forked from OSchip/llvm-project
[AIX][compiler-rt] Build and install standalone libatomic
On AIX, we have to ship `libatomic.a` for compatibility. First, a new `clang_rt.atomic` is added. Second, use added cmake modules for AIX, we are able to build a compatible libatomic.a for AIX. The second step can't be perfectly implemented with cmake now since AIX's archive approach is kinda unique, i.e., archiving shared libraries into a static archive file. Reviewed By: jsji Differential Revision: https://reviews.llvm.org/D102155
This commit is contained in:
Kai Luo
parent
4b91f96a3e
commit
d56729b4a4
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@ -0,0 +1,53 @@
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include(CMakeParseArguments)
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include(CompilerRTUtils)
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function(get_aix_libatomic_default_link_flags link_flags export_list)
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set(${link_flags}
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"-Wl,-H512 -Wl,-D0 \
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-Wl,-T512 -Wl,-bhalt:4 -Wl,-bernotok \
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-Wl,-bnoentry -Wl,-bexport:${export_list} \
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-Wl,-bmodtype:SRE -Wl,-lc" PARENT_SCOPE)
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endfunction()
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macro(archive_aix_libatomic name)
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cmake_parse_arguments(LIB
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""
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""
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"ARCHS;PARENT_TARGET"
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${ARGN})
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set(shared_libraries_to_archive "")
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foreach (arch ${LIB_ARCHS})
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if(CAN_TARGET_${arch})
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set(output_dir "${CMAKE_CURRENT_BINARY_DIR}/libatomic-${arch}.dir")
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# FIXME: Target name should be kept consistent with definition
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# in AddCompilerRT.cmake added by
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# add_compiler_rt_runtime(<name> SHARED ...)
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set(target ${name}-dynamic-${arch})
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if(TARGET ${target})
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file(MAKE_DIRECTORY ${output_dir})
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add_custom_command(OUTPUT "${output_dir}/libatomic.so.1"
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POST_BUILD
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COMMAND ${CMAKE_COMMAND} -E
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copy "$<TARGET_FILE:${target}>"
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"${output_dir}/libatomic.so.1"
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DEPENDS ${target})
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list(APPEND shared_libraries_to_archive "${output_dir}/libatomic.so.1")
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endif()
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endif()
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endforeach()
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if(shared_libraries_to_archive)
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set(output_dir "")
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set(install_dir "")
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get_compiler_rt_output_dir(${COMPILER_RT_DEFAULT_TARGET_ARCH} output_dir)
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get_compiler_rt_install_dir(${COMPILER_RT_DEFAULT_TARGET_ARCH} install_dir)
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add_custom_command(OUTPUT "${output_dir}/libatomic.a"
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COMMAND ${CMAKE_AR} -X32_64 r "${output_dir}/libatomic.a"
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${shared_libraries_to_archive}
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DEPENDS ${shared_libraries_to_archive})
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install(FILES "${output_dir}/libatomic.a"
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DESTINATION ${install_dir})
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add_custom_target(aix-libatomic
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DEPENDS "${output_dir}/libatomic.a")
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endif()
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add_dependencies(${LIB_PARENT_TARGET} aix-libatomic)
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endmacro()
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@ -48,6 +48,10 @@ endif()
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include(builtin-config-ix)
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if(${CMAKE_SYSTEM_NAME} MATCHES "AIX")
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include(CompilerRTAIXUtils)
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endif()
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option(COMPILER_RT_BUILTINS_HIDE_SYMBOLS
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"Do not export any symbols from the static library." ON)
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@ -747,4 +751,42 @@ else ()
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endforeach ()
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endif ()
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option(COMPILER_RT_BUILD_STANDALONE_LIBATOMIC
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"Build standalone shared atomic library."
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OFF)
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if(COMPILER_RT_BUILD_STANDALONE_LIBATOMIC)
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add_custom_target(builtins-standalone-atomic)
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set(BUILTIN_DEPS "")
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if(${CMAKE_SYSTEM_NAME} MATCHES "AIX")
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if(NOT COMPILER_RT_LIBATOMIC_LINK_FLAGS)
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get_aix_libatomic_default_link_flags(COMPILER_RT_LIBATOMIC_LINK_FLAGS
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"${CMAKE_CURRENT_SOURCE_DIR}/ppc/atomic.exp")
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endif()
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# The compiler needs builtins to link any other binaries, so let
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# clang_rt.atomic be built after builtins.
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set(BUILTIN_DEPS builtins)
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endif()
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foreach (arch ${BUILTIN_SUPPORTED_ARCH})
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if(CAN_TARGET_${arch})
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add_compiler_rt_runtime(clang_rt.atomic
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SHARED
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ARCHS ${arch}
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SOURCES atomic.c
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LINK_FLAGS ${COMPILER_RT_LIBATOMIC_LINK_FLAGS}
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DEPS ${BUILTIN_DEPS}
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PARENT_TARGET builtins-standalone-atomic)
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endif()
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endforeach()
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# FIXME: On AIX, we have to archive built shared libraries into a static
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# archive, i.e., libatomic.a. Once cmake adds support of such usage for AIX,
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# this ad-hoc part can be removed.
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if(${CMAKE_SYSTEM_NAME} MATCHES "AIX")
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archive_aix_libatomic(clang_rt.atomic
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ARCHS ${BUILTIN_SUPPORTED_ARCH}
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PARENT_TARGET builtins-standalone-atomic)
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endif()
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add_dependencies(compiler-rt builtins-standalone-atomic)
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endif()
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add_dependencies(compiler-rt builtins)
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@ -0,0 +1,41 @@
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__atomic_compare_exchange
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__atomic_compare_exchange_1
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__atomic_compare_exchange_2
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__atomic_compare_exchange_4
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__atomic_compare_exchange_8
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__atomic_exchange
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__atomic_exchange_1
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__atomic_exchange_2
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__atomic_exchange_4
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__atomic_exchange_8
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__atomic_fetch_add_1
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__atomic_fetch_add_2
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__atomic_fetch_add_4
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__atomic_fetch_add_8
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__atomic_fetch_and_1
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__atomic_fetch_and_2
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__atomic_fetch_and_4
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__atomic_fetch_and_8
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__atomic_fetch_or_1
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__atomic_fetch_or_2
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__atomic_fetch_or_4
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__atomic_fetch_or_8
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__atomic_fetch_sub_1
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__atomic_fetch_sub_2
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__atomic_fetch_sub_4
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__atomic_fetch_sub_8
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__atomic_fetch_xor_1
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__atomic_fetch_xor_2
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__atomic_fetch_xor_4
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__atomic_fetch_xor_8
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__atomic_is_lock_free
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__atomic_load
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__atomic_load_1
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__atomic_load_2
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__atomic_load_4
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__atomic_load_8
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__atomic_store
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__atomic_store_1
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__atomic_store_2
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__atomic_store_4
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__atomic_store_8
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