[cfe-dev] Why no Debian package for libc++?

[Ben Pope]

On 29/07/13 14:55, Arji Cot wrote:
> Those are dynamically linked libraries, for what you know you could have
> libsupc++ statically linked to your libc++/abi or to at least of those
> libraries.

Its a fair point, but...

> I'm not aware of any linux distribution or libc++ build under linux that
> is just using libc++ without libstdc++ or libsupc++, for what I know, at
> this point in time, libc++, at least under linux, is using libstdc++ and
> libsupc++ to provide a complete C++ support and filling the blanks that
> are still not supported by the library.

FreeBSD 10 has switched to libc++ and libcxxrt and is working towards a
C++ toolchain that is free of GPLv2, according to the docs, it doesn't
rely upon libsupc++:

https://wiki.freebsd.org/NewC%2B%2BStack


> I think that libc++ will reach the indendpence from the GNU libs if and
> only if it will provide a complete C++ environment.

As far as I know it pretty much does, aside from using libgcc_s which
may be replaceable by libunwind.  In order to link against other
libraries on the system, some of these bits are required anyway, it's a
convenience thing.

I don't think there is very much stopping a linux distribution switching
entirely to libc++ with libcxxrt and libunwind, dropping GCC entirely.
Of course, it would be a massive pain for the users when they have to
build everything from source as practically no binary in existence today
will work on their system.

Ben