support for building shared objects

[gizmomogwai]

No description provided.

[qinqon]

Is there a workaround to construct shared libraries ?

[gizmomogwai]

right now there is no workaround.
if you really really need them, we could try to create all source-libs as shared libs. especially in linux this is not hard.
usually i prefer statically linked executables, as they are much easier to deploy

[qinqon]

I have just move all my project from cmake to buildr + cxxproject, only some shared libraries are pending.
I can help you guys with the task. Did I have to create a new building block similar to source_library or just configure source_library differently ?

[gizmomogwai]

mhh .. thats a design decision.
i would opt for a flag for SourceLibrary. something like
source_lib 'test', :sources => [...], :shared => true with default to :shared == false
depending on this we would have to generate a shared object. for linux this should not be a big problem ... instead of creating an archive we would link a shared object and when linking the executable we would use this.

@marcmo @aschaal what do you guys think

[qinqon]

Looking into the code there isn't much in common betwen the ar command and the linker, in fact is much more similar to the executable.rb both are linkin using the LINKER from the toolchain.
My suggestion is to have a linkable.rb that are extended by executable.rb and shared_library.rb. Or some kind of HasLinkables.rb mixing.

[gizmomogwai]

from the toolchains point of view you are right.
both shared libraries and executables are linked.
you can go ahead and fork cxxproject and put the stuff into it as you wish, we will gladly merge your changes back into the main project.

[qinqon]

I have also to change the gcctoolchain project and the cxx project.

[qinqon]

I don't find the cxx gem project at github with the eval_context.rb

[gizmomogwai]

sorry about that ... the three project you would need are:
https://github.com/marcmo/cxxproject
https://github.com/gizmomogwai/cxxproject_cxx
https://github.com/gizmomogwai/cxxproject_gcctoolchain

[gizmomogwai]

https://github.com/gizmomogwai/cxxproject_examples/tree/master/shared_lib
should show in the shell scripts how to work with shared libraries