webdis compile error

[SSPkrolik]

I've got a large error output:

cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o webdis.o webdis.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o cmd.o cmd.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o worker.o worker.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o slog.o slog.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o server.o server.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o libb64/cencode.o libb64/cencode.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o acl.o acl.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o md5/md5.o md5/md5.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o http.o http.c http.c: In function ‘http_response_write’: http.c:138:9: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable] cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o client.o client.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o websocket.o websocket.c websocket.c: In function ‘ws_handshake_reply’: websocket.c:76:6: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable] cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o pool.o pool.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o conf.o conf.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o formats/json.o formats/json.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o formats/raw.o formats/raw.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o formats/common.o formats/common.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o formats/custom-type.o formats/custom-type.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o formats/bson.o formats/bson.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o hiredis/hiredis.o hiredis/hiredis.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o hiredis/sds.o hiredis/sds.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o hiredis/net.o hiredis/net.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o hiredis/async.o hiredis/async.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o hiredis/dict.o hiredis/dict.c hiredis/dict.c:53:21: warning: ‘dictGenHashFunction’ defined but not used [-Wunused-function] hiredis/dict.c:73:14: warning: ‘dictCreate’ defined but not used [-Wunused-function] hiredis/dict.c:160:12: warning: ‘dictReplace’ defined but not used [-Wunused-function] hiredis/dict.c:182:12: warning: ‘dictDelete’ defined but not used [-Wunused-function] hiredis/dict.c:238:13: warning: ‘dictRelease’ defined but not used [-Wunused-function] hiredis/dict.c:258:22: warning: ‘dictGetIterator’ defined but not used [-Wunused-function] hiredis/dict.c:268:19: warning: ‘dictNext’ defined but not used [-Wunused-function] hiredis/dict.c:288:13: warning: ‘dictReleaseIterator’ defined but not used [-Wunused-function] cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o jansson/src/dump.o jansson/src/dump.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o jansson/src/error.o jansson/src/error.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o jansson/src/hashtable.o jansson/src/hashtable.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o jansson/src/load.o jansson/src/load.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o jansson/src/strbuffer.o jansson/src/strbuffer.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o jansson/src/utf.o jansson/src/utf.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o jansson/src/value.o jansson/src/value.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o jansson/src/variadic.o jansson/src/variadic.c cc -c -O3 -Wall -Wextra -I. -Ijansson/src -Ihttp-parser -o http-parser/http_parser.o http-parser/http_parser.c cc -levent -pthread -o webdis webdis.o cmd.o worker.o slog.o server.o libb64/cencode.o acl.o md5/md5.o http.o client.o websocket.o pool.o conf.o formats/json.o formats/raw.o formats/common.o formats/custom-type.o formats/bson.o hiredis/hiredis.o hiredis/sds.o hiredis/net.o hiredis/async.o hiredis/dict.o jansson/src/dump.o jansson/src/error.o jansson/src/hashtable.o jansson/src/load.o jansson/src/strbuffer.o jansson/src/utf.o jansson/src/value.o jansson/src/variadic.o http-parser/http_parser.o worker.o: In function worker_main': worker.c:(.text+0xd): undefined reference toevent_base_new' worker.c:(.text+0x29): undefined reference to event_set' worker.c:(.text+0x35): undefined reference toevent_base_set' worker.c:(.text+0x3f): undefined reference to event_add' worker.c:(.text+0x6b): undefined reference toevent_base_dispatch' worker.o: In function worker_can_read': worker.c:(.text+0xd2): undefined reference toevent_set' worker.c:(.text+0xe5): undefined reference to event_base_set' worker.o: In functionworker_on_new_client': worker.c:(.text+0x1f5): undefined reference to event_set' worker.c:(.text+0x208): undefined reference toevent_base_set' worker.c:(.text+0x212): undefined reference to event_add' worker.o: In functionworker_monitor_input': worker.c:(.text+0x2b8): undefined reference to event_set' worker.c:(.text+0x2cb): undefined reference toevent_base_set' worker.o: In function worker_can_read': worker.c:(.text+0xf5): undefined reference toevent_add' worker.o: In function worker_monitor_input': worker.c:(.text+0x2e3): undefined reference toevent_add' server.o: In function server_start': server.c:(.text+0x217): undefined reference toevent_reinit' server.c:(.text+0x338): undefined reference to event_base_new' server.c:(.text+0x35a): undefined reference toevent_set' server.c:(.text+0x369): undefined reference to event_base_set' server.c:(.text+0x373): undefined reference toevent_add' server.c:(.text+0x37f): undefined reference to event_base_dispatch' http.o: In functionhttp_can_write': http.c:(.text+0x63): undefined reference to event_set' http.c:(.text+0x76): undefined reference toevent_base_set' http.o: In function http_schedule_write': http.c:(.text+0x3f1): undefined reference toevent_set' http.c:(.text+0x404): undefined reference to event_base_set' http.o: In functionhttp_response_write': http.c:(.text+0x6b1): undefined reference to event_set' http.c:(.text+0x6c4): undefined reference toevent_base_set' http.c:(.text+0x6ce): undefined reference to event_add' http.o: In functionhttp_response_write_chunk': http.c:(.text+0xc36): undefined reference to event_set' http.c:(.text+0xc49): undefined reference toevent_base_set' http.c:(.text+0xc53): undefined reference to event_add' http.o: In functionhttp_can_write': http.c:(.text+0x84): undefined reference to event_add' http.o: In functionhttp_schedule_write': http.c:(.text+0x40f): undefined reference to event_add' pool.o: In functionredisLibeventCleanup': pool.c:(.text+0x89): undefined reference to event_del' pool.c:(.text+0x95): undefined reference toevent_del' pool.o: In function pool_on_disconnect': pool.c:(.text+0x179): undefined reference toevent_set' pool.c:(.text+0x189): undefined reference to event_base_set' pool.o: In functionredisLibeventAttach': pool.c:(.text+0x266): undefined reference to event_set' pool.c:(.text+0x281): undefined reference toevent_set' pool.c:(.text+0x28c): undefined reference to event_base_set' pool.c:(.text+0x297): undefined reference toevent_base_set' pool.o: In function pool_can_connect': pool.c:(.text+0x3dd): undefined reference toevent_set' pool.c:(.text+0x3ed): undefined reference to event_base_set' pool.o: In functionpool_connect': pool.c:(.text+0x595): undefined reference to event_set' pool.c:(.text+0x5a5): undefined reference toevent_base_set' pool.c:(.text+0x5b6): undefined reference to event_add' pool.o: In functionredisLibeventAddWrite': pool.c:(.text+0x6a): undefined reference to event_add' pool.o: In functionredisLibeventAddRead': pool.c:(.text+0x77): undefined reference to event_add' pool.o: In functionredisLibeventDelWrite': pool.c:(.text+0xb8): undefined reference to event_del' pool.o: In functionredisLibeventDelRead': pool.c:(.text+0xc5): undefined reference to event_del' pool.o: In functionpool_on_disconnect': pool.c:(.text+0x19e): undefined reference to event_add' pool.o: In functionpool_can_connect': pool.c:(.text+0x402): undefined reference to `event_add' collect2: ld returned 1 exit status

make: *\ [webdis] Помилка 1

Seams like linker cannot find reference to libevent but I'm sure it's installed on my Ubuntu x86_64 (via Synaptic) - the library and dev-header. So I'm confused what else might it be. I think some errors may be caused because I've got not proper version of libevent installed. I use

• libevent-2.0.12.
• libevent-dev-2.0.12

I've got also

• libevent-1.4 installed on my system. Would be appreciate for the fast reply. Thank you.

[nicolasff]

You're right that it can't find libevent.so. If you don't have libevent.so in /usr/lib, try to add -L/path/to/the/libevent/directory to $LDFLAGS in the Makefile. There is no space between the L and the path.

[SSPkrolik]

Well, that's actually where's the problem hiding. I've got libevent.so:

krolik@krolik-PC:~$ locate libevent.so /usr/lib/libevent.so krolik@krolik-PC:~$

As I wrote before, mb the problem is caused by wrong version. Here's what I have in my /usr/lib directory:

krolik@krolik-PC:~$ locate /usr/lib/libevent /usr/lib/libevent-1.4.so.2 /usr/lib/libevent-1.4.so.2.1.3 /usr/lib/libevent-2.0.so.5 /usr/lib/libevent-2.0.so.5.1.1 /usr/lib/libevent.a /usr/lib/libevent.so /usr/lib/libevent_core-2.0.so.5 /usr/lib/libevent_core-2.0.so.5.1.1 /usr/lib/libevent_core.a /usr/lib/libevent_core.so /usr/lib/libevent_extra-2.0.so.5 /usr/lib/libevent_extra-2.0.so.5.1.1 /usr/lib/libevent_extra.a /usr/lib/libevent_extra.so /usr/lib/libevent_openssl-2.0.so.5 /usr/lib/libevent_openssl-2.0.so.5.1.1 /usr/lib/libevent_openssl.a /usr/lib/libevent_openssl.so /usr/lib/libevent_pthreads-2.0.so.5 /usr/lib/libevent_pthreads-2.0.so.5.1.1 /usr/lib/libevent_pthreads.a /usr/lib/libevent_pthreads.so krolik@krolik-PC:~$

[nicolasff]

Can you check that libevent.so is not a broken symlink?

[nicolasff]

Wait. locate is using a local database, that might not be up-to-date. Please use ls and not locate.

[SSPkrolik]

Yeah. I understand. I've checked this before. It's really there. Please look below on ls results:

krolik@krolik-PC:/usr/lib$ ls | grep libevent libevent-1.4.so.2 libevent-1.4.so.2.1.3 libevent-2.0.so.5 libevent-2.0.so.5.1.1 libevent.a libevent_core-2.0.so.5 libevent_core-2.0.so.5.1.1 libevent_core.a libevent_core.so libevent_extra-2.0.so.5 libevent_extra-2.0.so.5.1.1 libevent_extra.a libevent_extra.so libevent_openssl-2.0.so.5 libevent_openssl-2.0.so.5.1.1 libevent_openssl.a libevent_openssl.so libevent_pthreads-2.0.so.5 libevent_pthreads-2.0.so.5.1.1 libevent_pthreads.a libevent_pthreads.so libevent.so krolik@krolik-PC:/usr/lib$

[SSPkrolik]

Some additional info:

• Linux kernel v. 3.0.0.7
• gcc v. 4.6

I hope this will help you to locate the problem.

[nicolasff]

Please try ldd /usr/lib/libevent.so. Also, what does libevent.so point to?

[SSPkrolik]

Here it is:

krolik@krolik-PC:/usr/lib$ ldd libevent.so linux-vdso.so.1 => (0x00007fff1f1ff000) librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f22f77a1000) libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f22f7583000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f22f71dc000) /lib64/ld-linux-x86-64.so.2 (0x00007f22f7c12000)

[nicolasff]

Try changing -levent in the Makefile to -levent2. If that doesn't work, ask on stackoverflow.com, there might be someone who can help you set it up.

[SSPkrolik]

Well, I actually tried that, I mean '-levent2' in the very beginning, and got this error:

/usr/bin/ld: cannot find -levent2

Well, thank's a lot for your patience and time, and I'll follow your advice and try stackoverflow.

[SSPkrolik]

Hi, nicolasff. I've managed to solve the problem with help of a guy from stackoverflow. The reason it didn't link was in the order of parameters sent to linker. I put -levent into the end of the command line parameters and it worked. Here's a short diff, I think that all diff would be excessive:

10: LDFLAGS=-pthread 23: $(CC) $(LDFLAGS) -o $(OUT) $(OBJS) -levent

Thanks a lot again, now try to use the product! ;)

[SSPkrolik]

Diving into gcc manual said me that the order really matters for static linking.

[nicolasff]

Right, there is no static link here though.