如何升级libcoap?

[zsd0101]

我在使用 esp-idf-v4.2.1.我需要升级 libcoap 到4-3-0版本, 所以把这个版本文件替换掉 esp-idf-v4.2.1\components\coap。还修改了 compenent.mk 和 CMakeLists.txt 中相关的内容（coap2修改为coap3）:
compenent.mk

Code: Select all

#
# Component Makefile
#

COMPONENT_ADD_INCLUDEDIRS := port/include port/include/coap libcoap/include libcoap/include/coap3

CMakeLists.txt

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set(include_dirs port/include port/include/coap libcoap/include libcoap/include/coap3)

set(srcs 
    "libcoap/src/address.c"
    "libcoap/src/async.c"
    "libcoap/src/block.c"
    "libcoap/src/coap_event.c"
    "libcoap/src/coap_hashkey.c"
    "libcoap/src/coap_session.c"
    "libcoap/src/coap_time.c"
    "port/coap_debug.c"
    "libcoap/src/encode.c"
    "libcoap/src/mem.c"
    "libcoap/src/net.c"
    "libcoap/src/option.c"
    "libcoap/src/pdu.c"
    "libcoap/src/resource.c"
    "libcoap/src/str.c"
    "libcoap/src/subscribe.c"
    "libcoap/src/uri.c"
    "libcoap/src/coap_io.c"
    "port/coap_notls.c"
    "port/coap_mbedtls.c")

idf_component_register(SRCS "${srcs}"
                    INCLUDE_DIRS "${include_dirs}"
                    REQUIRES lwip mbedtls)

# Silence format truncation warning, until it is fixed upstream
set_source_files_properties(port/coap_debug.c PROPERTIES COMPILE_FLAGS -Wno-format-truncation)

# Needed for coap headers in public builds, also.
#
# TODO: find a way to move this to a port header
target_compile_definitions(${COMPONENT_LIB} PUBLIC WITH_POSIX)

编译时遇到如下报错:
libcoap/include/coap3/coap_dtls.h:118:14: error: unknown type name'coap_session_t';

我检查了 "coap_dtls.h"的内容, 发现其中、以及其包含的头文件里都没有 "coap_session_t"这个结构体的定义。请问这个coap库应该怎么编译啊？