ClickHouse/contrib/base64-cmake/CMakeLists.txt

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SET(LIBRARY_DIR ${ClickHouse_SOURCE_DIR}/contrib/base64)
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add_library(base64_scalar OBJECT ${LIBRARY_DIR}/turbob64c.c ${LIBRARY_DIR}/turbob64d.c)
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add_library(base64_ssse3 OBJECT ${LIBRARY_DIR}/turbob64sse.c) # This file also contains code for ARM NEON
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if (ARCH_AMD64)
add_library(base64_avx OBJECT ${LIBRARY_DIR}/turbob64sse.c) # This is not a mistake. One file is compiled twice.
add_library(base64_avx2 OBJECT ${LIBRARY_DIR}/turbob64avx2.c)
endif ()
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target_compile_options(base64_scalar PRIVATE -falign-loops)
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if (ARCH_AMD64)
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target_compile_options(base64_ssse3 PRIVATE -mno-avx -mno-avx2 -mssse3 -falign-loops)
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target_compile_options(base64_avx PRIVATE -falign-loops -mavx)
target_compile_options(base64_avx2 PRIVATE -falign-loops -mavx2)
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else ()
target_compile_options(base64_ssse3 PRIVATE -falign-loops)
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endif ()
if (ARCH_AMD64)
add_library(base64
$<TARGET_OBJECTS:base64_scalar>
$<TARGET_OBJECTS:base64_ssse3>
$<TARGET_OBJECTS:base64_avx>
$<TARGET_OBJECTS:base64_avx2>)
else ()
add_library(base64
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$<TARGET_OBJECTS:base64_scalar>
$<TARGET_OBJECTS:base64_ssse3>)
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endif ()
target_include_directories(base64 SYSTEM PUBLIC ${LIBRARY_DIR})
if (XCODE OR XCODE_VERSION)
# https://gitlab.kitware.com/cmake/cmake/issues/17457
# Some native build systems may not like targets that have only object files, so consider adding at least one real source file
# This applies to Xcode.
if (NOT EXISTS "${CMAKE_CURRENT_BINARY_DIR}/dummy.c")
file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/dummy.c" "")
endif ()
target_sources(base64 PRIVATE "${CMAKE_CURRENT_BINARY_DIR}/dummy.c")
endif ()