Build error

[Sonusss]

Trying to build latest version (2.0.18) on armhf platform I get the following error:
I have manually installed cJSON.h cJSON.C in ../cjson, do I miss something ?

cc mosquitto_ctrl.o client.o dynsec.o dynsec_client.o dynsec_group.o dynsec_role.o get_password.o memory_mosq.o memory_public.o misc_mosq.o options.o password_mosq.o ../../lib/libmosquitto.so.1 -o mosquitto_ctrl -lcrypto ../../lib/libmosquitto.so.1 -lcjson -ldl
/usr/bin/ld: cannot find -lcjson
collect2: error: ld returned 1 exit status
make[2]: *** [Makefile:46: mosquitto_ctrl] Error 1
make[2]: Leaving directory '/usr/src/mosquitto-2.0.18/apps/mosquitto_ctrl'
make[1]: *** [Makefile:9: all] Error 2
make[1]: Leaving directory '/usr/src/mosquitto-2.0.18/apps'
make: *** [Makefile:66: mosquitto] Error 2

[Sonusss]

Need to fully install cJSON library instead of just copying the two files cJSON.h and cJSON.c
https://github.com/DaveGamble/cJSON