Open Source Computer Vision Library https://opencv.org/
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

116 lines
3.8 KiB

# If protobuf is found - libprotobuf target is available
set(HAVE_PROTOBUF FALSE)
if(NOT WITH_PROTOBUF)
return()
endif()
ocv_option(BUILD_PROTOBUF "Force to build libprotobuf runtime from sources" ON)
ocv_option(PROTOBUF_UPDATE_FILES "Force rebuilding .proto files (protoc should be available)" OFF)
# BUILD_PROTOBUF=OFF: Custom manual protobuf configuration (see find_package(Protobuf) for details):
# - Protobuf_INCLUDE_DIR
# - Protobuf_LIBRARY
# - Protobuf_PROTOC_EXECUTABLE
function(get_protobuf_version version include)
file(STRINGS "${include}/google/protobuf/stubs/common.h" ver REGEX "#define GOOGLE_PROTOBUF_VERSION [0-9]+")
string(REGEX MATCHALL "[0-9]+" ver ${ver})
math(EXPR major "${ver} / 1000000")
math(EXPR minor "${ver} / 1000 % 1000")
math(EXPR patch "${ver} % 1000")
set(${version} "${major}.${minor}.${patch}" PARENT_SCOPE)
endfunction()
if(BUILD_PROTOBUF)
ocv_assert(NOT PROTOBUF_UPDATE_FILES)
add_subdirectory("${OpenCV_SOURCE_DIR}/3rdparty/protobuf")
set(Protobuf_LIBRARIES "libprotobuf")
set(HAVE_PROTOBUF TRUE)
else()
# we still need this for command PROTOBUF_GENERATE_CPP.
set(protobuf_MODULE_COMPATIBLE ON)
unset(Protobuf_VERSION CACHE)
find_package(Protobuf QUIET CONFIG)
if(NOT Protobuf_FOUND)
find_package(Protobuf QUIET)
endif()
# Backwards compatibility
# Define camel case versions of input variables
foreach(UPPER
PROTOBUF_FOUND
PROTOBUF_LIBRARY
PROTOBUF_INCLUDE_DIR
PROTOBUF_VERSION
)
if (DEFINED ${UPPER})
string(REPLACE "PROTOBUF_" "Protobuf_" Camel ${UPPER})
if (NOT DEFINED ${Camel})
set(${Camel} ${${UPPER}})
endif()
endif()
endforeach()
# end of compatibility block
if(Protobuf_FOUND)
if(TARGET protobuf::libprotobuf)
set(Protobuf_LIBRARIES "protobuf::libprotobuf")
else()
add_library(libprotobuf UNKNOWN IMPORTED)
set_target_properties(libprotobuf PROPERTIES
IMPORTED_LOCATION "${Protobuf_LIBRARY}"
INTERFACE_INCLUDE_DIRECTORIES "${Protobuf_INCLUDE_DIR}"
INTERFACE_SYSTEM_INCLUDE_DIRECTORIES "${Protobuf_INCLUDE_DIR}"
)
get_protobuf_version(Protobuf_VERSION "${Protobuf_INCLUDE_DIR}")
set(Protobuf_LIBRARIES "libprotobuf")
endif()
set(HAVE_PROTOBUF TRUE)
endif()
endif()
# See https://github.com/opencv/opencv/issues/24369
# In Protocol Buffers v22.0 and later drops C++11 support and depends abseil-cpp.
# Details: https://protobuf.dev/news/2022-08-03/
# And if std::text_view is in abseil-cpp requests C++17 and later.
if(HAVE_PROTOBUF)
if(NOT (Protobuf_VERSION VERSION_LESS 22))
if((CMAKE_CXX_STANDARD EQUAL 98) OR (CMAKE_CXX_STANDARD LESS 17))
message(STATUS "CMAKE_CXX_STANDARD=${CMAKE_CXX_STANDARD} is too old to support protobuf(${Protobuf_VERSION}) and/or abseil-cpp. Use C++17 or later. Turning HAVE_PROTOBUF off")
set(HAVE_PROTOBUF FALSE)
endif()
endif()
endif()
if(HAVE_PROTOBUF AND PROTOBUF_UPDATE_FILES AND NOT COMMAND PROTOBUF_GENERATE_CPP)
message(FATAL_ERROR "Can't configure protobuf dependency (BUILD_PROTOBUF=${BUILD_PROTOBUF} PROTOBUF_UPDATE_FILES=${PROTOBUF_UPDATE_FILES})")
endif()
if(HAVE_PROTOBUF)
list(APPEND CUSTOM_STATUS protobuf)
if(NOT BUILD_PROTOBUF)
unset( __location)
if(TARGET "${Protobuf_LIBRARIES}")
get_target_property(__location "${Protobuf_LIBRARIES}" IMPORTED_LOCATION_RELEASE)
if(NOT __location)
get_target_property(__location "${Protobuf_LIBRARIES}" IMPORTED_LOCATION)
endif()
endif()
if(NOT __location)
if(Protobuf_LIBRARY)
set(__location "${Protobuf_LIBRARY}")
else()
set(__location "${Protobuf_LIBRARIES}")
endif()
endif()
endif()
list(APPEND CUSTOM_STATUS_protobuf " Protobuf:"
BUILD_PROTOBUF THEN "build (${Protobuf_VERSION})"
ELSE "${__location} (${Protobuf_VERSION})")
endif()