MegEngine/cmake/zmq.cmake

include(ExternalProject)
include(GNUInstallDirs)

set(ZMQ_DIR ${PROJECT_SOURCE_DIR}/third_party/libzmq CACHE STRING "ZMQ directory")
set(ZMQ_BUILD_DIR ${PROJECT_BINARY_DIR}/third_party/libzmq)
set(ZMQ_LIB ${ZMQ_BUILD_DIR}/${CMAKE_INSTALL_LIBDIR}/libzmq.a)

ExternalProject_add(
    zmq
    SOURCE_DIR ${ZMQ_DIR}
    PREFIX ${ZMQ_BUILD_DIR}
    CMAKE_ARGS -DCMAKE_C_COMPILER_LAUNCHER=${CMAKE_C_COMPILER_LAUNCHER} -DCMAKE_CXX_COMPILER_LAUNCHER=${CMAKE_CXX_COMPILER_LAUNCHER} -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE} -DCMAKE_TOOLCHAIN_FILE=${CMAKE_TOOLCHAIN_FILE} -DCMAKE_INSTALL_PREFIX=${ZMQ_BUILD_DIR} -DWITH_PERF_TOOL=OFF -DZMQ_BUILD_TESTS=OFF -DENABLE_CPACK=OFF -DENABLE_CURVE=OFF
    BUILD_BYPRODUCTS ${ZMQ_LIB}
)

set(ZMQ_INC ${ZMQ_BUILD_DIR}/include)
file(MAKE_DIRECTORY ${ZMQ_INC})

add_library(libzmq STATIC IMPORTED GLOBAL)
add_dependencies(libzmq zmq)
set_target_properties(
    libzmq PROPERTIES
    IMPORTED_LOCATION ${ZMQ_LIB}
    INTERFACE_INCLUDE_DIRECTORIES ${ZMQ_INC}
)