构建 Mosquitto MQTT 身份验证插件问题

Question

我需要 Mosquitto 的高级授权。我决定使用 mosquitto-auth-plug

但是，如果我按照 build instructions 我有错误：

$ make
Selected backends:          JWT
Using mosquitto source dir: /mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15
OpenSSL install dir:

If you changed the backend selection, you might need to 'make clean' first

CFLAGS:   -I/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/src/ -I/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/lib/ -fPIC -Wall -Werror  -DBE_JWT  -I/src -DDEBUG=1 -I/include
LDFLAGS:   -L/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/lib/
LDADD:    -lcurl -L/lib -lcrypto -lmosquitto

cc  -I/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/src/ -I/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/lib/ -fPIC -Wall -Werror  -DBE_JWT  -I/src -DDEBUG=1 -I/include   -c -o auth-plug.o auth-plug.c
cc  -I/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/src/ -I/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/lib/ -fPIC -Wall -Werror  -DBE_JWT  -I/src -DDEBUG=1 -I/include   -c -o base64.o base64.c
cc  -I/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/src/ -I/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/lib/ -fPIC -Wall -Werror  -DBE_JWT  -I/src -DDEBUG=1 -I/include   -c -o pbkdf2-check.o pbkdf2-check.c
cc  -I/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/src/ -I/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/lib/ -fPIC -Wall -Werror  -DBE_JWT  -I/src -DDEBUG=1 -I/include   -c -o log.o log.c
cc  -I/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/src/ -I/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/lib/ -fPIC -Wall -Werror  -DBE_JWT  -I/src -DDEBUG=1 -I/include   -c -o envs.o envs.c
cc  -I/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/src/ -I/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/lib/ -fPIC -Wall -Werror  -DBE_JWT  -I/src -DDEBUG=1 -I/include   -c -o hash.o hash.c
cc  -I/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/src/ -I/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/lib/ -fPIC -Wall -Werror  -DBE_JWT  -I/src -DDEBUG=1 -I/include   -c -o be-psk.o be-psk.c
cc  -I/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/src/ -I/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/lib/ -fPIC -Wall -Werror  -DBE_JWT  -I/src -DDEBUG=1 -I/include   -c -o backends.o backends.c
cc  -I/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/src/ -I/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/lib/ -fPIC -Wall -Werror  -DBE_JWT  -I/src -DDEBUG=1 -I/include   -c -o cache.o cache.c
cc  -I/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/src/ -I/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/lib/ -fPIC -Wall -Werror  -DBE_JWT  -I/src -DDEBUG=1 -I/include   -c -o be-jwt.o be-jwt.c
cc  -I/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/src/ -I/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/lib/ -fPIC -Wall -Werror  -DBE_JWT  -I/src -DDEBUG=1 -I/include   -L/mnt/c/Users/avkar/cleversky/mosquitto/mosquitto-1.4.15/lib/ -fPIC -shared -o auth-plug.so auth-plug.o base64.o pbkdf2-check.o log.o envs.o hash.o be-psk.o backends.o cache.o be-jwt.o   -lcurl -L/lib -lcrypto -lmosquitto
/usr/bin/ld: cannot find -lmosquitto
collect2: error: ld returned 1 exit status
Makefile:160: recipe for target 'auth-plug.so' failed
make: *** [auth-plug.so] Error 1

有些 -lmosquitto 未找到。我假设这是一个图书馆，但所有的图书馆都存在：

$ ls ../mosquitto-1.4.15/lib/
CMakeLists.txt  logging_mosq.c  memory_mosq.h    mosquitto.h           net_mosq.h            read_handle_shared.c  socks_mosq.c   time_mosq.c  util_mosq.c
cpp             logging_mosq.h  messages_mosq.c  mosquitto_internal.h  read_handle.c         send_client_mosq.c    socks_mosq.h   time_mosq.h  util_mosq.h
dummypthread.h  Makefile        messages_mosq.h  mqtt3_protocol.h      read_handle_client.c  send_mosq.c           srv_mosq.c     tls_mosq.c   will_mosq.c
linker.version  memory_mosq.c   mosquitto.c      net_mosq.c            read_handle.h         send_mosq.h           thread_mosq.c  tls_mosq.h   will_mosq.h

什么是 -lmosquitto 以及如何修复我的构建？

Answer 1

如评论中所述，

在尝试构建插件之前，您需要构建并安装 mosquitto（或安装预构建版本及其开发包）。

错误是因为ld找不到libmosquitto link反对

构建 Mosquitto MQTT 身份验证插件问题

Building Mosquitto MQTT auth plugin issue

mosquitto

libmosquitto