Building liblldb.lib for windows

[Snuffy4]

Hi. I uses LLDB C++ API in my program, example:

SBAttachInfo attach_info = SBAttachInfo(pid);
target = lldb_debugger.CreateTarget(nullptr);

listener = lldb_debugger.GetListener();
SBBroadcaster broadcaster = target.GetBroadcaster();
broadcaster.AddListener(listener,
				SBProcess::eBroadcastBitStateChanged | SBProcess::eBroadcastBitStructuredData);

broadcaster.AddListener(listener,
				SBTarget::eBroadcastBitModulesLoaded |
				SBTarget::eBroadcastBitModulesUnloaded |
				SBTarget::eBroadcastBitBreakpointChanged |
				SBTarget::eBroadcastBitSymbolsLoaded);

process = target.Attach(attach_info, error);

and to compile the program i need liblldb.lib file, because i have these errors
a reference to an unresolved external character "__declspec(dllimport) public: __cdecl lldb::SBError::SBError(void)" (__imp_??0SBError@lldb@@QEAA@XZ) in the function "public: virtual __int64 __cdecl my_debugger_t::on_event(__int64,char *)" (?on_event@my_debugger_t@@UEAA_J_JPEAD@Z).

This lib exists in clang+llvm-18.1.8-x86_64-pc-windows-msvc release and my program compiles without errors, but i need to use version, which optimized for android.
For building i use these commands

mkdir llvm-toolchain && cd llvm-toolchain
repo init -u https://android.googlesource.com/platform/manifest -b llvm-toolchain
repo sync -c
python toolchain/llvm_android/build.py

The build was successful (based on https://github.com/llvm/llvm-project/commits/3c92011b600bdf70424e2547594dd461fe411a41) for windows. It has exe files, but doesn't have .lib files in lib library, only .a files. And i can't use this build with my project.
What building flags i need to change? Thank you!

[llvmbot]

@llvm/issue-subscribers-lldb

Author: None (Snuffy4)

Hi. I uses LLDB C++ API in my program, example: ``` SBAttachInfo attach_info = SBAttachInfo(pid); target = lldb_debugger.CreateTarget(nullptr);

listener = lldb_debugger.GetListener();
SBBroadcaster broadcaster = target.GetBroadcaster();
broadcaster.AddListener(listener,
SBProcess::eBroadcastBitStateChanged | SBProcess::eBroadcastBitStructuredData);

broadcaster.AddListener(listener,
SBTarget::eBroadcastBitModulesLoaded |
SBTarget::eBroadcastBitModulesUnloaded |
SBTarget::eBroadcastBitBreakpointChanged |
SBTarget::eBroadcastBitSymbolsLoaded);

process = target.Attach(attach_info, error);

and to compile the program i need liblldb.lib file, because i have these errors
 `a reference to an unresolved external character "__declspec(dllimport) public: __cdecl lldb::SBError::SBError(void)" (__imp_??0SBError@<!-- -->lldb@@<!-- -->QEAA@<!-- -->XZ) in the function "public: virtual __int64 __cdecl my_debugger_t::on_event(__int64,char *)" (?on_event@<!-- -->my_debugger_t@@<!-- -->UEAA_J_JPEAD@<!-- -->Z).`

This lib exists in clang+llvm-18.1.8-x86_64-pc-windows-msvc release and my program compiles without errors, but i need to use version, which optimized for android.
For building i use these commands

mkdir llvm-toolchain && cd llvm-toolchain
repo init -u https://android.googlesource.com/platform/manifest -b llvm-toolchain
repo sync -c
python toolchain/llvm_android/build.py

The build was successful for windows. It has exe files, but doesn't have .lib files in lib library, only .a files. And i can't use this build with my project.
What building flags i need to change? Thank you!

<img width="872" height="966" alt="Image" src="https://github.com/user-attachments/assets/e5f2072e-0c59-4597-ae14-9de53da5cdd8" />
</details>

[DavidSpickett]

@charles-zablit may be able to help, they have been on Windows lately.

I know that one form of .lib is an import library for a DLL (https://learn.microsoft.com/en-us/windows/win32/dlls/dynamic-link-library-creation), but I seem to recall there being one which actually contains code. Do you know which one you need? A related question, was there a liblldb.dll in the release that your code did compile against?

but doesn't have .lib files in lib library, only .a files

Could you clarify, do you mean you have only .a files, but you do have some relating to LLDB, or are none of them LLDB related?

If it's the latter, then LLDB may need to be added to LLVM_ENABLE_PROJECTS. I don't know that build script but if you were to edit the configuration in the build folder, that might work.

[Snuffy4]

Yes, release has liblldb.dll, also my build has this one. I am using the LLDB C++ API in my project, so I need the liblldb.lib file. This is a Windows static/import library for linking with MSVC. Without it, my program cannot compile.
However, i'm sure .a files are not compatible with MSVC on Windows.