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cmake_minimum_required(VERSION 3.16)
project(ZXing)
option (ZXING_READERS "Build with reader support (decoders)" ON)
set (ZXING_WRITERS "ON" CACHE STRING "Build with old and/or new writer (encoder) backend (OFF/ON/OLD/NEW/BOTH)")
option (ZXING_USE_BUNDLED_ZINT "Use the bundled libzint for barcode creation/writing" ON)
option (ZXING_C_API "Build the C-API" OFF)
option (ZXING_EXPERIMENTAL_API "Build with experimental API" OFF)
option (ZXING_EXAMPLES "Build the example barcode reader/writer applications" ON)
option (ZXING_BLACKBOX_TESTS "Build the black box reader/writer tests" OFF)
option (ZXING_UNIT_TESTS "Build the unit tests (don't enable for production builds)" OFF)
option (ZXING_PYTHON_MODULE "Build the python module" OFF)
set (ZXING_DEPENDENCIES "AUTO" CACHE STRING "Fetch from github or use locally installed (AUTO/GITHUB/LOCAL)")
if (WIN32)
option (BUILD_SHARED_LIBS "Build and link as shared library" OFF)
else()
option (BUILD_SHARED_LIBS "Build and link as shared library" ON)
endif()
if (MSVC)
add_definitions (-DUNICODE -D_UNICODE -D_CRT_SECURE_NO_WARNINGS)
option (ZXING_LINK_CPP_STATICALLY "MSVC only, link standard library statically (/MT and /MTd)" OFF)
if (LINK_CPP_STATICALLY OR ZXING_LINK_CPP_STATICALLY)
set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
endif()
endif()
if (NOT CMAKE_BUILD_TYPE)
set (DEFAULT_BUILD_TYPE "Release")
message (STATUS "Setting build type to '${DEFAULT_BUILD_TYPE}' as none was specified.")
set (CMAKE_BUILD_TYPE "${DEFAULT_BUILD_TYPE}" CACHE STRING "Choose the type of build." FORCE)
set_property (CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release" "MinSizeRel" "RelWithDebInfo")
endif()
# provide backward compatibility for deprecated BUILD_... options
if (DEFINED BUILD_READERS)
set (ZXING_READERS ${BUILD_READERS})
endif()
if (DEFINED BUILD_WRITERS)
set (ZXING_WRITERS ${BUILD_WRITERS})
endif()
if (DEFINED BUILD_EXAMPLES)
message (WARNING "zxing-cpp cmake options BUILD_... are deprecated, please switch to ZXING_... variant")
set (ZXING_EXAMPLES ${BUILD_EXAMPLES})
endif()
if (DEFINED BUILD_PYTHON_MODULE)
message (WARNING "zxing-cpp cmake options BUILD_... are deprecated, please switch to ZXING_... variant")
set (ZXING_PYTHON_MODULE ${BUILD_PYTHON_MODULE})
endif()
if (DEFINED BUILD_DEPENDENCIES)
message (WARNING "zxing-cpp cmake options BUILD_... are deprecated, please switch to ZXING_... variant")
set (ZXING_DEPENDENCIES ${BUILD_DEPENDENCIES})
endif()
if (NOT (ZXING_READERS OR ZXING_WRITERS))
message(FATAL_ERROR "At least one of ZXING_READERS/ZXING_WRITERS must be enabled.")
endif()
set(ZXING_WRITERS_LIST OFF ON OLD NEW BOTH)
set_property(CACHE ZXING_WRITERS PROPERTY STRINGS ${ZXING_WRITERS_LIST})
if(NOT ZXING_WRITERS IN_LIST ZXING_WRITERS_LIST)
message(FATAL_ERROR "ZXING_WRITERS must be one of ${ZXING_WRITERS_LIST}")
endif()
set(ZXING_DEPENDENCIES_LIST AUTO GITHUB LOCAL)
set_property(CACHE ZXING_DEPENDENCIES PROPERTY STRINGS ${ZXING_DEPENDENCIES_LIST})
if(NOT ZXING_DEPENDENCIES IN_LIST ZXING_DEPENDENCIES_LIST)
message(FATAL_ERROR "ZXING_DEPENDENCIES must be one of ${ZXING_DEPENDENCIES_LIST}")
endif()
if (NOT DEFINED CMAKE_CXX_STANDARD)
set (CMAKE_CXX_STANDARD 20)
# Allow the fallback to earlier versions if the compiler does not support it.
set(CMAKE_CXX_STANDARD_REQUIRED OFF)
endif()
if (NOT DEFINED CMAKE_CXX_EXTENSIONS)
set (CMAKE_CXX_EXTENSIONS OFF)
endif()
add_subdirectory (core)
enable_testing()
include(zxing.cmake)
if (ZXING_EXAMPLES)
add_subdirectory (example)
endif()
if (ZXING_BLACKBOX_TESTS)
add_subdirectory (test/blackbox)
endif()
if (ZXING_UNIT_TESTS)
add_subdirectory (test/unit)
endif()
if (ZXING_PYTHON_MODULE)
add_subdirectory (wrappers/python)
endif()
if (ZXING_C_API)
add_subdirectory (wrappers/c)
endif()
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