collect2: error: ld returned 1 exit status

[ghost]

I am trying to compile manually but get the following error while trying make -j9
Logs:

/usr/bin/ld: objs/loop.o:/home/david/tg/loop.c:77: multiple definition of `verbosity'; objs/main.o:/home/david/tg/main.c:93: first defined here
/usr/bin/ld: objs/loop.o:/home/david/tg/loop.c:392: multiple definition of `wait_dialog_list'; objs/main.o:/home/david/tg/main.c:522: first defined here
/usr/bin/ld: objs/loop.o:/home/david/tg/loop.c:90: multiple definition of `register_mode'; objs/main.o:/home/david/tg/main.c:520: first defined here
/usr/bin/ld: objs/interface.o:/home/david/tg/interface.c:122: multiple definition of `msg_num_mode'; objs/main.o:/home/david/tg/main.c:94: first defined here
/usr/bin/ld: objs/interface.o:/home/david/tg/interface.c:135: multiple definition of `readline_active'; objs/loop.o:/home/david/tg/loop.c:390: first defined here
/usr/bin/ld: objs/interface.o:/home/david/tg/interface.c:125: multiple definition of `disable_colors'; objs/main.o:/home/david/tg/main.c:111: first defined here
/usr/bin/ld: objs/interface.o:/home/david/tg/interface.c:124: multiple definition of `permanent_peer_id_mode'; objs/main.o:/home/david/tg/main.c:125: first defined here
/usr/bin/ld: objs/interface.o:/home/david/tg/interface.c:121: multiple definition of `disable_auto_accept'; objs/main.o:/home/david/tg/main.c:521: first defined here
/usr/bin/ld: objs/interface.o:/home/david/tg/interface.c:123: multiple definition of `permanent_msg_id_mode'; objs/main.o:/home/david/tg/main.c:124: first defined here
collect2: error: ld returned 1 exit status
make: *** [Makefile:60: bin/telegram-cli] Error 1

[luroc]

changing line 77 in loop.c from int verbosity to extern int verbosity and line 122 in interface.c from int msg_num_mode to extern int msg_num_mode seems to solve this for me. (as seen in this forum thread )

Take with a grain of salt, as I really don't have a clue about C.