一、openresty问题复现：centos安装openresty-1.11.2.5，./configure后make时报错：

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objs/addon/src/ngx_http_lua_regex.o: In function `ngx_http_lua_regex_free_study_data':
/home/openresty-1.11.2.5/build/nginx-1.11.2/../ngx_lua-0.10.10/src/ngx_http_lua_regex.c:2015: undefined reference to `pcre_free_study'
objs/addon/src/ngx_http_lua_regex.o: In function `ngx_http_lua_ffi_destroy_regex':
/home/openresty-1.11.2.5/build/nginx-1.11.2/../ngx_lua-0.10.10/src/ngx_http_lua_regex.c:2413: undefined reference to `pcre_free_study'
objs/addon/src/ngx_http_lua_regex.o: In function `ngx_http_lua_ffi_compile_regex':
/home/openresty-1.11.2.5/build/nginx-1.11.2/../ngx_lua-0.10.10/src/ngx_http_lua_regex.c:2268: undefined reference to `pcre_assign_jit_stack'
objs/addon/src/ngx_http_lua_regex.o: In function `ngx_http_lua_ngx_re_gmatch':
/home/openresty-1.11.2.5/build/nginx-1.11.2/../ngx_lua-0.10.10/src/ngx_http_lua_regex.c:828: undefined reference to `pcre_assign_jit_stack'
objs/addon/src/ngx_http_lua_regex.o: In function `ngx_http_lua_ffi_set_jit_stack_size':
/home/openresty-1.11.2.5/build/nginx-1.11.2/../ngx_lua-0.10.10/src/ngx_http_lua_regex.c:1950: undefined reference to `pcre_jit_stack_free'
/home/openresty-1.11.2.5/build/nginx-1.11.2/../ngx_lua-0.10.10/src/ngx_http_lua_regex.c:1957: undefined reference to `pcre_jit_stack_alloc'
objs/addon/src/ngx_http_lua_regex.o: In function `ngx_http_lua_ngx_re_match_helper':
/home/openresty-1.11.2.5/build/nginx-1.11.2/../ngx_lua-0.10.10/src/ngx_http_lua_regex.c:362: undefined reference to `pcre_assign_jit_stack'
collect2: ld returned 1 exit status
gmake[2]: *** [objs/nginx] Error 1
gmake[2]: Leaving directory `/home/openresty-1.11.2.5/build/nginx-1.11.2'
gmake[1]: *** [build] Error 2
gmake[1]: Leaving directory `/home/openresty-1.11.2.5/build/nginx-1.11.2'
gmake: *** [all] Error 2

很明显是pcre的问题，Google说是pcre版本问题；

解决办法：

1.下载新版本pcre，我下载的是pcre-8.38，解压，不需要安装；我服务器原版本是pcre-7.8.7

2.然后openresty目录下执行./configure时指定PCRE库的源码路径–with-pcre=/home/pcre-8.38

例：./configure –with-pcre=/home/pcre-8.38 (已省略其他编译参数，需要自行添加)

然后make，make install即可

二、安装verynginx时报同样错误

复现：python install.py install安装verynginx时,报同样错误;

解决：VeryNginx目录下install.py中大约51行处找到exec_sys_cmd( ‘./configure –prefix=/opt/verynginx/openresty –user=nginx –group=nginx –with-http_v2_module –with-http_sub_module –with-http_stub_status_module –with-luajit ‘ )

后面同样加上–with-pcre=/home/pcre-8.38

即：exec_sys_cmd( ‘./configure –prefix=/opt/verynginx/openresty –user=nginx –group=nginx –with-http_v2_module –with-http_sub_module –with-http_stub_status_module –with-luajit –with-pcre=/home/pcre-8.38’ )

然后再执行python install.py install即可

参考地址：https://groups.google.com/forum/#!msg/openresty/o4CKvsp3Gio/9kiGJVSECgAJ

https://github.com/openresty/lua-nginx-module/issues/781

http://www.runoob.com/w3cnote/nginx-install-and-config.html