嘗試編譯webdis時出錯

Question

我要使用webdis，但在連接階段出現錯誤。 Webdis是redis數據庫的Web面。你可以在這裏找到它：http://webd.is。

我的系統配置是：

* Ubuntu Oneiric Ocelot (11.10 Alpha) 
* Gcc 4.6 
* Linux kernel 3.0.0-7 

當我讓我得到一個輸出：

krolik@krolik-PC:~/Projects/webdis$ make 
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 to `event_base_new' 
worker.c:(.text+0x29): undefined reference to `event_set' 
worker.c:(.text+0x35): undefined reference to `event_base_set' 
worker.c:(.text+0x3f): undefined reference to `event_add' 
worker.c:(.text+0x6b): undefined reference to `event_base_dispatch' 
worker.o: In function `worker_can_read': 
worker.c:(.text+0xd2): undefined reference to `event_set' 
worker.c:(.text+0xe5): undefined reference to `event_base_set' 
worker.o: In function `worker_on_new_client': 
worker.c:(.text+0x1f5): undefined reference to `event_set' 
worker.c:(.text+0x208): undefined reference to `event_base_set' 
worker.c:(.text+0x212): undefined reference to `event_add' 
worker.o: In function `worker_monitor_input': 
worker.c:(.text+0x2b8): undefined reference to `event_set' 
worker.c:(.text+0x2cb): undefined reference to `event_base_set' 
worker.o: In function `worker_can_read': 
worker.c:(.text+0xf5): undefined reference to `event_add' 
worker.o: In function `worker_monitor_input': 
worker.c:(.text+0x2e3): undefined reference to `event_add' 
server.o: In function `server_start': 
server.c:(.text+0x217): undefined reference to `event_reinit' 
server.c:(.text+0x338): undefined reference to `event_base_new' 
server.c:(.text+0x35a): undefined reference to `event_set' 
server.c:(.text+0x369): undefined reference to `event_base_set' 
server.c:(.text+0x373): undefined reference to `event_add' 
server.c:(.text+0x37f): undefined reference to `event_base_dispatch' 
http.o: In function `http_can_write': 
http.c:(.text+0x63): undefined reference to `event_set' 
http.c:(.text+0x76): undefined reference to `event_base_set' 
http.o: In function `http_schedule_write': 
http.c:(.text+0x3f1): undefined reference to `event_set' 
http.c:(.text+0x404): undefined reference to `event_base_set' 
http.o: In function `http_response_write': 
http.c:(.text+0x6b1): undefined reference to `event_set' 
http.c:(.text+0x6c4): undefined reference to `event_base_set' 
http.c:(.text+0x6ce): undefined reference to `event_add' 
http.o: In function `http_response_write_chunk': 
http.c:(.text+0xc36): undefined reference to `event_set' 
http.c:(.text+0xc49): undefined reference to `event_base_set' 
http.c:(.text+0xc53): undefined reference to `event_add' 
http.o: In function `http_can_write': 
http.c:(.text+0x84): undefined reference to `event_add' 
http.o: In function `http_schedule_write': 
http.c:(.text+0x40f): undefined reference to `event_add' 
pool.o: In function `redisLibeventCleanup': 
pool.c:(.text+0x89): undefined reference to `event_del' 
pool.c:(.text+0x95): undefined reference to `event_del' 
pool.o: In function `pool_on_disconnect': 
pool.c:(.text+0x179): undefined reference to `event_set' 
pool.c:(.text+0x189): undefined reference to `event_base_set' 
pool.o: In function `redisLibeventAttach': 
pool.c:(.text+0x266): undefined reference to `event_set' 
pool.c:(.text+0x281): undefined reference to `event_set' 
pool.c:(.text+0x28c): undefined reference to `event_base_set' 
pool.c:(.text+0x297): undefined reference to `event_base_set' 
pool.o: In function `pool_can_connect': 
pool.c:(.text+0x3dd): undefined reference to `event_set' 
pool.c:(.text+0x3ed): undefined reference to `event_base_set' 
pool.o: In function `pool_connect': 
pool.c:(.text+0x595): undefined reference to `event_set' 
pool.c:(.text+0x5a5): undefined reference to `event_base_set' 
pool.c:(.text+0x5b6): undefined reference to `event_add' 
pool.o: In function `redisLibeventAddWrite': 
pool.c:(.text+0x6a): undefined reference to `event_add' 
pool.o: In function `redisLibeventAddRead': 
pool.c:(.text+0x77): undefined reference to `event_add' 
pool.o: In function `redisLibeventDelWrite': 
pool.c:(.text+0xb8): undefined reference to `event_del' 
pool.o: In function `redisLibeventDelRead': 
pool.c:(.text+0xc5): undefined reference to `event_del' 
pool.o: In function `pool_on_disconnect': 
pool.c:(.text+0x19e): undefined reference to `event_add' 
pool.o: In function `pool_can_connect': 
pool.c:(.text+0x402): undefined reference to `event_add' 
collect2: ld returned 1 exit status 
make: *** [webdis] Помилка 1 

我已經libevent.so和的libevent-dev的頭安裝在我的/ usr/lib目錄目錄，我也嘗試了-LEvent2而不是在Makefile的LDFLAGS變量中使用-levent，但仍然沒有取得任何進展。什麼可以解決我的問題？

謝謝。

Answer 1

您需要在鏈接器命令行中輸入-levent命令行選項之後目標文件的名稱。從GDC文檔-l標誌：

-llibrary 
-l library 
    Search the library named library when linking. (The second 
    alternative with the library as a separate argument is only for 
    POSIX compliance and is not recommended.) 

    It makes a difference where in the command you write this option; 
    the linker searches and processes libraries and object files in the 
    order they are specified. Thus, foo.o -lz bar.o searches library z 
    after file foo.o but before bar.o. If bar.o refers to functions in 
    z, those functions may not be loaded.