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if(__NNPACK_INCLUDED)
return()
endif()
set(__NNPACK_INCLUDED TRUE)
if(NOT USE_NNPACK)
return()
endif()
##############################################################################
# NNPACK is built together with Caffe2
# By default, it builds code from third-party/NNPACK submodule.
# Define NNPACK_SOURCE_DIR to build with a different version.
##############################################################################
##############################################################################
# (1) MSVC - unsupported
##############################################################################
if(MSVC)
message(WARNING "NNPACK not supported on MSVC yet. Turn this warning off by USE_NNPACK=OFF.")
set(USE_NNPACK OFF)
return()
endif()
##############################################################################
# (2) Anything but x86, x86-64, ARM, ARM64 - unsupported
##############################################################################
if(CMAKE_SYSTEM_PROCESSOR)
if(NOT CMAKE_SYSTEM_PROCESSOR MATCHES "^(i686|x86_64|armv5te|armv7-a|armv7l|arm64|aarch64)$")
message(WARNING "NNPACK is not supported on ${CMAKE_SYSTEM_PROCESSOR} processors. "
"The only supported architectures are x86, x86-64, ARM, and ARM64. "
"Turn this warning off by USE_NNPACK=OFF.")
set(USE_NNPACK OFF)
return()
endif()
endif()
##############################################################################
# (3) Android, iOS, Linux, macOS - supported
##############################################################################
if(ANDROID OR IOS OR ${CMAKE_SYSTEM_NAME} STREQUAL "Linux" OR ${CMAKE_SYSTEM_NAME} STREQUAL "Darwin")
message(STATUS "Brace yourself, we are building NNPACK")
set(CAFFE2_THIRD_PARTY_ROOT ${PROJECT_SOURCE_DIR}/third_party)
# Directories for NNPACK dependencies submoduled in Caffe2
set(PYTHON_PEACHPY_SOURCE_DIR "${CAFFE2_THIRD_PARTY_ROOT}/python-peachpy" CACHE STRING "PeachPy (Python package) source directory")
if(NOT DEFINED CPUINFO_SOURCE_DIR)
set(CPUINFO_SOURCE_DIR "${CAFFE2_THIRD_PARTY_ROOT}/cpuinfo" CACHE STRING "cpuinfo source directory")
endif()
set(NNPACK_SOURCE_DIR "${CAFFE2_THIRD_PARTY_ROOT}/NNPACK" CACHE STRING "NNPACK source directory")
set(FP16_SOURCE_DIR "${CAFFE2_THIRD_PARTY_ROOT}/FP16" CACHE STRING "FP16 source directory")
set(FXDIV_SOURCE_DIR "${CAFFE2_THIRD_PARTY_ROOT}/FXdiv" CACHE STRING "FXdiv source directory")
set(PSIMD_SOURCE_DIR "${CAFFE2_THIRD_PARTY_ROOT}/psimd" CACHE STRING "PSimd source directory")
set(PTHREADPOOL_SOURCE_DIR "${CAFFE2_THIRD_PARTY_ROOT}/pthreadpool" CACHE STRING "pthreadpool source directory")
set(GOOGLETEST_SOURCE_DIR "${CAFFE2_THIRD_PARTY_ROOT}/googletest" CACHE STRING "Google Test source directory")
if(NOT TARGET nnpack)
set(NNPACK_BUILD_TESTS OFF CACHE BOOL "")
set(NNPACK_BUILD_BENCHMARKS OFF CACHE BOOL "")
set(NNPACK_LIBRARY_TYPE "static" CACHE STRING "")
set(PTHREADPOOL_LIBRARY_TYPE "static" CACHE STRING "")
set(CPUINFO_LIBRARY_TYPE "static" CACHE STRING "")
add_subdirectory(
"${NNPACK_SOURCE_DIR}"
"${CONFU_DEPENDENCIES_BINARY_DIR}/NNPACK")
# We build static versions of nnpack and pthreadpool but link
# them into a shared library for Caffe2, so they need PIC.
set_property(TARGET nnpack PROPERTY POSITION_INDEPENDENT_CODE ON)
set_property(TARGET pthreadpool PROPERTY POSITION_INDEPENDENT_CODE ON)
set_property(TARGET cpuinfo PROPERTY POSITION_INDEPENDENT_CODE ON)
endif()
set(NNPACK_FOUND TRUE)
if(TARGET nnpack)
set(NNPACK_INCLUDE_DIRS
$<TARGET_PROPERTY:nnpack,INCLUDE_DIRECTORIES>
$<TARGET_PROPERTY:pthreadpool,INCLUDE_DIRECTORIES>)
set(NNPACK_LIBRARIES $<TARGET_OBJECTS:nnpack> $<TARGET_OBJECTS:cpuinfo>)
endif()
return()
endif()
##############################################################################
# (4) Catch-all: not supported.
##############################################################################
message(WARNING "Unknown platform - I don't know how to build NNPACK. "
"See cmake/External/nnpack.cmake for details.")
set(USE_NNPACK OFF)
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