Status

FreeBSD

LLDB on FreeBSD lags behind the Linux implementation but is improving rapidly. For more details, see the Features by OS section below.

Linux

LLDB is improving on Linux. Linux is nearing feature completeness with Darwin to debug x86_64, i386, ARM, AArch64, IBM POWER (ppc64), IBM Z (s390x), and MIPS64 programs. For more details, see the Features by OS section below.

macOS

LLDB is the system debugger on macOS, iOS, tvOS, and watchOS and can be used for C, C++, Objective-C and Swift development for x86_64, i386, ARM, and AArch64 debugging. The entire public API is exposed through a macOS framework which is used by Xcode and the lldb command line tool. It can also be imported from Python. The entire public API is exposed through script bridging which allows LLDB to use an embedded Python script interpreter, as well as having a Python module named “lldb” which can be used from Python on the command line. This allows debug sessions to be scripted. It also allows powerful debugging actions to be created and attached to a variety of debugging workflows.

NetBSD

LLDB is improving on NetBSD and reaching feature completeness with Linux.

Windows

LLDB on Windows is still under development, but already useful for i386 programs (x86_64 untested) built with DWARF debug information, including postmortem analysis of minidumps. For more details, see the Features by OS section below.

Features Matrix

Feature FreeBSD Linux macOS NetBSD Windows
Backtracing YES YES YES YES YES
Breakpoints YES YES YES YES YES
C++11: YES YES YES YES Unknown
Commandline tool YES YES YES YES YES
Core file debugging YES (ELF) YES (ELF) YES (MachO) YES (ELF) YES (Minidump)
Remote debugging NO YES (lldb-server) YES (debugserver) YES (lldb-server) NO
Disassembly YES YES YES YES YES
Expression evaluation Unknown YES (known issues) YES YES (known issues) YES (known issues)
JIT debugging Unknown Symbolic debugging only Untested Work In Progress NO
Objective-C 2.0: Unknown N/A YES Unknown N/A