42.linux下安装pcre库：编程测试正则表达式

测试正则表达式"/>

42.linux下安装pcre库：编程测试正则表达式

目录

• 一：pcre简介：
• 二：编译：
• 三：遇到的问题：
• 四：测试：
• 五：移植到ARM：
• 六：移植遇到的问题：

一：pcre简介：

PCRE(Perl Compatible Regular Expressions中文含义：perl语言兼容正则表达式)是一个用C语言编写的正则表达式函数库，由菲利普.海泽(Philip Hazel)编写。PCRE是一个轻量级的函数库，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。

二：编译：

sudo tar -zxvf pcre-8.39.tar.gz -C .
sudo chown -R aston pcre-8.39
mkdir install_lib
sudo ./configure --prefix=/home/aston/huawei/pcre-8.39/install_lib 
sudo make
sudo make install

三：遇到的问题：

1.报错1：

aston@ubuntu:/mnt/hgfs/share/source_insight/main_135/test_pcre$ ./app.out
./app.out: error while loading shared libraries: libpcre.so.1: cannot open shared object file: No such file or directory

原因：程序找不到pcre相关动态库；

解决： 拷贝pcre相关库到：/usr/local/lib/

aston@ubuntu:~/huawei/pcre-8.39/install_lib/lib$ sudo cp *pcre* /usr/local/lib/ -rf

重新测试运行正常：

aston@ubuntu:/mnt/hgfs/share/source_insight/main_135/test_pcre$ ./app.out good_afmbone..se
result is: 0

四：测试：

1.代码：

#include <stdio.h>
#include <stdlib.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <assert.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include "pcre.h"#include <iostream>
#include <string>using namespace std;#define OVECCOUNT 30 /* should be a multiple of 3 */
#define EBUFLEN 128
#define BUFLEN 1024int main()
{pcre *reCM, *reUN, *reTC, *reCDMA;const char *error;int erroffset;int ovector[OVECCOUNT];int rcCM, rcUN, rcTC, rcCDMA, i;/*yidong:134.135.136.137.138.139.150.151.152.157.158.159.187.188,147liandong:130.131.132.155.156.185.186dianxin:133.153.180.189CDMA :133,153*/char src[22];char pattern_CM[] = "^1(3[4-9]|5[012789]|8[78])\\d{8}$";char pattern_UN[] = "^1(3[0-2]|5[56]|8[56])\\d{8}$";char pattern_TC[] = "^18[09]\\d{8}$";char pattern_CDMA[] = "^1[35]3\\d{8}$";printf("please input your telephone number \n");scanf("%s", src);printf("String : %s\n", src);printf("Pattern_CM: \"%s\"\n", pattern_CM);printf("Pattern_UN: \"%s\"\n", pattern_UN);printf("Pattern_TC: \"%s\"\n", pattern_TC);printf("Pattern_CDMA: \"%s\"\n", pattern_CDMA);reCM = pcre_compile(pattern_CM, 0, &error, &erroffset, NULL);reUN = pcre_compile(pattern_UN, 0, &error, &erroffset, NULL);reTC = pcre_compile(pattern_TC, 0, &error, &erroffset, NULL);reCDMA = pcre_compile(pattern_CDMA, 0, &error, &erroffset, NULL);if (reCM==NULL && reUN==NULL && reTC==NULL && reCDMA==NULL) {printf("PCRE compilation telephone failed at offset %d: %s\n", erroffset, error);return 1;}rcCM = pcre_exec(reCM, NULL, src, strlen(src), 0, 0, ovector, OVECCOUNT);rcUN = pcre_exec(reUN, NULL, src, strlen(src), 0, 0, ovector, OVECCOUNT);rcTC = pcre_exec(reTC, NULL, src, strlen(src), 0, 0, ovector, OVECCOUNT);rcCDMA = pcre_exec(reCDMA, NULL, src, strlen(src), 0, 0, ovector, OVECCOUNT);if (rcCM<0 && rcUN<0 && rcTC<0 && rcCDMA<0) {if (rcCM==PCRE_ERROR_NOMATCH && rcUN==PCRE_ERROR_NOMATCH &&rcTC==PCRE_ERROR_NOMATCH && rcTC==PCRE_ERROR_NOMATCH) {printf("Sorry, no match ...\n");}else {printf("Matching error %d\n", rcCM);printf("Matching error %d\n", rcUN);printf("Matching error %d\n", rcTC);printf("Matching error %d\n", rcCDMA);}free(reCM);free(reUN);free(reTC);free(reCDMA);return 1;}printf("\nOK, has matched ...\n\n");if (rcCM > 0) {printf("Pattern_CM: \"%s\"\n", pattern_CM);printf("String : %s\n", src);}if (rcUN > 0) {printf("Pattern_UN: \"%s\"\n", pattern_UN);printf("String : %s\n", src);}if (rcTC > 0) {printf("Pattern_TC: \"%s\"\n", pattern_TC);printf("String : %s\n", src);}if (rcCDMA > 0) {printf("Pattern_CDMA: \"%s\"\n", pattern_CDMA);printf("String : %s\n", src);}free(reCM);free(reUN);free(reTC);free(reCDMA);return 0;
}

2.打印：

aston@ubuntu:/mnt/hgfs/share/source_insight/main_135/test_pcre$ ./app.out 
please input your telephone number 
15000732435
String : 15000732435
Pattern_CM: "^1(3[4-9]|5[012789]|8[78])\d{8}$"
Pattern_UN: "^1(3[0-2]|5[56]|8[56])\d{8}$"
Pattern_TC: "^18[09]\d{8}$"
Pattern_CDMA: "^1[35]3\d{8}$"OK, has matched ...Pattern_CM: "^1(3[4-9]|5[012789]|8[78])\d{8}$"
String : 15000732435

五：移植到ARM：

1.编译：

cp -rf /mnt/hgfs/share/source_insight/main_135/obs_sdk/pcre-8.39.tar.gz .
sudo tar -zxvf pcre-8.39.tar.gz -C .
sudo chown -R aston pcre-8.39
mkdir install_libsudo ./configure --prefix=/home/aston/huawei_linux/pcre-8.39/install_lib --host=arm-linux CC=/opt/hisi-linux/x86-arm/arm-hisiv300-linux/target/bin/arm-hisiv300-linux-gcc CXX=/opt/hisi-linux/x86-arm/arm-hisiv300-linux/target/bin/arm-hisiv300-linux-g++ sudo make
sudo make install

六：移植遇到的问题：

1.报错：

./.libs/libpcre.so: could not read symbols: File in wrong format

原因：找不到C++的交叉编译工具链；

解决：
添加CXX交叉编译工具链：

sudo ./configure --prefix=/home/aston/huawei_linux/pcre-8.39/install_lib --host=arm-linux CC=/opt/hisi-linux/x86-arm/arm-hisiv300-linux/target/bin/arm-hisiv300-linux-gcc CXX=/opt/hisi-linux/x86-arm/arm-hisiv300-linux/target/bin/arm-hisiv300-linux-g++ 

2.warning提示：

libtool: warning: library '/opt/hisi-linux/x86-arm/arm-hisiv300-linux/bin/../lib/gcc/arm-hisiv300-linux-uclibcgnueabi/4.8.3/../../../../arm-hisiv300-linux-uclibcgnueabi/lib/libstdc++.la' was moved.
libtool: warning: library '/opt/hisi-linux/x86-arm/arm-hisiv300-linux/bin/../lib/gcc/arm-hisiv300-linux-uclibcgnueabi/4.8.3/../../../../arm-hisiv300-linux-uclibcgnueabi/lib/libstdc++.la' was moved.
ls /opt/hisi-linux/x86-arm/arm-hisiv300-linux/bin/../lib/gcc/arm-hisiv300-linux-uclibcgnueabi/4.8.3/../../../../arm-hisiv300-linux-uclibcgnueabi/lib/ -l

解决：可忽略，不影响：

3.报错：和库不兼容incompatible：

aston@ubuntu:/mnt/hgfs/share/source_insight/main_135/test_pcre_linux$ make
g++ test_pcre2.cpp -g -I./include -L./lib -lpcre -lpcreposix -lpcrecpp -ldl -lpthread -o app.out
/usr/bin/ld: skipping incompatible ./lib/libpcre.so when searching for -lpcre
/usr/bin/ld: skipping incompatible ./lib/libpcre.a when searching for -lpcre

原因：
查看so文件和app.out格式：
发现不一致：

解决： 编译app.out 时使用交叉编译工具链即可。

aston@ubuntu:/mnt/hgfs/share/source_insight/main_135/test_pcre_linux$ make
arm-hisiv300-linux-g++ test_pcre2.cpp -g -I./include -L./lib -lpcre -lpcreposix -lpcrecpp -ldl -lpthread -o app.out

4.报错：找不到库文件：

./app.out: can't load library 'libpcre.so.1'
/mnt/test # ./app.out 

原因：linux系统中当前无pcre库：

解决：
拷贝pcre相关动态库到/usr/lib即可：

cp *so* /usr/lib/ -rf/mnt/test # ls /usr/lib/*pcre*
/usr/lib/libpcre.so             /usr/lib/libpcrecpp.so.0.0.1
/usr/lib/libpcre.so.1           /usr/lib/libpcreposix.so
/usr/lib/libpcre.so.1.2.7       /usr/lib/libpcreposix.so.0
/usr/lib/libpcrecpp.so          /usr/lib/libpcreposix.so.0.0.4
/usr/lib/libpcrecpp.so.0