PCRE(Perl Compatible Regular Expressions)是一个轻量级的Perl函数库，包括 perl 兼容的正则表达式库。它比Boost之类的正则表达式库小得多。PCRE十分易用，同时功能也很强大，性能超过了POSIX正则表达式库和一些经典的正则表达式库。
1.PCRE目前最新版本为8.36，可以点http://sourceforge.net/projects/pcre/files/pcre/进行下载。
2.使用tar -zxvf pcre-8.36.tar.gz进行解压。
3.运行 chmod -R 777 /pcre-8.36 对当前文件夹授予全部读写权限。
4.切换到/pcre-8.36目录下，运行 ./configure 进行pcre初始化配置，会在控制台打印出一大堆的输出信息。
5.执行make操作，进行编译。
[root@server06 pcre-8.36]# make
rm -f pcre_chartables.c
ln -s ./pcre_chartables.c.dist pcre_chartables.c
make all-am
make[1]: Entering directory `/opt/nginx/pcre-8.36'
CC libpcre_la-pcre_byte_order.lo
CC libpcre_la-pcre_compile.lo
CC libpcre_la-pcre_config.lo
CC libpcre_la-pcre_dfa_exec.lo
CC libpcre_la-pcre_exec.lo
CC libpcre_la-pcre_fullinfo.lo
CC libpcre_la-pcre_get.lo
CC libpcre_la-pcre_globals.lo
CC libpcre_la-pcre_jit_compile.lo
CC libpcre_la-pcre_maketables.lo
CC libpcre_la-pcre_newline.lo
CC libpcre_la-pcre_ord2utf8.lo
CC libpcre_la-pcre_refcount.lo
CC libpcre_la-pcre_string_utils.lo
CC libpcre_la-pcre_study.lo
CC libpcre_la-pcre_tables.lo
CC libpcre_la-pcre_ucd.lo
CC libpcre_la-pcre_valid_utf8.lo
CC libpcre_la-pcre_version.lo
CC libpcre_la-pcre_xclass.lo
CC libpcre_la-pcre_chartables.lo
CCLD libpcre.la
CC libpcreposix_la-pcreposix.lo
CCLD libpcreposix.la
CXX libpcrecpp_la-pcrecpp.lo
CXX libpcrecpp_la-pcre_scanner.lo
CXX libpcrecpp_la-pcre_stringpiece.lo
CXXLD libpcrecpp.la
CC pcretest-pcretest.o
CC pcretest-pcre_printint.o
CCLD pcretest
CC pcregrep-pcregrep.o
CCLD pcregrep
CXX pcrecpp_unittest-pcrecpp_unittest.o
CXXLD pcrecpp_unittest
CXX pcre_scanner_unittest-pcre_scanner_unittest.o
CXXLD pcre_scanner_unittest
CXX pcre_stringpiece_unittest-pcre_stringpiece_unittest.o
CXXLD pcre_stringpiece_unittest
make[1]: Leaving directory `/opt/nginx/pcre-8.36'
6.运行 [root@server06 pcre-8.36]# make install，进行安装，至此PCRE安装完成。
[root@server06 pcre-8.36]# make install