llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT--> @llvm/pr-subscribers-clang Author: Paul Kirth (ilovepi) <details> <summary>Changes</summary> We'd like to build libc++ using FatLTO (see https://llvm.org/docs/FatLTO.html for details). This gives us more control over how libc++ can be consumed by users of our toolchain, like the Fuchsia SDK. --- Full diff: https://github.com/llvm/llvm-project/pull/112277.diff 1 Files Affected: - (modified) clang/cmake/caches/Fuchsia-stage2.cmake (+8) ``````````diff diff --git a/clang/cmake/caches/Fuchsia-stage2.cmake b/clang/cmake/caches/Fuchsia-stage2.cmake index 5af98c7b3b3fba..e62f29ecbe6f45 100644 --- a/clang/cmake/caches/Fuchsia-stage2.cmake +++ b/clang/cmake/caches/Fuchsia-stage2.cmake @@ -192,6 +192,10 @@ foreach(target aarch64-unknown-linux-gnu;armv7-unknown-linux-gnueabihf;i386-unkn set(RUNTIMES_${target}_LLVM_TOOLS_DIR "${CMAKE_BINARY_DIR}/bin" CACHE BOOL "") set(RUNTIMES_${target}_LLVM_ENABLE_RUNTIMES "compiler-rt;libcxx;libcxxabi;libunwind" CACHE STRING "") + # Enable FatLTO for Linux and baremetal runtimes + set(RUNTIMES_${target}_LLVM_ENABLE_LTO ON CACHE BOOL "") + set(RUNTIMES_${target}_LLVM_ENABLE_FATLTO ON CACHE BOOL "") + # Use .build-id link. list(APPEND RUNTIME_BUILD_ID_LINK "${target}") endif() @@ -274,6 +278,10 @@ if(FUCHSIA_SDK) set(RUNTIMES_${target}+asan+noexcept_LIBCXXABI_ENABLE_EXCEPTIONS OFF CACHE BOOL "") set(RUNTIMES_${target}+asan+noexcept_LIBCXX_ENABLE_EXCEPTIONS OFF CACHE BOOL "") + # Enable FatLTO for Fuchsia runtimes + set(RUNTIMES_${target}_LLVM_ENABLE_LTO ON CACHE BOOL "") + set(RUNTIMES_${target}_LLVM_ENABLE_FATLTO ON CACHE BOOL "") + # Use .build-id link. list(APPEND RUNTIME_BUILD_ID_LINK "${target}") endforeach() `````````` </details> https://github.com/llvm/llvm-project/pull/112277 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
