求助，请大神帮忙。

CentOS8，安装 PHP 的 memcached 扩展，提示需要指定 libmemcached 路径，然后我就 yum install libmemcached，再次安装，还是提示需要指定路径，于是我 rpm -q -l libmemcached，发现有好多，我应该指定哪一个路径？

/usr/bin/memaslap
/usr/bin/memcapable
/usr/bin/memcat
/usr/bin/memcp
/usr/bin/memdump
/usr/bin/memerror
/usr/bin/memexist
/usr/bin/memflush
/usr/bin/memparse
/usr/bin/memping
/usr/bin/memrm
/usr/bin/memslap
/usr/bin/memstat
/usr/bin/memtouch
/usr/lib/.build-id
/usr/lib/.build-id/1b
/usr/lib/.build-id/1b/be22224bfebeca90608feb39b80727ae54628e
/usr/lib/.build-id/38
/usr/lib/.build-id/38/5751e779437bb3a4081e7cfb4ef77088a07d97
/usr/lib/.build-id/42
/usr/lib/.build-id/42/b350284fa158955530a88eb8f96c1f870b4fe2
/usr/lib/.build-id/56
/usr/lib/.build-id/56/42b8e27074c76b9801e7719479084a600db691
/usr/lib/.build-id/59
/usr/lib/.build-id/59/9c9b9482f1c789b5b4446f1b97f5d7e52f30ab
/usr/lib/.build-id/72
/usr/lib/.build-id/72/493b49e4933a11db401650eb5de14a38e22c5b
/usr/lib/.build-id/78
/usr/lib/.build-id/78/c5db64ca4e70a9fd1ef5da96ad28db07946bfa
/usr/lib/.build-id/98
/usr/lib/.build-id/98/6fde24b289939e1bb1621f74c46e68329b140a
/usr/lib/.build-id/a9
/usr/lib/.build-id/a9/028d7389fc0be4422efaf38782416365d67969
/usr/lib/.build-id/dc
/usr/lib/.build-id/dc/d8bd345f28d55f95c5a510ac88e440c97778d3
/usr/lib/.build-id/de
/usr/lib/.build-id/de/0354325ffca355fc6682f3ac4207f111d42ec1
/usr/lib/.build-id/e0
/usr/lib/.build-id/e0/e81e353fdc4b4cfe6e44c20d65e1eb4740249c
/usr/lib/.build-id/e1
/usr/lib/.build-id/e1/91e088f007b253329756088bedb68948191166
/usr/lib/.build-id/e8
/usr/lib/.build-id/e8/b2f6d6a35c022c66e400c6f6db3d507be54dcd
/usr/share/man/man1/memaslap.1.gz
/usr/share/man/man1/memcapable.1.gz
/usr/share/man/man1/memcat.1.gz
/usr/share/man/man1/memcp.1.gz
/usr/share/man/man1/memdump.1.gz
/usr/share/man/man1/memerror.1.gz
/usr/share/man/man1/memexist.1.gz
/usr/share/man/man1/memflush.1.gz
/usr/share/man/man1/memparse.1.gz
/usr/share/man/man1/memping.1.gz
/usr/share/man/man1/memrm.1.gz
/usr/share/man/man1/memslap.1.gz
/usr/share/man/man1/memstat.1.gz
/usr/share/man/man1/memtouch.1.gz