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Place a useful cmake function 'link_to_faiss_lib' into a separate file (
facebookresearch#3939) Summary: Add `cmake/link_to_faiss_lib.cmake`, which exposes a useful and reusable CMake `link_to_faiss_lib()` function Pull Request resolved: facebookresearch#3939 Reviewed By: mnorris11 Differential Revision: D64250261 Pulled By: mengdilin fbshipit-source-id: bab5b7fab8effb33cb73024eb7eefd2319998e5b
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# Copyright (c) Facebook, Inc. and its affiliates. | ||
# All rights reserved. | ||
# | ||
# This source code is licensed under the BSD-style license found in the | ||
# LICENSE file in the root directory of this source tree. | ||
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function(link_to_faiss_lib target) | ||
if(NOT FAISS_OPT_LEVEL STREQUAL "avx2" AND NOT FAISS_OPT_LEVEL STREQUAL "avx512" AND NOT FAISS_OPT_LEVEL STREQUAL "sve") | ||
target_link_libraries(${target} PRIVATE faiss) | ||
endif() | ||
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if(FAISS_OPT_LEVEL STREQUAL "avx2") | ||
if(NOT WIN32) | ||
target_compile_options(${target} PRIVATE $<$<COMPILE_LANGUAGE:CXX>:-mavx2 -mfma>) | ||
else() | ||
target_compile_options(${target} PRIVATE $<$<COMPILE_LANGUAGE:CXX>:/arch:AVX2>) | ||
endif() | ||
target_link_libraries(${target} PRIVATE faiss_avx2) | ||
endif() | ||
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if(FAISS_OPT_LEVEL STREQUAL "avx512") | ||
if(NOT WIN32) | ||
target_compile_options(${target} PRIVATE $<$<COMPILE_LANGUAGE:CXX>:-mavx2 -mfma -mavx512f -mavx512f -mavx512cd -mavx512vl -mavx512dq -mavx512bw>) | ||
else() | ||
target_compile_options(${target} PRIVATE $<$<COMPILE_LANGUAGE:CXX>:/arch:AVX512>) | ||
endif() | ||
target_link_libraries(${target} PRIVATE faiss_avx512) | ||
endif() | ||
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||
if(FAISS_OPT_LEVEL STREQUAL "sve") | ||
if(NOT WIN32) | ||
if("${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_DEBUG} " MATCHES "(^| )-march=native") | ||
# Do nothing, expect SVE to be enabled by -march=native | ||
elseif("${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_DEBUG} " MATCHES "(^| )(-march=armv[0-9]+(\\.[1-9]+)?-[^+ ](\\+[^+$ ]+)*)") | ||
# Add +sve | ||
target_compile_options(${target} PRIVATE $<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CONFIG:DEBUG>>:${CMAKE_MATCH_2}+sve>) | ||
elseif(NOT "${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_DEBUG} " MATCHES "(^| )-march=armv") | ||
# No valid -march, so specify -march=armv8-a+sve as the default | ||
target_compile_options(${target} PRIVATE $<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CONFIG:DEBUG>>:-march=armv8-a+sve>) | ||
endif() | ||
if("${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_RELEASE} " MATCHES "(^| )-march=native") | ||
# Do nothing, expect SVE to be enabled by -march=native | ||
elseif("${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_RELEASE} " MATCHES "(^| )(-march=armv[0-9]+(\\.[1-9]+)?-[^+ ](\\+[^+$ ]+)*)") | ||
# Add +sve | ||
target_compile_options(${target} PRIVATE $<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CONFIG:RELEASE>>:${CMAKE_MATCH_2}+sve>) | ||
elseif(NOT "${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_RELEASE} " MATCHES "(^| )-march=armv") | ||
# No valid -march, so specify -march=armv8-a+sve as the default | ||
target_compile_options(${target} PRIVATE $<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CONFIG:RELEASE>>:-march=armv8-a+sve>) | ||
endif() | ||
else() | ||
# TODO: support Windows | ||
endif() | ||
target_link_libraries(${target} PRIVATE faiss_sve) | ||
endif() | ||
endfunction() |
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