https://github.com/tstellar updated
https://github.com/llvm/llvm-project/pull/140381
>From 24975b0426a779c6ee109f90e8b4cb09b826a18c Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstel...@redhat.com>
Date: Sat, 17 May 2025 16:40:51 +0000
Subject: [PATCH] [CMake][Release] Build with -ffat-lto-objects
Fixes #133580
---
clang/cmake/caches/Release.cmake | 6 +++++-
clang/cmake/caches/release_cpack_pre_build_strip_lto.cmake | 5 +++++
2 files changed, 10 insertions(+), 1 deletion(-)
create mode 100644 clang/cmake/caches/release_cpack_pre_build_strip_lto.cmake
diff --git a/clang/cmake/caches/Release.cmake b/clang/cmake/caches/Release.cmake
index fb12dfcdcb5a5..a523cc561b3f9 100644
--- a/clang/cmake/caches/Release.cmake
+++ b/clang/cmake/caches/Release.cmake
@@ -102,7 +102,7 @@ if (LLVM_RELEASE_ENABLE_LTO)
# FIXME: We can't use LLVM_ENABLE_LTO=Thin here, because it causes the CMake
# step for the libcxx build to fail. CMAKE_INTERPROCEDURAL_OPTIMIZATION does
# enable ThinLTO, though.
- set(RUNTIMES_CMAKE_ARGS "-DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON
-DLLVM_ENABLE_LLD=ON" CACHE STRING "")
+ set(RUNTIMES_CMAKE_ARGS "-DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON
-DLLVM_ENABLE_LLD=ON -DLLVM_ENABLE_FATLTO=ON" CACHE STRING "")
endif()
# Stage 1 Common Config
@@ -144,3 +144,7 @@ set_final_stage_var(CPACK_GENERATOR "TXZ" STRING)
set_final_stage_var(CPACK_ARCHIVE_THREADS "0" STRING)
set_final_stage_var(LLVM_USE_STATIC_ZSTD "ON" BOOL)
+if (LLVM_RELEASE_ENABLE_LTO)
+ set_final_stage_var(LLVM_ENABLE_FATLTO "ON" BOOL)
+ set_final_stage_var(CPACK_PRE_BUILD_SCRIPTS
"${CMAKE_CURRENT_LIST_DIR}/release_cpack_pre_build_strip_lto.cmake" STRING)
+endif()
diff --git a/clang/cmake/caches/release_cpack_pre_build_strip_lto.cmake
b/clang/cmake/caches/release_cpack_pre_build_strip_lto.cmake
new file mode 100644
index 0000000000000..4f6ee946d629c
--- /dev/null
+++ b/clang/cmake/caches/release_cpack_pre_build_strip_lto.cmake
@@ -0,0 +1,5 @@
+file(GLOB files ${CPACK_TEMPORARY_INSTALL_DIRECTORY}/lib/*.a
${CPACK_TEMPORARY_INSTALL_DIRECTORY}/lib/*.so*)
+
+foreach(file ${files})
+ execute_process(COMMAND ${CPACK_TEMPORARY_INSTALL_DIRECTORY}/bin/llvm-strip
--no-strip-all -R .llvm.lto ${file})
+endforeach()
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