[libc-commits] [clang] [compiler-rt] [flang] [libc] [libclc] [libcxx] [libcxxabi] [libunwind] [lld] [lldb] [llvm] [mlir] [openmp] [polly] [CMake] Bump the minimum required version to 3.31 (PR #223854)

[Mehdi Amini via libc-commits]

joker-eph wrote:

I merged main here to refresh the CI status: seems that some buildkite containers are not updated here? Who's responsible for these?

Also a libcxxabi failure on the linux pre-merge:
```
[1800/4443] Scanning /home/gha/actions-runner/_work/llvm-project/llvm-project/libcxxabi/src/cxa_aux_runtime.cpp for CXX dependencies
  FAILED: [code=127] libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_aux_runtime.cpp.o.ddi 
  "CMAKE_CXX_COMPILER_CLANG_SCAN_DEPS-NOTFOUND" -format=p1689 -- /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/clang++ --target=x86_64-unknown-linux-gnu -DHAVE___CXA_THREAD_ATEXIT_IMPL -DLIBCXX_BUILDING_LIBCXXABI -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_LIBCPP_AVAILABILITY_MINIMUM_HEADER_VERSION=2 -D_LIBCPP_BUILDING_LIBRARY -D_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER -D_LIBCXXABI_BUILDING_LIBRARY -D_LIBCXXABI_LINK_PTHREAD_LIB -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/gha/actions-runner/_work/llvm-project/llvm-project/libunwind/include -I/home/gha/actions-runner/_work/llvm-project/llvm-project/libcxxabi/../libcxx/src -I/home/gha/actions-runner/_work/llvm-project/llvm-project/libcxxabi/include -I/home/gha/actions-runner/_work/llvm-project/llvm-project/build/include/x86_64-unknown-linux-gnu/c++/v1 -I/home/gha/actions-runner/_work/llvm-project/llvm-project/build/include/c++/v1 -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -Xclang -fno-pch-timestamp  -O3 -DNDEBUG -std=c++23 -fPIC -nostdinc++ -fstrict-aliasing -funwind-tables -D_DEBUG -UNDEBUG -UNDEBUG -Wall -Wextra -Wnewline-eof -Wshadow -Wwrite-strings -Wno-unused-parameter -Wno-long-long -Werror=return-type -Wextra-semi -Wundef -Wunused-template -Wformat-nonliteral -Wzero-length-array -Wdeprecated-redundant-constexpr-static-def -Wno-nullability-completeness -Wmissing-prototypes -Wno-user-defined-literals -Wno-covered-switch-default -Wno-suggest-override -Wno-error -fsized-deallocation -fvisibility=hidden -fdebug-prefix-map=/home/gha/actions-runner/_work/llvm-project/llvm-project/build/include/c++/v1=/home/gha/actions-runner/_work/llvm-project/llvm-project/libcxx/include -x c++ /home/gha/actions-runner/_work/llvm-project/llvm-project/libcxxabi/src/cxa_aux_runtime.cpp -c -o libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_aux_runtime.cpp.o -resource-dir "/home/gha/actions-runner/_work/llvm-project/llvm-project/build/lib/clang/24" -MT libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_aux_runtime.cpp.o.ddi -MD -MF libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_aux_runtime.cpp.o.ddi.d > libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_aux_runtime.cpp.o.ddi.tmp && mv libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_aux_runtime.cpp.o.ddi.tmp libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_aux_runtime.cpp.o.ddi
  /bin/sh: 1: CMAKE_CXX_COMPILER_CLANG_SCAN_DEPS-NOTFOUND: not found
  ```

I don't know if it's present at head, though.

https://github.com/llvm/llvm-project/pull/223854