ClickHouse/cmake/freebsd/default_libs.cmake

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CMake
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set (DEFAULT_LIBS "-nodefaultlibs")
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if (${CMAKE_SYSTEM_PROCESSOR} STREQUAL "amd64")
set(system_processor "x86_64")
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else ()
set(system_processor "${CMAKE_SYSTEM_PROCESSOR}")
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endif ()
file(GLOB bprefix "/usr/local/llvm${COMPILER_VERSION_MAJOR}/lib/clang/${COMPILER_VERSION_MAJOR}/lib/${system_processor}-portbld-freebsd*/")
message(STATUS "-Bprefix: ${bprefix}")
execute_process(COMMAND
${CMAKE_CXX_COMPILER} -Bprefix=${bprefix} --print-file-name=libclang_rt.builtins-${system_processor}.a
OUTPUT_VARIABLE BUILTINS_LIBRARY
COMMAND_ERROR_IS_FATAL ANY
OUTPUT_STRIP_TRAILING_WHITESPACE)
# --print-file-name simply prints what you passed in case of nothing was resolved, so let's try one other possible option
if (BUILTINS_LIBRARY STREQUAL "libclang_rt.builtins-${system_processor}.a")
execute_process(COMMAND
${CMAKE_CXX_COMPILER} -Bprefix=${bprefix} --print-file-name=libclang_rt.builtins.a
OUTPUT_VARIABLE BUILTINS_LIBRARY
COMMAND_ERROR_IS_FATAL ANY
OUTPUT_STRIP_TRAILING_WHITESPACE)
endif()
if (BUILTINS_LIBRARY STREQUAL "libclang_rt.builtins.a")
message(FATAL_ERROR "libclang_rt.builtins had not been found")
endif()
set (DEFAULT_LIBS "${DEFAULT_LIBS} ${BUILTINS_LIBRARY} ${COVERAGE_OPTION} -lc -lm -lrt -lpthread")
message(STATUS "Default libraries: ${DEFAULT_LIBS}")
set(CMAKE_CXX_STANDARD_LIBRARIES ${DEFAULT_LIBS})
set(CMAKE_C_STANDARD_LIBRARIES ${DEFAULT_LIBS})
# Unfortunately '-pthread' doesn't work with '-nodefaultlibs'.
# Just make sure we have pthreads at all.
set(THREADS_PREFER_PTHREAD_FLAG ON)
find_package(Threads REQUIRED)
include (cmake/unwind.cmake)
include (cmake/cxx.cmake)
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link_libraries(global-group)
target_link_libraries(global-group INTERFACE
$<TARGET_PROPERTY:global-libs,INTERFACE_LINK_LIBRARIES>
)