f4334277
 Hu Chunming
提交3rdparty
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# Search TBB library: 4.1 - 4.4, 2017-2020, 2021+ (oneTBB)
#
# Own TBB (3rdparty/tbb):
# - set cmake option BUILD_TBB to ON
#
# External TBB (from system):
# - Fedora: install 'tbb-devel' package
# - Ubuntu: install 'libtbb-dev' package
#
# External TBB (from official site):
# - Linux/OSX:
# - in tbbvars.sh replace 'SUBSTITUTE_INSTALL_DIR_HERE' with absolute path to TBB dir
# - in terminal run 'source tbbvars.sh intel64 linux' ('source tbbvars.sh' in OSX)
# - Windows:
# - in terminal run 'tbbvars.bat intel64 vs2015'
#
# Return:
# - HAVE_TBB set to TRUE
# - "tbb" target exists and added to OPENCV_LINKER_LIBS
function(ocv_tbb_cmake_guess _found)
find_package(TBB QUIET COMPONENTS tbb PATHS "$ENV{TBBROOT}/cmake" "$ENV{TBBROOT}/lib/cmake/tbb")
if(TBB_FOUND)
if(NOT TARGET TBB::tbb)
message(WARNING "No TBB::tbb target found!")
return()
endif()
get_target_property(_lib TBB::tbb IMPORTED_LOCATION_RELEASE)
message(STATUS "Found TBB (cmake): ${_lib}")
get_target_property(_inc TBB::tbb INTERFACE_INCLUDE_DIRECTORIES)
add_library(tbb INTERFACE IMPORTED)
set_target_properties(tbb PROPERTIES
INTERFACE_LINK_LIBRARIES TBB::tbb
)
ocv_tbb_read_version("${_inc}" tbb)
set(${_found} TRUE PARENT_SCOPE)
endif()
endfunction()
function(ocv_tbb_env_verify)
if (NOT "$ENV{TBBROOT}" STREQUAL "")
# check that library and include dir are inside TBBROOT location
get_filename_component(_root "$ENV{TBBROOT}" ABSOLUTE)
get_filename_component(_lib "${TBB_ENV_LIB}" ABSOLUTE)
get_filename_component(_inc "${TBB_ENV_INCLUDE}" ABSOLUTE)
string(FIND "${_lib}" "${_root}" _lib_pos)
string(FIND "${_inc}" "${_root}" _inc_pos)
if (NOT (_lib_pos EQUAL 0 AND _inc_pos EQUAL 0))
message(SEND_ERROR
"Possible issue with TBB detection - TBBROOT is set, "
"but library/include path is not inside it:\n "
"TBBROOT: $ENV{TBBROOT}\n "
"(absolute): ${_root}\n "
"INCLUDE: ${_inc}\n "
"LIBRARY: ${_lib}\n")
endif()
endif()
endfunction()
function(ocv_tbb_env_guess _found)
find_path(TBB_ENV_INCLUDE NAMES "tbb/tbb.h" PATHS ENV CPATH NO_DEFAULT_PATH)
find_path(TBB_ENV_INCLUDE NAMES "tbb/tbb.h")
find_library(TBB_ENV_LIB NAMES "tbb" PATHS ENV LIBRARY_PATH NO_DEFAULT_PATH)
find_library(TBB_ENV_LIB NAMES "tbb")
find_library(TBB_ENV_LIB_DEBUG NAMES "tbb_debug" PATHS ENV LIBRARY_PATH NO_DEFAULT_PATH)
find_library(TBB_ENV_LIB_DEBUG NAMES "tbb_debug")
if (TBB_ENV_INCLUDE AND (TBB_ENV_LIB OR TBB_ENV_LIB_DEBUG))
ocv_tbb_env_verify()
add_library(tbb UNKNOWN IMPORTED)
set_target_properties(tbb PROPERTIES
IMPORTED_LOCATION "${TBB_ENV_LIB}"
INTERFACE_INCLUDE_DIRECTORIES "${TBB_ENV_INCLUDE}"
)
if (TBB_ENV_LIB_DEBUG)
set_target_properties(tbb PROPERTIES
IMPORTED_LOCATION_DEBUG "${TBB_ENV_LIB_DEBUG}"
)
endif()
# workaround: system TBB library is used for linking instead of provided
if(CV_GCC)
get_filename_component(_dir "${TBB_ENV_LIB}" DIRECTORY)
set_target_properties(tbb PROPERTIES INTERFACE_LINK_LIBRARIES "-L${_dir}")
endif()
ocv_tbb_read_version("${TBB_ENV_INCLUDE}" tbb)
if(NOT (TBB_INTERFACE_VERSION LESS 12000)) # >= 12000, oneTBB 2021+
# avoid "defaultlib" requirement of tbb12.lib (we are using absolute path to 'tbb.lib' only)
# https://github.com/oneapi-src/oneTBB/blame/2dba2072869a189b9fdab3ffa431d3ea49059a19/include/oneapi/tbb/detail/_config.h#L334
if(NOT (CMAKE_VERSION VERSION_LESS "3.16.0")) # https://gitlab.kitware.com/cmake/cmake/-/issues/19434
target_compile_definitions(tbb INTERFACE "__TBB_NO_IMPLICIT_LINKAGE=1")
else()
set_target_properties(tbb PROPERTIES INTERFACE_COMPILE_DEFINITIONS "__TBB_NO_IMPLICIT_LINKAGE=1")
endif()
endif()
message(STATUS "Found TBB (env): ${TBB_ENV_LIB}")
set(${_found} TRUE PARENT_SCOPE)
endif()
endfunction()
function(ocv_tbb_read_version _path _tgt)
find_file(TBB_VER_FILE oneapi/tbb/version.h "${_path}" NO_DEFAULT_PATH CMAKE_FIND_ROOT_PATH_BOTH)
find_file(TBB_VER_FILE tbb/tbb_stddef.h "${_path}" NO_DEFAULT_PATH CMAKE_FIND_ROOT_PATH_BOTH)
ocv_parse_header("${TBB_VER_FILE}" TBB_VERSION_LINES TBB_VERSION_MAJOR TBB_VERSION_MINOR TBB_INTERFACE_VERSION CACHE)
endfunction()
#=====================================================================
if(BUILD_TBB)
add_subdirectory("${OpenCV_SOURCE_DIR}/3rdparty/tbb")
if(NOT TARGET tbb)
return()
endif()
set(HAVE_TBB TRUE)
endif()
if(NOT HAVE_TBB)
ocv_tbb_cmake_guess(HAVE_TBB)
endif()
if(NOT HAVE_TBB)
ocv_tbb_env_guess(HAVE_TBB)
endif()
if(TBB_INTERFACE_VERSION LESS 6000) # drop support of versions < 4.0
set(HAVE_TBB FALSE)
endif()
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