https://github.com/charles-zablit created https://github.com/llvm/llvm-project/pull/203274
Add an opt-in cache option (default OFF). When ON, every target declared via `add_lldb_unittest` links without per-target debug info and dead-strips: - **MSVC**: `/DEBUG:NONE + /INCREMENTAL:NO + /OPT:REF + /OPT:ICF` - **clang/gcc**: `-g0 + LINKER:--strip-debug` (or `LINKER:-S` on macOS). This drastically speeds up linking the unittests executable when building with debug info on Windows. >From 789f60b45ded696d35167229b51a7dcc1a908d37 Mon Sep 17 00:00:00 2001 From: Charles Zablit <[email protected]> Date: Thu, 11 Jun 2026 14:58:12 +0100 Subject: [PATCH] [lldb][unittests] Add LLDB_UNITTEST_STRIP_DEBUG_INFO to cut unittest link time --- lldb/unittests/CMakeLists.txt | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/lldb/unittests/CMakeLists.txt b/lldb/unittests/CMakeLists.txt index 41e1c29c8093b..365f3e76430e2 100644 --- a/lldb/unittests/CMakeLists.txt +++ b/lldb/unittests/CMakeLists.txt @@ -10,6 +10,11 @@ if (CXX_SUPPORTS_SUGGEST_OVERRIDE_FLAG) add_compile_options("-Wno-suggest-override") endif() +option(LLDB_UNITTEST_STRIP_DEBUG_INFO + "Strip debug info from lldb unit-test binaries to cut link time and disk \ +usage. On MSVC this also adds /OPT:REF /OPT:ICF /INCREMENTAL:NO. Turn OFF \ +when you need to debug a unittest binary." OFF) + function(add_lldb_unittest test_name) cmake_parse_arguments(ARG "SBAPITEST" @@ -41,6 +46,23 @@ function(add_lldb_unittest test_name) COMMAND "${CMAKE_COMMAND}" -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/Inputs) target_link_libraries(${test_name} PRIVATE ${ARG_LINK_LIBS}) + + if (LLDB_UNITTEST_STRIP_DEBUG_INFO) + if (MSVC) + target_link_options(${test_name} PRIVATE + "LINKER:/DEBUG:NONE" + "LINKER:/INCREMENTAL:NO" + "LINKER:/OPT:REF" + "LINKER:/OPT:ICF") + else() + target_compile_options(${test_name} PRIVATE -g0) + if (APPLE) + target_link_options(${test_name} PRIVATE "LINKER:-S") + else() + target_link_options(${test_name} PRIVATE "LINKER:--strip-debug") + endif() + endif() + endif() endfunction() function(add_unittest_inputs test_name inputs) _______________________________________________ lldb-commits mailing list [email protected] https://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-commits
