Nginx的Urlrewrite模块依赖PCRE，而Nginx不能很好的识别到系统中的PCRE，在make时可能遇到类似这样的错误：

make -f objs/Makefile
make[1]: Entering directory `/root/nginx-0.7.65'
cd /usr/local/lib/pcre \
        && if [ -f Makefile ]; then make distclean; fi \
        && CC="gcc" CFLAGS="-O2 -fomit-frame-pointer -pipe " \
        ./configure --disable-shared
/bin/sh: line 0: cd: /usr/local/lib/pcre: No such file or directory
make[1]: *** [/usr/local/lib/pcre/Makefile] Error 1
make[1]: Leaving directory `/root/nginx-0.7.65'
make: *** [build] Error 2

原因是nginx不能自动找到pcre的库文件，下载最新的pcre源码包安装后：

#mkdir -p /usr/local/lib/.libs/
# cp /usr/local/lib/libpcre.a /usr/local/lib/.libs/libpcre.a

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