OpenHarmony doesn't support pthread_setcancelstate.

[eagleoflqj]

Like Android, OpenHarmony doesn't support pthread_setcancelstate as well. The macro __OHOS__ can be found in llvm.

[4/5] Building CXX object libs/iostreams/CMakeFiles/boost_iostreams.dir/src/mapped_file.cpp.o FAILED: libs/iostreams/CMakeFiles/boost_iostreams.dir/src/mapped_file.cpp.o /tmp/command-line-tools/sdk/default/openharmony/native/llvm/bin/clang++ --target=x86_64-linux-ohos --gcc-toolchain=/tmp/command-line-tools/sdk/default/openharmony/native/llvm --sysroot=/tmp/command-line-tools/sdk/default/openharmony/native/sysroot -DBOOST_IOSTREAMS_NO_LIB -DBOOST_IOSTREAMS_STATIC_LINK -DBOOST_RANDOM_NO_LIB -DBOOST_RANDOM_STATIC_LINK -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/iostreams/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/assert/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/config/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/core/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/static_assert/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/throw_exception/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/detail/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/preprocessor/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/type_traits/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/function/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/bind/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/integer/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/iterator/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/concept_check/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/function_types/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/mpl/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/predef/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/utility/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/io/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/fusion/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/container_hash/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/describe/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/mp11/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/tuple/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/typeof/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/functional/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/optional/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/move/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/smart_ptr/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/random/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/array/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/dynamic_bitset/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/range/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/conversion/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/regex/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/system/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/variant2/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/winapi/include -I/mnt/storage/github/fcitx5-prebuilder/boost/libs/numeric/conversion/include -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -fno-addrsig -Wa,--noexecstack -Wformat -Werror=format-security -D__MUSL__ -O2 -DNDEBUG -fPIC -fvisibility=hidden -fvisibility-inlines-hidden -MD -MT libs/iostreams/CMakeFiles/boost_iostreams.dir/src/mapped_file.cpp.o -MF libs/iostreams/CMakeFiles/boost_iostreams.dir/src/mapped_file.cpp.o.d -o libs/iostreams/CMakeFiles/boost_iostreams.dir/src/mapped_file.cpp.o -c /mnt/storage/github/fcitx5-prebuilder/boost/libs/iostreams/src/mapped_file.cpp clang++: warning: argument unused during compilation: '--gcc-toolchain=/tmp/command-line-tools/sdk/default/openharmony/native/llvm' [-Wunused-command-line-argument] In file included from /mnt/storage/github/fcitx5-prebuilder/boost/libs/iostreams/src/mapped_file.cpp:19: In file included from /mnt/storage/github/fcitx5-prebuilder/boost/libs/iostreams/include/boost/iostreams/device/mapped_file.hpp:29: In file included from /mnt/storage/github/fcitx5-prebuilder/boost/libs/smart_ptr/include/boost/shared_ptr.hpp:17: In file included from /mnt/storage/github/fcitx5-prebuilder/boost/libs/smart_ptr/include/boost/smart_ptr/shared_ptr.hpp:30: In file included from /mnt/storage/github/fcitx5-prebuilder/boost/libs/smart_ptr/include/boost/smart_ptr/detail/spinlock_pool.hpp:25: In file included from /mnt/storage/github/fcitx5-prebuilder/boost/libs/smart_ptr/include/boost/smart_ptr/detail/spinlock.hpp:42: In file included from /mnt/storage/github/fcitx5-prebuilder/boost/libs/smart_ptr/include/boost/smart_ptr/detail/spinlock_gcc_atomic.hpp:14: In file included from /mnt/storage/github/fcitx5-prebuilder/boost/libs/smart_ptr/include/boost/smart_ptr/detail/yield_k.hpp:22: In file included from /mnt/storage/github/fcitx5-prebuilder/boost/libs/core/include/boost/core/yield_primitives.hpp:10: /mnt/storage/github/fcitx5-prebuilder/boost/libs/core/include/boost/core/detail/sp_thread_sleep.hpp:73:5: error: use of undeclared identifier 'pthread_setcancelstate' pthread_setcancelstate( PTHREAD_CANCEL_DISABLE, &oldst ); ^ /mnt/storage/github/fcitx5-prebuilder/boost/libs/core/include/boost/core/detail/sp_thread_sleep.hpp:90:5: error: use of undeclared identifier 'pthread_setcancelstate' pthread_setcancelstate( oldst, &oldst ); ^ 2 errors generated. ninja: build stopped: subcommand failed.