[llvm-dev] A libc in LLVM

[Ben Craig via llvm-dev]

Note that libc++abi (i.e. the thing that implements much of the C++ runtime) is implemented with a subset of C++.  It is possible to use a subset of C++ without pulling in a dynamic runtime.

> -----Original Message-----
> From: llvm-dev <llvm-dev-bounces at lists.llvm.org> On Behalf Of David
> Greene via llvm-dev
> Sent: Monday, July 15, 2019 2:02 PM
> To: David Jones <dlj at google.com>
> Cc: Aaron Ballman via llvm-dev <llvm-dev at lists.llvm.org>; Marshall Clow
> <mclow.lists at gmail.com>
> Subject: [EXTERNAL] Re: [llvm-dev] A libc in LLVM
> 
> David Jones <dlj at google.com> writes:
> 
> >  >> * Provide C symbols as specified by the standards, but take
> > advantage  >> and use C++ language facilities for the core implementation.
> >
> >  Does this mean C programs would require a C++ runtime?  If not, how
> > will  the project ensure that?
> >
> > Shooting from the hip: no. Turning off exceptions, RTTI, and static
> > initializers (i.e., things which require a guard variable) is probably
> > enough to obviate the need for the runtime.
> 
> What about bits of the standard library that are not header-only?  My guess
> is that the set of those things may be platform-dependent.
> 
>                     -David
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