liblldb-7-dev 1:7~+rc2-1~exp2ubuntu1 (armhf binary) in ubuntu cosmic

 LLDB is a next generation, high-performance debugger. It is built as a set of
 reusable components which highly leverage existing libraries in the larger LLVM
 Project, such as the Clang expression parser and LLVM disassembler.
 .
 This package provides the header files to build extension over lldb.