尝试构建memcached 1.6，但失败并出现以下错误。 如何解决问题？
libtool：compile：gcc -std = gnu99 -DHAVE_CONFIG_H -I。 -I./include -I./libevent -I./engines/default_engine -I./include -I./libevent -fvisibility = hidden -pthread -g -O2 -Wall -Werror -pedantic -Wmissing-prototypes -Wmissing-声明-Wredundant-decls -MT default_engine_la-assoc.lo -MD -MP -MF .deps / default_engine_la-assoc.Tpo -c engines / default_engine / assoc.c -fPIC -DPIC -o .libs / default_engine_la-assoc.o
mv -f .deps / default_engine_la-assoc.Tpo .deps / default_engine_la-assoc.Plo
/ bin / sh ./libtool --tag = CC --mode = compile gcc -std = gnu99 -DHAVE_CONFIG_H -I。 -I./include -I./libevent -I./engines/default_engine -I./include -I./libevent -fvisibility = hidden -pthread -g -O2 -Wall -Werror -pedantic -Wmissing-prototypes -Wmissing-声明-Wredundant-decls -MT default_engine_la-default_engine.lo -MD -MP -MF .deps / default_engine_la-default_engine.Tpo -c -o default_engine_la-default_engine.lo test -f 'engines/default_engine/default_engine.c' || echo './' engines / default_engine / default_engine.c
libtool：compile：gcc -std = gnu99 -DHAVE_CONFIG_H -I。 -I./include -I./libevent -I./engines/default_engine -I./include -I./libevent -fvisibility = hidden -pthread -g -O2 -Wall -Werror -pedantic -Wmissing-prototypes -Wmissing-声明-Wredundant-decls -MT default_engine_la-default_engine.lo -MD -MP -MF .deps / default_engine_la-default_engine.Tpo -c engines / default_engine / default_engine.c -fPIC -DPIC -o .libs / default_engine_la-default_engine.o < / p>
engines / default_engine / default_engine.c：在函数âinitalize_configuration中： engines / default_engine / default_engine.c：506：22：错误：变量âretâset但未使用[-Werror = unused-but-set-variable]
cc1：所有警告都被视为错误 make [1]： * [default_engine_la-default_engine.lo]错误1 make [1]：离开目录`/home/user123/Downloads/memcached-1.6.0_beta1' make：* [all]错误2