Re: Unable to compile RDMA-aware examples in C

[Yann Droneaud <ydroneaud-RlY5vtjFyJ3QT0dZR+AlfA@public.gmane.org>]

Hi,

Le lundi 29 septembre 2014 à 02:08 +0000, floaterions a écrit :
> Hello everyone,
> 
> I'm trying to run some basic rdma examples (provided here:
> github.com/tarickb/the-geek-in-the-corner/tree/master/01_basic-client-server
> but I keep getting these errors:
> 
> 
> $ gcc -Wall -g   -lrdmacm -libverbs -lpthread  server.c   -o server
> /tmp/cceNIRgz.o: In function `main':
> /rdma_cma/server.c:58: undefined reference to `rdma_create_event_channel'
> /rdma_cma/server.c:59: undefined reference to `rdma_create_id'
> /rdma_cma/server.c:60: undefined reference to `rdma_bind_addr'
> /rdma_cma/server.c:61: undefined reference to `rdma_listen'
> /rdma_cma/server.c:63: undefined reference to `rdma_get_src_port'
> /rdma_cma/server.c:71: undefined reference to `rdma_ack_cm_event'
> /rdma_cma/server.c:67: undefined reference to `rdma_get_cm_event'
> /rdma_cma/server.c:77: undefined reference to `rdma_destroy_id'
> /rdma_cma/server.c:78: undefined reference to `rdma_destroy_event_channel'
> /tmp/cceNIRgz.o: In function `build_context':
> /rdma_cma/server.c:102: undefined reference to `ibv_alloc_pd'
> /rdma_cma/server.c:103: undefined reference to `ibv_create_comp_channel'
> /rdma_cma/server.c:104: undefined reference to `ibv_create_cq'
> /rdma_cma/server.c:107: undefined reference to `pthread_create'
> /tmp/cceNIRgz.o: In function `poll_cq':
> /rdma_cma/server.c:130: undefined reference to `ibv_get_cq_event'
> /rdma_cma/server.c:131: undefined reference to `ibv_ack_cq_events'
> /tmp/cceNIRgz.o: In function `register_memory':
> /rdma_cma/server.c:163: undefined reference to `ibv_reg_mr'
> /rdma_cma/server.c:169: undefined reference to `ibv_reg_mr'
> /tmp/cceNIRgz.o: In function `on_connect_request':
> /rdma_cma/server.c:202: undefined reference to `rdma_create_qp'
> /rdma_cma/server.c:211: undefined reference to `rdma_accept'
> /tmp/cceNIRgz.o: In function `on_disconnect':
> /rdma_cma/server.c:248: undefined reference to `rdma_destroy_qp'
> /rdma_cma/server.c:250: undefined reference to `ibv_dereg_mr'
> /rdma_cma/server.c:251: undefined reference to `ibv_dereg_mr'
> /rdma_cma/server.c:258: undefined reference to `rdma_destroy_id'
> collect2: error: ld returned 1 exit status
> 

Move the -l<lib> at the end of your command line:
$ gcc -Wall -g server.c   -o server -lrdmacm -libverbs -lpthread

Regards.

-- 
Yann Droneaud
OPTEYA


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