Bug#1068185: llvm-toolchain-16: FTBFS on armel: cxa_guard.cpp:(.text.unlikely.__cxa_guard_acquire+0xc): undefined reference to `__atomic_load_1'

[Sebastian Ramacher]

Source: llvm-toolchain-16
Version: 1:16.0.6-24
Severity: serious
Tags: ftbfs
Justification: fails to build from source (but built successfully in the past)
X-Debbugs-Cc: sramacher at debian.org

https://buildd.debian.org/status/fetch.php?pkg=llvm-toolchain-16&arch=armel&ver=1%3A16.0.6-24&stamp=1711530825&raw=0

FAILED: /<<PKGBUILDDIR>>/build-llvm/lib/libc++abi.so.1.0 
: && /<<PKGBUILDDIR>>/build-llvm/./bin/clang++ --target=arm-linux-gnueabi -fPIC -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -Wno-unused-command-line-argument -march=armv5t -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_TIME_BITS=64 -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -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 -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -fdebug-prefix-map=/<<PKGBUILDDIR>>/build-llvm/runtimes/runtimes-bins=build-llvm/runtimes/runtimes-bins -fdebug-prefix-map=/<<PKGBUILDDIR>>/= -no-canonical-prefixes -ffile-prefix-map=/<<PKGBUILDDIR>>/build-llvm/runtimes/runtimes-bins=build-llvm/runtimes/runtimes-bins -ffile-prefix-map=/<<PKGBUILDDIR>>/= -no-canonical-prefixes  -O3 -DNDEBUG  -Wl,-z,relro -Wl,--build-id,--as-needed -latomic -Wl,-z,defs -Wl,-z,nodelete  -nostdlib++ -shared -Wl,-soname,libc++abi.so.1 -o /<<PKGBUILDDIR>>/build-llvm/lib/libc++abi.so.1.0 libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_aux_runtime.cpp.o libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_default_handlers.cpp.o libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_demangle.cpp.o libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_exception_storage.cpp.o libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_guard.cpp.o libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_handlers.cpp.o libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_vector.cpp.o libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_virtual.cpp.o libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/stdlib_exception.cpp.o libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/stdlib_stdexcept.cpp.o libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/stdlib_typeinfo.cpp.o libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/abort_message.cpp.o libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/fallback_malloc.cpp.o libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/private_typeinfo.cpp.o libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/stdlib_new_delete.cpp.o libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_exception.cpp.o libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_personality.cpp.o libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_thread_atexit.cpp.o  -lpthread  -lc  -lgcc  -lgcc_s && :
/usr/bin/arm-linux-gnueabi-ld: libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_guard.cpp.o: in function `__cxa_guard_acquire':
cxa_guard.cpp:(.text.unlikely.__cxa_guard_acquire+0xc): undefined reference to `__atomic_load_1'
/usr/bin/arm-linux-gnueabi-ld: libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_guard.cpp.o: in function `__cxa_guard_release':
cxa_guard.cpp:(.text.unlikely.__cxa_guard_release+0x14): undefined reference to `__atomic_store_1'
/usr/bin/arm-linux-gnueabi-ld: libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_default_handlers.cpp.o: in function `std::set_unexpected(void (*)())':
cxa_default_handlers.cpp:(.text._ZSt14set_unexpectedPFvvE+0x1c): undefined reference to `__atomic_exchange_4'
/usr/bin/arm-linux-gnueabi-ld: libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_default_handlers.cpp.o: in function `std::set_terminate(void (*)())':
cxa_default_handlers.cpp:(.text._ZSt13set_terminatePFvvE+0x1c): undefined reference to `__atomic_exchange_4'
/usr/bin/arm-linux-gnueabi-ld: libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_default_handlers.cpp.o: in function `std::set_new_handler(void (*)())':
cxa_default_handlers.cpp:(.text._ZSt15set_new_handlerPFvvE+0x10): undefined reference to `__atomic_exchange_4'
/usr/bin/arm-linux-gnueabi-ld: libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_handlers.cpp.o: in function `std::get_unexpected()':
cxa_handlers.cpp:(.text._ZSt14get_unexpectedv+0xc): undefined reference to `__atomic_load_4'
/usr/bin/arm-linux-gnueabi-ld: libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_handlers.cpp.o: in function `std::get_terminate()':
cxa_handlers.cpp:(.text._ZSt13get_terminatev+0xc): undefined reference to `__atomic_load_4'
/usr/bin/arm-linux-gnueabi-ld: libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_handlers.cpp.o: in function `std::get_new_handler()':
cxa_handlers.cpp:(.text._ZSt15get_new_handlerv+0xc): undefined reference to `__atomic_load_4'
/usr/bin/arm-linux-gnueabi-ld: libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/stdlib_stdexcept.cpp.o: in function `std::logic_error::~logic_error()':
stdlib_stdexcept.cpp:(.text._ZNSt11logic_errorD2Ev+0x28): undefined reference to `__atomic_fetch_add_4'
/usr/bin/arm-linux-gnueabi-ld: libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/stdlib_stdexcept.cpp.o: in function `std::runtime_error::~runtime_error()':
stdlib_stdexcept.cpp:(.text._ZNSt13runtime_errorD2Ev+0x28): undefined reference to `__atomic_fetch_add_4'
/usr/bin/arm-linux-gnueabi-ld: libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_exception.cpp.o: in function `__cxxabiv1::exception_cleanup_func(_Unwind_Reason_Code, _Unwind_Control_Block*)':
cxa_exception.cpp:(.text._ZN10__cxxabiv1L22exception_cleanup_funcE19_Unwind_Reason_CodeP21_Unwind_Control_Block+0x1c): undefined reference to `__atomic_fetch_add_4'
/usr/bin/arm-linux-gnueabi-ld: libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_exception.cpp.o: in function `__cxa_end_catch':
cxa_exception.cpp:(.text.__cxa_end_catch+0xe8): undefined reference to `__atomic_fetch_add_4'
/usr/bin/arm-linux-gnueabi-ld: libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_exception.cpp.o: in function `__cxa_decrement_exception_refcount':
cxa_exception.cpp:(.text.__cxa_decrement_exception_refcount+0x1c): undefined reference to `__atomic_fetch_add_4'
/usr/bin/arm-linux-gnueabi-ld: libcxxabi/src/CMakeFiles/cxxabi_shared_objects.dir/cxa_exception.cpp.o:cxa_exception.cpp:(.text.__cxa_increment_exception_refcount+0x14): more undefined references to `__atomic_fetch_add_4' follow
clang++: error: linker command failed with exit code 1 (use -v to see invocation)


Cheers
-- 
Sebastian Ramacher