1 # Standalone OpenCV plugins build scripts
3 # Useful OpenCV common build variables:
4 # - CMAKE_BUILD_TYPE=Release/Debug
5 # - BUILD_WITH_DEBUG_INFO=ON
6 # - ENABLE_BUILD_HARDENING=ON
8 # Plugin configuration variables:
9 # - OPENCV_PLUGIN_DEPS - set of extra dependencies (modules), used for include dirs, target_link_libraries
10 # - OPENCV_PLUGIN_SUFFIX
11 # - OPENCV_PLUGIN_NAME
12 # - OPENCV_PLUGIN_OUTPUT_NAME_FULL (overrides both OPENCV_PLUGIN_NAME / OPENCV_PLUGIN_SUFFIX)
14 #=============================================
16 if(NOT OpenCV_SOURCE_DIR)
17 message(FATAL_ERROR "OpenCV_SOURCE_DIR must be set to build the plugin!")
20 if(NOT DEFINED CMAKE_BUILD_TYPE)
21 set(CMAKE_BUILD_TYPE "Release")
23 message(STATUS "CMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}")
25 set(BUILD_SHARED_LIBS ON CACHE BOOL "")
26 if(NOT BUILD_SHARED_LIBS)
27 message(FATAL_ERROR "Static plugin build does not make sense")
30 # re-use OpenCV build scripts
31 include("${OpenCV_SOURCE_DIR}/cmake/OpenCVUtils.cmake")
32 include("${OpenCV_SOURCE_DIR}/cmake/OpenCVDetectCXXCompiler.cmake")
33 include("${OpenCV_SOURCE_DIR}/cmake/OpenCVCompilerOptions.cmake")
35 function(ocv_create_plugin module default_name dependency_target dependency_target_desc)
37 set(OPENCV_PLUGIN_NAME ${default_name} CACHE STRING "")
38 set(OPENCV_PLUGIN_DESTINATION "" CACHE PATH "")
39 project(${OPENCV_PLUGIN_NAME} LANGUAGES CXX)
41 if(NOT TARGET ${dependency_target})
42 message(FATAL_ERROR "${dependency_target_desc} was not found! (missing target ${dependency_target})")
45 set(modules_ROOT "${OpenCV_SOURCE_DIR}/modules")
46 set(module_ROOT "${modules_ROOT}/${module}")
49 list(APPEND sources "${module_ROOT}/${src}")
52 add_library(${OPENCV_PLUGIN_NAME} MODULE
54 ${OPENCV_PLUGIN_EXTRA_SRC_FILES}
57 if(OPENCV_PLUGIN_DEPS)
58 foreach(d ${OPENCV_PLUGIN_DEPS})
59 list(APPEND OPENCV_PLUGIN_EXTRA_INCLUDES "${modules_ROOT}/${d}/include")
63 target_include_directories(${OPENCV_PLUGIN_NAME} PRIVATE
64 "${CMAKE_CURRENT_BINARY_DIR}"
66 "${module_ROOT}/include"
67 ${OPENCV_PLUGIN_EXTRA_INCLUDES}
69 target_compile_definitions(${OPENCV_PLUGIN_NAME} PRIVATE "BUILD_PLUGIN=1")
71 target_link_libraries(${OPENCV_PLUGIN_NAME} PRIVATE ${dependency_target})
72 set_target_properties(${OPENCV_PLUGIN_NAME} PROPERTIES
74 CXX_VISIBILITY_PRESET hidden
77 if(DEFINED OPENCV_PLUGIN_MODULE_PREFIX)
78 set_target_properties(${OPENCV_PLUGIN_NAME} PROPERTIES PREFIX "${OPENCV_PLUGIN_MODULE_PREFIX}")
81 if(WIN32 OR NOT APPLE)
82 set(OPENCV_PLUGIN_NO_LINK FALSE CACHE BOOL "")
84 set(OPENCV_PLUGIN_NO_LINK TRUE CACHE BOOL "")
87 if(OPENCV_PLUGIN_NO_LINK)
89 set_target_properties(${OPENCV_PLUGIN_NAME} PROPERTIES LINK_FLAGS "-undefined dynamic_lookup")
92 find_package(OpenCV REQUIRED ${module} ${OPENCV_PLUGIN_DEPS})
93 target_link_libraries(${OPENCV_PLUGIN_NAME} PRIVATE ${OpenCV_LIBRARIES})
96 if(NOT OpenCV_FOUND) # build against sources (Linux)
97 file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/opencv2/opencv_modules.hpp" "#pragma once")
101 ocv_update(OPENCV_DEBUG_POSTFIX d)
103 set_target_properties(${OPENCV_PLUGIN_NAME} PROPERTIES DEBUG_POSTFIX "${OPENCV_DEBUG_POSTFIX}")
105 if(DEFINED OPENCV_PLUGIN_SUFFIX)
109 ocv_update(OPENCV_PLUGIN_VERSION "${OpenCV_VERSION_MAJOR}${OpenCV_VERSION_MINOR}${OpenCV_VERSION_PATCH}")
110 if(CMAKE_CXX_SIZEOF_DATA_PTR EQUAL 8)
111 ocv_update(OPENCV_PLUGIN_ARCH "_64")
113 ocv_update(OPENCV_PLUGIN_ARCH "")
118 ocv_update(OPENCV_PLUGIN_SUFFIX "${OPENCV_PLUGIN_VERSION}${OPENCV_PLUGIN_ARCH}")
121 if(OPENCV_PLUGIN_DESTINATION)
122 set_target_properties(${OPENCV_PLUGIN_NAME} PROPERTIES LIBRARY_OUTPUT_DIRECTORY "${OPENCV_PLUGIN_DESTINATION}")
123 message(STATUS "Output destination: ${OPENCV_PLUGIN_DESTINATION}")
126 if(OPENCV_PLUGIN_OUTPUT_NAME_FULL)
127 set_target_properties(${OPENCV_PLUGIN_NAME} PROPERTIES OUTPUT_NAME "${OPENCV_PLUGIN_OUTPUT_NAME_FULL}")
128 elseif(OPENCV_PLUGIN_OUTPUT_NAME)
129 set_target_properties(${OPENCV_PLUGIN_NAME} PROPERTIES OUTPUT_NAME "${OPENCV_PLUGIN_OUTPUT_NAME}${OPENCV_PLUGIN_SUFFIX}")
131 set_target_properties(${OPENCV_PLUGIN_NAME} PROPERTIES OUTPUT_NAME "${OPENCV_PLUGIN_NAME}${OPENCV_PLUGIN_SUFFIX}")
134 install(TARGETS ${OPENCV_PLUGIN_NAME} LIBRARY DESTINATION . COMPONENT plugins)
136 message(STATUS "Library name: ${OPENCV_PLUGIN_NAME}")