Linux下编译安装PCRE库

最近在学习nginx，nginx rewrite依赖于PCRE库，所以需要在linux系统中编译安装PCRE库。具体步骤如下：

1.下载PCRE包

首先去官网下载pcre的安装包

如果通过FTP的方式，下载地址为：ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/

如果通过http的方式，下载地址为：http://sourceforge.net/projects/pcre/files/pcre/

目前最新的版本为8.32，linux对应的安装包名称为：pcre-8.32.tar.gz。

2.把安装包上传到服务器，然后解压

[root@localhost local]# tar -zxvf pcre-8.32.tar.gz

解压之后在当前目录下生成了一个文件夹：pcre-8.32

drwxr-xr-x 7 1169  1169    4096 Nov 30 18:50 pcre-8.32

3.配置

[root@localhost pcre-8.32]# ./configure

配置完之后控制台会打印出pcre配置的摘要信息

pcre-8.32 configuration summary:

    Install prefix .................. : /usr/local
    C preprocessor .................. : gcc -E
    C compiler ...................... : gcc
    C++ preprocessor ................ : g++ -E
    C++ compiler .................... : g++
    Linker .......................... : /usr/bin/ld
    C preprocessor flags ............ : 
    C compiler flags ................ : -O2 -fvisibility=hidden
    C++ compiler flags .............. : -O2 -fvisibility=hidden -fvisibility-inlines-hidden
    Linker flags .................... : 
    Extra libraries ................. : 

    Build 8 bit pcre library ........ : yes
    Build 16 bit pcre library ....... : no
    Build 32 bit pcre library ....... : no
    Build C++ library ............... : yes
    Enable JIT compiling support .... : no
    Enable UTF-8/16/32 support ...... : no
    Unicode properties .............. : no
    Newline char/sequence ........... : lf
    \R matches only ANYCRLF ......... : no
    EBCDIC coding ................... : no
    EBCDIC code for NL .............. : n/a
    Rebuild char tables ............. : no
    Use stack recursion ............. : yes
    POSIX mem threshold ............. : 10
    Internal link size .............. : 2
    Match limit ..................... : 10000000
    Match limit recursion ........... : MATCH_LIMIT
    Build shared libs ............... : yes
    Build static libs ............... : yes
    Use JIT in pcregrep ............. : no
    Buffer size for pcregrep ........ : 20480
    Link pcregrep with libz ......... : no
    Link pcregrep with libbz2 ....... : no
    Link pcretest with libedit ...... : no
    Link pcretest with libreadline .. : no
    Valgrind support ................ : no
    Code coverage ................... : no

4.编译

执行make操作：

[root@localhost pcre-8.32]# make

 编译完后可以执行make check进行测试（这一步非必须）

Testing pcregrep version 8.32 2012-11-30
Testing pcregrep main features
Skipping pcregrep UTF-8 tests: no UTF-8 support in PCRE library
Testing pcregrep newline settings
PASS: RunGrepTest
==================
All 5 tests passed
==================
make[2]: Leaving directory `/usr/local/pcre-8.32'
make[1]: Leaving directory `/usr/local/pcre-8.32'
[root@localhost pcre-8.32]#

 上面的make check结果中有一句:

Skipping pcregrep UTF-8 tests: no UTF-8 support in PCRE library

 这是因为在前面步骤中执行./configuration配置时没有加上对utf-8的支持

如果要加上对utf-8的支持可以在./configuration时加上参数：

[root@localhost pcre-8.32]# ./configure --enable-utf8

 配置完后再重新make

make完后再次执行make check结果如下：

Testing pcregrep version 8.32 2012-11-30
Testing pcregrep main features
Testing pcregrep UTF-8 features
Testing pcregrep newline settings
PASS: RunGrepTest
==================
All 5 tests passed
==================
make[2]: Leaving directory `/usr/local/pcre-8.32'
make[1]: Leaving directory `/usr/local/pcre-8.32'
[root@localhost pcre-8.32]#

5.安装

执行make install操作：

[root@localhost pcre-8.32]# make install

make install结束后pcre编译安装流程就结束了。