if(PROJECT_ENABLE_CURL)
  if(PROJECT_BUILD)
    find_package(CURL ${CURL_VERSION} REQUIRED)

    add_definitions(-DPROJECT_ENABLE_CURL)

    include_directories(BEFORE SYSTEM
      ${CURL_INCLUDE_DIRS}
    )

    link_libraries(
      CURL::libcurl
    )

    if (EXISTS ${PROJECT_DIST_DIR}/cacert.pem)
      file(REMOVE ${PROJECT_DIST_DIR}/cacert.pem)
    endif()
    file(DOWNLOAD https://curl.haxx.se/ca/cacert.pem ${PROJECT_DIST_DIR}/cacert.pem)
  elseif(NOT PROJECT_IS_MINGW OR CMAKE_HOST_WIN32)
    ExternalProject_Add(curl_project
      PREFIX external
      URL ${PROJECT_3RD_PARTY_DIR}/curl-${CURL_VERSION}.tar.gz
      URL_HASH SHA256=f91249c87f68ea00cf27c44fdfa5a78423e41e71b7d408e5901a9896d905c495
      LIST_SEPARATOR |
      CMAKE_ARGS 
        ${PROJECT_EXTERNAL_CMAKE_FLAGS}
        -DBUILD_SHARED_LIBS=${PROJECT_BUILD_SHARED_LIBS}
        -DBUILD_STATIC_LIBS=ON
        -DBUILD_CURL_EXE=OFF
        -DBUILD_STATIC_CURL=ON
        -DBUILD_STATIC_LIBS=ON
        -DBUILD_TESTING=OFF
        -DCURL_CA_BUNDLE=./cacert.pem
        -DCURL_CA_FALLBACK=ON
        -DCURL_DISABLE_LDAP=ON
        -DCURL_USE_LIBPSL=OFF
        -DCURL_USE_LIBSSH2=OFF
        -DCURL_USE_OPENSSL=${PROJECT_ENABLE_OPENSSL}
        -DCURL_ZLIB=ON
        -DENABLE_THREADED_RESOLVER=ON
        -DOPENSSL_ROOT_DIR=${OPENSSL_ROOT_DIR}
        -DOPENSSL_USE_STATIC_LIBS=${OPENSSL_USE_STATIC_LIBS}
        -DUSE_LIBIDN2=OFF
        -DZLIB_USE_STATIC_LIBS=${ZLIB_USE_STATIC_LIBS}
    )

    set(PROJECT_DEPENDENCIES
      ${PROJECT_DEPENDENCIES}
      curl_project
    )

    if(PROJECT_ENABLE_OPENSSL)
      add_dependencies(curl_project openssl_project)
    endif()
  endif()
endif()