lldb: add rule to generate LLDBWrapLua.cpp

[emaste]

Summary

Building lldb's bindings requires swig, but we do not want to include it in the FreeBSD base system (as a build tool) because it has non-trivial dependencies. As a workaround, add a make rule to generate LLDBWrapLua.cpp and plan to commit the generated file.

Requires the swig30 package.

After importing an updated llvm/lldb into FreeBSD run make run-swig in lib/clang/liblldb to generate generate LLDBWrapLua.cpp, and commit the result.

[brooks]

Hmm, does this belong here or as part of liblua? It doesn't look like this binding depends on lldb source at all.

[emaste]

The swig input is ${LLDB_SRCS}/bindings/lua.swig

[brooks]

In D24265#533908, @emaste wrote:

The swig input is ${LLDB_SRCS}/bindings/lua.swig

Oh right, I was confused by a slightly too narrow browser window and phabricator's casual treatment of line wrapping.