| Issue |
166861
|
| Summary |
LIBOMP: libomp_check_variable(): LIBOMP_ARCH = is unknown
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
ZuseZ4
|
I am building the offload and openmp runtimes via Rust bootstrap, resulting in the commands given below.
It seems like on my system the `default` value for runtime targets isn't recognized, but I might be missing something else.
My LLVM build is based on the version 21.1.3, as it is our current submodule in the Rust project: https://github.com/rust-lang/rust/tree/master/src
I'm trying a new build with `default` being replaced by `x86_64-unknown-linux-gnu`, but overall the build is quite fragile (fails with most changes I tested), so it would be great to learn why default fails, and if it can be fixed.
cc @kevinsala
```
running: cd "/home/manuel/prog/rust_gpu/build/x86_64-unknown-linux-gnu/llvm/build" && CMAKE_PREFIX_PATH="" DESTDIR="" LC_ALL="C" "cmake" "/home/manuel/prog/rust_gpu/src/llvm-project/llvm" "-G" "Ninja" "-DLLVM_ENABLE_ASSERTIONS=ON" "-DLLVM_UNREACHABLE_OPTIMIZE=OFF" "-DLLVM_ENABLE_PLUGINS=OFF" "-DLLVM_TARGETS_TO_BUILD=AArch64;AMDGPU;ARM;BPF;Hexagon;LoongArch;MSP430;Mips;NVPTX;PowerPC;RISCV;Sparc;SystemZ;WebAssembly;X86" "-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=AVR;M68k;CSKY;Xtensa" "-DLLVM_INCLUDE_EXAMPLES=OFF" "-DLLVM_INCLUDE_DOCS=OFF" "-DLLVM_INCLUDE_BENCHMARKS=OFF" "-DLLVM_INCLUDE_TESTS=OFF" "-DLLVM_ENABLE_LIBEDIT=OFF" "-DLLVM_ENABLE_BINDINGS=OFF" "-DLLVM_ENABLE_Z3_SOLVER=OFF" "-DLLVM_PARALLEL_COMPILE_JOBS=16" "-DLLVM_TARGET_ARCH=x86_64" "-DLLVM_DEFAULT_TARGET_TRIPLE=x86_64-unknown-linux-gnu" "-DLLVM_ENABLE_WARNINGS=OFF" "-DLLVM_INSTALL_UTILS=ON" "-DLLVM_ENABLE_ZLIB=ON" "-DLLVM_LINK_LLVM_DYLIB=ON" "-DLLVM_ENABLE_LIBXML2=OFF" "-DLLVM_RUNTIME_TARGETS=default;amdgcn-amd-amdhsa;nvptx64-nvidia-cuda" "-DRUNTIMES_nvptx64-nvidia-cuda_LLVM_ENABLE_RUNTIMES=openmp" "-DRUNTIMES_amdgcn-amd-amdhsa_LLVM_ENABLE_RUNTIMES=openmp" "-DLLVM_ENABLE_PROJECTS=clang" "-DLLVM_ENABLE_RUNTIMES=compiler-rt;offload;openmp" "-DLLVM_VERSION_SUFFIX=-rust-1.93.0-nightly" "-DCMAKE_INSTALL_MESSAGE=LAZY" "-DCMAKE_C_COMPILER=cc" "-DCMAKE_CXX_COMPILER=c++" "-DCMAKE_ASM_COMPILER=cc" "-DCMAKE_C_FLAGS=-ffunction-sections -fdata-sections -fPIC -m64 --target=x86_64-unknown-linux-gnu" "-DCMAKE_CXX_FLAGS=-ffunction-sections -fdata-sections -fPIC -m64 --target=x86_64-unknown-linux-gnu" "-DCMAKE_SHARED_LINKER_FLAGS=" "-DCMAKE_MODULE_LINKER_FLAGS=" "-DCMAKE_EXE_LINKER_FLAGS=" "-DLLVM_ENABLE_ZSTD=OFF" "-DCMAKE_INSTALL_PREFIX=/home/manuel/prog/rust_gpu/build/x86_64-unknown-linux-gnu/llvm" "-DCMAKE_ASM_FLAGS= -ffunction-sections -fdata-sections -fPIC -m64 --target=x86_64-unknown-linux-gnu" "-DCMAKE_BUILD_TYPE=Release"
-- The C compiler identification is Clang 18.1.3
-- The CXX compiler identification is Clang 18.1.3
-- The ASM compiler identification is Clang with GNU-like command-line
-- Found assembler: /usr/bin/cc
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- bolt project is disabled
-- clang project is enabled
-- clang-tools-extra project is disabled
-- compiler-rt project is disabled
-- cross-project-tests project is disabled
-- libclc project is disabled
-- lld project is disabled
-- lldb project is disabled
-- mlir project is disabled
-- openmp project is disabled
-- polly project is disabled
-- flang project is disabled
-- libc project is disabled
-- Found Python3: /usr/bin/python3 (found suitable version "3.12.3", minimum required is "3.0") found components: Interpreter
-- Performing Test LLVM_LIBSTDCXX_MIN
-- Performing Test LLVM_LIBSTDCXX_MIN - Success
-- Performing Test LLVM_LIBSTDCXX_SOFT_ERROR
-- Performing Test LLVM_LIBSTDCXX_SOFT_ERROR - Success
-- Looking for __GLIBC__
-- Looking for __GLIBC__ - found
-- Looking for valgrind/valgrind.h
-- Looking for valgrind/valgrind.h - not found
-- Looking for FE_ALL_EXCEPT
-- Looking for FE_ALL_EXCEPT - found
-- Looking for FE_INEXACT
-- Looking for FE_INEXACT - found
-- Performing Test HAVE_BUILTIN_THREAD_POINTER
-- Performing Test HAVE_BUILTIN_THREAD_POINTER - Success
-- Looking for CrashReporterClient.h
-- Looking for CrashReporterClient.h - not found
-- Looking for linux/magic.h
-- Looking for linux/magic.h - found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Looking for pthread_rwlock_init in pthread
-- Looking for pthread_rwlock_init in pthread - found
-- Looking for pthread_mutex_lock in pthread
-- Looking for pthread_mutex_lock in pthread - found
-- Looking for dlopen in dl
-- Looking for dlopen in dl - found
-- Looking for shm_open in rt
-- Looking for shm_open in rt - found
-- Looking for pfm_initialize in pfm
-- Looking for pfm_initialize in pfm - not found
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
-- Found Threads: TRUE
-- Found ZLIB: /usr/lib/x86_64-linux-gnu/libz.so (found version "1.3")
-- Looking for compress2
-- Looking for compress2 - found
-- Looking for arc4random
-- Looking for arc4random - found
-- Looking for backtrace
-- Looking for backtrace - found
-- backtrace facility detected in default set of libraries
-- Found Backtrace: /usr/include
-- Performing Test C_SUPPORTS_WERROR_UNGUARDED_AVAILABILITY_NEW
-- Performing Test C_SUPPORTS_WERROR_UNGUARDED_AVAILABILITY_NEW - Success
-- Looking for __register_frame
-- Looking for __register_frame - found
-- Looking for __deregister_frame
-- Looking for __deregister_frame - found
-- Looking for __unw_add_dynamic_fde
-- Looking for __unw_add_dynamic_fde - not found
-- Looking for _Unwind_Backtrace
-- Looking for _Unwind_Backtrace - found
-- Looking for getpagesize
-- Looking for getpagesize - found
-- Looking for sysconf
-- Looking for sysconf - found
-- Looking for getrusage
-- Looking for getrusage - found
-- Looking for isatty
-- Looking for isatty - found
-- Looking for futimens
-- Looking for futimens - found
-- Looking for futimes
-- Looking for futimes - found
-- Looking for getauxval
-- Looking for getauxval - found
-- Looking for sigaltstack
-- Looking for sigaltstack - found
-- Looking for mallctl
-- Looking for mallctl - not found
-- Looking for mallinfo
-- Looking for mallinfo - found
-- Looking for mallinfo2
-- Looking for mallinfo2 - found
-- Looking for malloc_zone_statistics
-- Looking for malloc_zone_statistics - not found
-- Looking for posix_spawn
-- Looking for posix_spawn - found
-- Looking for pread
-- Looking for pread - found
-- Looking for sbrk
-- Looking for sbrk - found
-- Looking for strerror_r
-- Looking for strerror_r - found
-- Looking for strerror_s
-- Looking for strerror_s - not found
-- Looking for setenv
-- Looking for setenv - found
-- Performing Test HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC
-- Performing Test HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC - Failed
-- Performing Test HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
-- Performing Test HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC - Success
-- Looking for pthread_getname_np
-- Looking for pthread_getname_np - found
-- Looking for pthread_setname_np
-- Looking for pthread_setname_np - found
-- Looking for pthread_get_name_np
-- Looking for pthread_get_name_np - not found
-- Looking for pthread_set_name_np
-- Looking for pthread_set_name_np - not found
-- Looking for dlopen
-- Looking for dlopen - found
-- Looking for proc_pid_rusage
-- Looking for proc_pid_rusage - not found
-- Performing Test HAVE_CXX_ATOMICS_WITHOUT_LIB
-- Performing Test HAVE_CXX_ATOMICS_WITHOUT_LIB - Success
-- Performing Test HAVE_CXX_ATOMICS64_WITHOUT_LIB
-- Performing Test HAVE_CXX_ATOMICS64_WITHOUT_LIB - Success
-- Performing Test LLVM_HAS_ATOMICS
-- Performing Test LLVM_HAS_ATOMICS - Success
-- LLVM host triple: x86_64-unknown-linux-gnu
-- Native target architecture is X86
-- Threads enabled.
-- Doxygen disabled.
-- Ninja version: 1.11.1
-- Could NOT find OCaml (missing: OCAMLFIND OCAML_VERSION OCAML_STDLIB_PATH)
-- OCaml bindings disabled.
-- Found Python module pygments
-- Found Python module pygments.lexers.c_cpp
-- Found Python module yaml
-- LLVM default target triple: x86_64-unknown-linux-gnu
-- Performing Test C_SUPPORTS_FPIC
-- Performing Test C_SUPPORTS_FPIC - Success
-- Performing Test CXX_SUPPORTS_FPIC
-- Performing Test CXX_SUPPORTS_FPIC - Success
-- Building with -fPIC
-- Performing Test C_SUPPORTS_FNO_SEMANTIC_INTERPOSITION
-- Performing Test C_SUPPORTS_FNO_SEMANTIC_INTERPOSITION - Success
-- Performing Test CXX_SUPPORTS_FNO_SEMANTIC_INTERPOSITION
-- Performing Test CXX_SUPPORTS_FNO_SEMANTIC_INTERPOSITION - Success
-- Performing Test SUPPORTS_FVISIBILITY_INLINES_HIDDEN_FLAG
-- Performing Test SUPPORTS_FVISIBILITY_INLINES_HIDDEN_FLAG - Success
-- Performing Test LINKER_SUPPORTS_COLOR_DIAGNOSTICS
-- Performing Test LINKER_SUPPORTS_COLOR_DIAGNOSTICS - Success
-- Looking for os_signpost_interval_begin
-- Looking for os_signpost_interval_begin - not found
-- Linker detection: LLD
-- Performing Test LLVM_LINKER_SUPPORTS_B_SYMBOLIC_FUNCTIONS
-- Performing Test LLVM_LINKER_SUPPORTS_B_SYMBOLIC_FUNCTIONS - Success
-- Performing Test HAS_WERROR_GLOBAL_CTORS
-- Performing Test HAS_WERROR_GLOBAL_CTORS - Success
-- Performing Test LLVM_HAS_NOGLOBAL_CTOR_MUTEX
-- Performing Test LLVM_HAS_NOGLOBAL_CTOR_MUTEX - Success
-- Looking for __x86_64__
-- Looking for __x86_64__ - found
-- Found Git: /usr/bin/git (found version "2.43.0")
-- Looking for logf128
-- Looking for logf128 - not found
-- Targeting AArch64
-- Targeting AMDGPU
-- Targeting ARM
-- Targeting BPF
-- Targeting Hexagon
-- Targeting LoongArch
-- Targeting MSP430
-- Targeting Mips
-- Targeting NVPTX
-- Targeting PowerPC
-- Targeting RISCV
-- Targeting Sparc
-- Targeting SystemZ
-- Targeting WebAssembly
-- Targeting X86
-- Targeting AVR
-- Targeting M68k
-- Targeting CSKY
-- Targeting Xtensa
-- Looking for sys/resource.h
-- Looking for sys/resource.h - found
-- Looking for dlfcn.h
-- Looking for dlfcn.h - found
-- Looking for dladdr
-- Looking for dladdr - found
-- Clang version: 21.1.3-rust-1.93.0-nightly
-- Looking for include file sys/inotify.h
-- Looking for include file sys/inotify.h - found
-- Performing Test HAVE_LINKER_FLAG_LONG_PLT
-- Performing Test HAVE_LINKER_FLAG_LONG_PLT - Success
-- BugpointPasses ignored -- Loadable modules not supported on this platform.
-- Not building llvm-mt because libxml2 is not available
-- Configuring done (9.1s)
-- Generating done (0.7s)
-- Build files have been written to: /home/manuel/prog/rust_gpu/build/x86_64-unknown-linux-gnu/llvm/build
running: cd "/home/manuel/prog/rust_gpu/build/x86_64-unknown-linux-gnu/llvm/build" && DESTDIR="" LC_ALL="C" "cmake" "--build" "/home/manuel/prog/rust_gpu/build/x86_64-unknown-linux-gnu/llvm/build" "--target" "install" "--config" "Release" "--" "-j" "16"
[5345/5379] Performing configure step for 'builtins'
Not searching for unused variables given on the command line.
loading initial cache file /home/manuel/prog/rust_gpu/build/x86_64-unknown-linux-gnu/llvm/build/projects/builtins/tmp/builtins-cache-Release.cmake
-- The C compiler identification is Clang 21.1.3
-- The CXX compiler identification is Clang 21.1.3
-- The ASM compiler identification is Clang with GNU-like command-line
-- Found assembler: /home/manuel/prog/rust_gpu/build/x86_64-unknown-linux-gnu/llvm/build/./bin/clang
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /home/manuel/prog/rust_gpu/build/x86_64-unknown-linux-gnu/llvm/build/./bin/clang - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /home/manuel/prog/rust_gpu/build/x86_64-unknown-linux-gnu/llvm/build/./bin/clang++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Looking for unwind.h
-- Looking for unwind.h - found
-- Looking for rpc/xdr.h
-- Looking for rpc/xdr.h - not found
-- Could NOT find ZLIB (missing: ZLIB_LIBRARY) (found version "1.3")
CMake Warning at /home/manuel/prog/rust_gpu/src/llvm-project/compiler-rt/cmake/Modules/CompilerRTUtils.cmake:335 (message):
LLVMTestingSupport not found in LLVM_AVAILABLE_LIBS
Call Stack (most recent call first):
CMakeLists.txt:29 (load_llvm_config)
-- LLVM_MAIN_SRC_DIR: "/home/manuel/prog/rust_gpu/src/llvm-project/llvm"
-- Performing Test COMPILER_RT_HAS_FPIC_FLAG
-- Performing Test COMPILER_RT_HAS_FPIC_FLAG - Success
-- Performing Test COMPILER_RT_HAS_FPIE_FLAG
-- Performing Test COMPILER_RT_HAS_FPIE_FLAG - Success
-- Performing Test COMPILER_RT_HAS_FNO_BUILTIN_FLAG
-- Performing Test COMPILER_RT_HAS_FNO_BUILTIN_FLAG - Success
-- Performing Test COMPILER_RT_HAS_STD_C11_FLAG
-- Performing Test COMPILER_RT_HAS_STD_C11_FLAG - Success
-- Performing Test COMPILER_RT_HAS_VISIBILITY_HIDDEN_FLAG
-- Performing Test COMPILER_RT_HAS_VISIBILITY_HIDDEN_FLAG - Success
-- Performing Test COMPILER_RT_HAS_OMIT_FRAME_POINTER_FLAG
-- Performing Test COMPILER_RT_HAS_OMIT_FRAME_POINTER_FLAG - Success
-- Performing Test COMPILER_RT_HAS_FFREESTANDING_FLAG
-- Performing Test COMPILER_RT_HAS_FFREESTANDING_FLAG - Success
-- Performing Test COMPILER_RT_HAS_XRAY_COMPILER_FLAG
-- Performing Test COMPILER_RT_HAS_XRAY_COMPILER_FLAG - Success
-- Performing Test COMPILER_RT_HAS_FNO_LTO_FLAG
-- Performing Test COMPILER_RT_HAS_FNO_LTO_FLAG - Success
-- Performing Test COMPILER_RT_HAS_FNO_PROFILE_GENERATE_FLAG
-- Performing Test COMPILER_RT_HAS_FNO_PROFILE_GENERATE_FLAG - Success
-- Performing Test COMPILER_RT_HAS_FNO_PROFILE_INSTR_GENERATE_FLAG
-- Performing Test COMPILER_RT_HAS_FNO_PROFILE_INSTR_GENERATE_FLAG - Success
-- Performing Test COMPILER_RT_HAS_FNO_PROFILE_INSTR_USE_FLAG
-- Performing Test COMPILER_RT_HAS_FNO_PROFILE_INSTR_USE_FLAG - Success
-- Performing Test COMPILER_RT_HAS_WNO_PEDANTIC
-- Performing Test COMPILER_RT_HAS_WNO_PEDANTIC - Success
-- Performing Test COMPILER_RT_HAS_NOGPULIB_FLAG
-- Performing Test COMPILER_RT_HAS_NOGPULIB_FLAG - Success
-- Performing Test COMPILER_RT_HAS_FLTO_FLAG
-- Performing Test COMPILER_RT_HAS_FLTO_FLAG - Success
-- Performing Test COMPILER_RT_HAS_FCONVERGENT_FUNCTIONS_FLAG
-- Performing Test COMPILER_RT_HAS_FCONVERGENT_FUNCTIONS_FLAG - Success
-- Performing Test COMPILER_RT_HAS_CODE_OBJECT_VERSION_FLAG
-- Performing Test COMPILER_RT_HAS_CODE_OBJECT_VERSION_FLAG - Success
-- Performing Test COMPILER_RT_HAS_WBUILTIN_DECLARATION_MISMATCH_FLAG
-- Performing Test COMPILER_RT_HAS_WBUILTIN_DECLARATION_MISMATCH_FLAG - Failed
-- Performing Test COMPILER_RT_HAS_ZL_FLAG
-- Performing Test COMPILER_RT_HAS_ZL_FLAG - Failed
-- Performing Test COMPILER_RT_HAS_FCF_PROTECTION_FLAG
-- Performing Test COMPILER_RT_HAS_FCF_PROTECTION_FLAG - Success
-- Performing Test COMPILER_RT_HAS_NOSTDINCXX_FLAG
-- Performing Test COMPILER_RT_HAS_NOSTDINCXX_FLAG - Success
-- Performing Test COMPILER_RT_HAS_ATOMIC<truncated>Please see the issue for the entire body.
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