> On Jan 1, 2019, at 8:02 AM, Robert Swindells <r...@fdy2.co.uk> wrote:
>
> How does the usage of libLLVM from MesaLib make use of the LLVM headers
> at *runtime* ?
>
> If they are not needed at runtime then why do they need to be installed
> on a target machine ?
What's needed on the target machine are the LLVM libraries, and the headers are
needed to use the APIs provided by those libraries. This isn't any different
than the target system's libc needing the headers installed that define the
interfaces to libc so that some application that also runs on the target can
use functions from libc. The headers are needed so that MesaLib can get the
interface descriptions for functions in the LLVM libraries, which it links
against.
LLVM is more than just a build-time host tool... more and more it is being used
to provide system run-time services on the target system, and I'm not talking
about what is traditionally referred to as the "compiler runtime" (e.g. the
libgcc analogue) ... I'm referring to the compiler (and the virtual machine it
implements) itself.
-- thorpej
