Messages in this thread | | | From | Ma Xinjian <> | Subject | Re: [PATCH 2/2] perf clang: Fixes for more recent LLVM/clang | Date | Fri, 12 Nov 2021 18:24:44 +0800 |
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Hi
We build perf with clang also recently, but unlucky that failed with following errors:
``` In file included from /usr/lib/llvm-7/include/llvm/ADT/STLExtras.h:21, from /usr/lib/llvm-7/include/llvm/ADT/StringRef.h:13, from /usr/lib/llvm-7/include/clang/Basic/Version.h:20, from test-clang.cpp:2: /usr/lib/llvm-7/include/llvm/ADT/SmallVector.h: In instantiation of 'void llvm::SmallVectorTemplateBase<T, true>::push_back(const T&) [with T = clang::driver::OffloadUnbundlingJobAction::DependentActionInfo]': /usr/lib/llvm-7/include/clang/Driver/Action.h:579:61: required from here /usr/lib/llvm-7/include/llvm/ADT/SmallVector.h:313:11: error: 'void* memcpy(void*, const void*, size_t)' writing to an object of type 'struct clang::driver::OffloadUnbundlingJobAction::DependentActionInfo' with no trivial copy-assignment; use copy-initialization instead [-Werror=class-memaccess] memcpy(this->end(), &Elt, sizeof(T)); ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from /usr/lib/llvm-7/include/clang/Driver/Driver.h:15, from test-clang.cpp:6: /usr/lib/llvm-7/include/clang/Driver/Action.h:549:10: note: 'struct clang::driver::OffloadUnbundlingJobAction::DependentActionInfo' declared here struct DependentActionInfo final { ^~~~~~~~~~~~~~~~~~~ cc1plus: all warnings being treated as errors ```
llvm version: 7 rootfs: Debian10 kernel: v5.8 v5.11 v5.15 reproduce: $ cd linux/tools/perf $ make LIBCLANGLLVM=1 ARCH= EXTRA_CFLAGS='-fno-omit-frame-pointer -fsanitize=undefined -fsanitize=address'
Would you please kindly point out what's wrong with our steps? Or can you give us your command to make perf with clang?
Thanks Ma Xinjian
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