2net.com/en/developer/libftdi for details.

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Hello,

You're doing it wrong, you can use find_package:

0. look at the cmake example in example /examples/cmake_example/.

1. Install libftdi where you want by passing 
CMAKE_INSTALL_PREFIX=/home/bob/mylibfti/install to cmake configuration, this 
should install 
/home/bob/mylibftdi/install/lib/cmake/libftdi1/LibFTDI1Config.cmake

2. Use find_package(LibFTDI1) in your project, and pass 
-DLibFTDI1Config_DIR=/home/bob/mylibfti/install/lib/cmake/libftdi1 to your 
cmake configuration (only needed for non-system libftdi installations).

3. Link with LIBFTDI_LIBRARIES in your project, done.

x.


                                          

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libftdi - see http://www.intra2net.com/en/developer/libftdi for details.
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