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[lldb] Add a CMake option to build agains the Python limited API #152034

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Merged
merged 1 commit into from
Aug 5, 2025
Merged

[lldb] Add a CMake option to build agains the Python limited API #152034

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1 change: 1 addition & 0 deletions lldb/cmake/modules/LLDBConfig.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -68,6 +68,7 @@ add_optional_dependency(LLDB_ENABLE_FBSDVMCORE "Enable libfbsdvmcore support in
option(LLDB_USE_ENTITLEMENTS "When codesigning, use entitlements if available" ON)
option(LLDB_BUILD_FRAMEWORK "Build LLDB.framework (Darwin only)" OFF)
option(LLDB_ENABLE_PROTOCOL_SERVERS "Enable protocol servers (e.g. MCP) in LLDB" ON)
option(LLDB_ENABLE_PYTHON_LIMITED_API "Force LLDB to only use the Python Limited API (requires SWIG 4.2 or later)" OFF)
option(LLDB_NO_INSTALL_DEFAULT_RPATH "Disable default RPATH settings in binaries" OFF)
option(LLDB_USE_SYSTEM_DEBUGSERVER "Use the system's debugserver for testing (Darwin only)." OFF)
option(LLDB_SKIP_STRIP "Whether to skip stripping of binaries when installing lldb." OFF)
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2 changes: 2 additions & 0 deletions lldb/include/lldb/Host/Config.h.cmake
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Expand Up @@ -45,6 +45,8 @@

#cmakedefine01 LLDB_ENABLE_PYTHON

#cmakedefine01 LLDB_ENABLE_PYTHON_LIMITED_API

#cmakedefine01 LLDB_ENABLE_FBSDVMCORE

#cmakedefine01 LLDB_EMBED_PYTHON_HOME
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10 changes: 9 additions & 1 deletion lldb/source/Plugins/ScriptInterpreter/Python/lldb-python.h
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Expand Up @@ -45,12 +45,20 @@ static llvm::Expected<bool> *g_fcxx_modules_workaround [[maybe_unused]];
#include <locale>
#endif

#define LLDB_MINIMUM_PYTHON_VERSION 0x03080000

#if LLDB_ENABLE_PYTHON_LIMITED_API
// If defined, LLDB will be ABI-compatible with all Python 3 releases from the
// specified one onward, and can use Limited API introduced up to that version.
#define Py_LIMITED_API LLDB_MINIMUM_PYTHON_VERSION
#endif

// Include python for non windows machines
#include <Python.h>

// Provide a meaningful diagnostic error if someone tries to compile this file
// with a version of Python we don't support.
static_assert(PY_VERSION_HEX >= 0x03080000,
static_assert(PY_VERSION_HEX >= LLDB_MINIMUM_PYTHON_VERSION,
"LLDB requires at least Python 3.8");
#endif

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