Add literal type related ffi functions implementation.
libgrust/ChangeLog:
* libproc_macro/literal.h (Literal__drop): Implement
drop.
(Literal__string): Constructor from a string function prototype.
(Literal__byte_string): Constructor from a byte string function
prototype.
(Literal__from_string): Add function body, no implementation
yet.
* libproc_macro/literal.cc: New file.
Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
libgrust/ChangeLog:
* libproc_macro/rust/bridge.rs: New file.
* libproc_macro/rust/bridge/group.rs: New file.
* libproc_macro/rust/bridge/ident.rs: New file.
* libproc_macro/rust/bridge/literal.rs: New file.
* libproc_macro/rust/bridge/punct.rs: New file.
* libproc_macro/rust/bridge/span.rs: New file.
* libproc_macro/rust/bridge/token_stream.rs: New file.
* libproc_macro/rust/group.rs: New file.
* libproc_macro/rust/ident.rs: New file.
* libproc_macro/rust/lib.rs: New file.
* libproc_macro/rust/literal.rs: New file.
* libproc_macro/rust/punct.rs: New file.
* libproc_macro/rust/span.rs: New file.
* libproc_macro/rust/token_stream.rs: New file.
Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
..., but not for host builds, which don't need it, and it may cause the build
to fail.
Use what appears to be the standard pattern for that (see
'libbacktrace/configure.ac', 'zlib/configure.ac').
PR rust/113056
libgrust/
* configure.ac: 'AM_ENABLE_MULTILIB' only for target builds.
* configure: Regenerate.
