前端之家收集整理的这篇文章主要介绍了
SQLITE3在tiny6410上的移植,
前端之家小编觉得挺不错的,现在分享给大家,也给大家做个参考。
下载sqlite最新版本3.7.9 http://www.sqlite.org/download.html 源码包: sqlite-autoconf-3071400.tar.gz 解压源码包到/opt目录下: #tar xvzf sqlite-autoconf-3071400.tar.gz –C /opt/ 建立make install目录: # mkdir /opt/build 进入解压出得文件夹中: # cd /opt/sqlite-autoconf-3070900 执行configure命令:生成Makefile文件: # ./configure –-host=arm-linux –prefix=/opt/build 生成Makefile文件后,执行make命令:: # make #make install 完成之后可以发现,之前所建目录/opt/build下生成bin include lib share四个目录。主要用到的文件有./bin/sqlite3 ./include/sqlite3.h以及 ./lib/下的库文件。 bin文件夹下的sqlite3是sqlite可执行应用程序下载到板子Linux系统下的/bin目录或者/usr/bin目录下并添加文件可执行权限。在板子Linux系统命令行下执行:# chmod +x sqlite3 进入sqlite命令行,可以实现对数据库的管理。 [root@FriendlyARM plg]# sqlite3 sqlite version 3.7.9 2011-11-01 00:52:41 Enter ".help" for instructions Enter sql statements terminated with a ";" sqlite> ./include/sqlite3.h定义了sqlite的API接口会在有关sqlite的c文件交叉编译时用到。 ./lib/文件夹下是有关sqlite的静态链接库和动态链接库 # ls lib/ libsqlite3.a libsqlite3.la libsqlite3.so libsqlite3.so.0 libsqlite3.so.0.8.6 pkgconfig 其中libsqlite3.so和libsqlite3.so.0都是libsqlite3.so.0.8.6的软链接文件。真正需要下载到板子目录/lib下的动态库是libsqlite3.so.0.8.6。下载到板子后还需对它建立软链接文件因为可执行程序寻找的动态链接库的名字为libsqlite3.so.0。 # ln -s /lib/libsqlite3.so.0.8.6 /lib/libsqlite3.so.0 到此,sqlite的移植工作已经完成,下面进行测试。 测试程序test_sqlite.c如下: 1. #include <stdio.h> 2. #include <sqlite3.h> 3. 4. static int callback(void *NotUsed,int argc,char **argv,char **azColName) 5. { 6. int i; 7. for(i=0; i<argc; i++) 8. { 9. printf("%s = %s\n",azColName[i],argv[i] ? argv[i] : "NULL"); 10. } 11. printf("\n"); 12. return 0; 13. } 14. 15. int main(int argc,char **argv) 16. { 17. sqlite3 *db; 18. char *zErrMsg = 0; 19. int rc; 20. if( argc!=3 ) 21. { 22. fprintf(stderr,"Usage: %s DATABASE sql-STATEMENT\n",argv[0]); 23. } 24. rc = sqlite3_open(argv[1],&db); 25. if( rc ) 26. { 27. fprintf(stderr,"Can't open database: %s\n",sqlite3_errmsg(db)); 28. sqlite3_close(db); 29. } 30. rc = sqlite3_exec(db,argv[2],callback,&zErrMsg); 31. if( rc!=sqlITE_OK ) 32. { 33. fprintf(stderr,"sql error: %s\n",zErrMsg); 34. } 35. sqlite3_close(db); 36. return 0; 37. } 动态编译: # arm-linux-gcc -o test test_sqlite.c -I /opt/build/include/ -L /opt/build/lib/ -lsqlite3 注:-I制定优先搜索头文件路径: -L制定编译的时候,优先搜索库的路径。 下载到板子上执行: [root@FriendlyARM plg]#./test xyz.db "create table tbl0(name varchar(10),number smallint);" [root@FriendlyARM plg]#./test xyz.db "insert into tbl0 values('cyc',1);" [root@FriendlyARM plg]#./test xyz.db "insert into tbl0 values('dzy',2);" [root@FriendlyARM plg]#./test xyz.db "select * from tbl0;" name = cyc number = 1 name = dzy number = 2 测试成功! 静态编译: # arm-linux-gcc -o test test_sqlite.c -I /opt/build/include/ -L /opt/build/lib/ -static -lsqlite3 /opt/build/lib//libsqlite3.a(sqlite3.o): In function `unixDlSym': /opt/sqlite-autoconf-3070900/sqlite3.c:29926: undefined reference to `dlsym' /opt/build/lib//libsqlite3.a(sqlite3.o): In function `pthreadMutexLeave': /opt/sqlite-autoconf-3070900/sqlite3.c:17807: undefined reference to `pthread_mutex_unlock' /opt/build/lib//libsqlite3.a(sqlite3.o): In function `pthreadMutexTry': /opt/sqlite-autoconf-3070900/sqlite3.c:17769: undefined reference to `pthread_mutex_trylock' /opt/build/lib//libsqlite3.a(sqlite3.o): In function `pthreadMutexEnter': /opt/sqlite-autoconf-3070900/sqlite3.c:17723: undefined reference to `pthread_mutex_lock' /opt/build/lib//libsqlite3.a(sqlite3.o): In function `pthreadMutexFree': /opt/sqlite-autoconf-3070900/sqlite3.c:17680: undefined reference to `pthread_mutex_destroy' /opt/build/lib//libsqlite3.a(sqlite3.o): In function `pthreadMutexAlloc': /opt/sqlite-autoconf-3070900/sqlite3.c:17654: undefined reference to `pthread_mutex_init' /opt/sqlite-autoconf-3070900/sqlite3.c:17637: undefined reference to `pthread_mutexattr_init' /opt/sqlite-autoconf-3070900/sqlite3.c:17638: undefined reference to `pthread_mutexattr_settype' /opt/sqlite-autoconf-3070900/sqlite3.c:17639: undefined reference to `pthread_mutex_init' /opt/sqlite-autoconf-3070900/sqlite3.c:17640: undefined reference to `pthread_mutexattr_destroy' /opt/build/lib//libsqlite3.a(sqlite3.o): In function `unixDlClose': /opt/sqlite-autoconf-3070900/sqlite3.c:29930: undefined reference to `dlclose' /opt/build/lib//libsqlite3.a(sqlite3.o): In function `unixDlError': /opt/sqlite-autoconf-3070900/sqlite3.c:29899: undefined reference to `dlerror' /opt/build/lib//libsqlite3.a(sqlite3.o): In function `unixDlOpen': /opt/sqlite-autoconf-3070900/sqlite3.c:29885: undefined reference to `dlopen' collect2: ld returned 1 exit status 错误信息中提示有线程接口函数,需要线程的动态链接库,要加入-lpthread选项。在网上查找按照网友提供的资料dlopen(),dlclose(),dlerror(),dlsym()函数在头文件#include <dlfcn.h>中,同样需要添加编译选项-ldl。 # arm-linux-gcc -o test test.c -I /opt/build/include/ -L /opt/build/lib -static -lsqlite3 -lpthread –ldl 编译成功:但有一个warning,没有解决,暂时没有发现这个警告对程序影响。 /opt/build/lib/libsqlite3.a(sqlite3.o): In function `unixDlOpen': /opt/sqlite-autoconf-3070900/sqlite3.c:29885: warning: Using 'dlopen' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking 静态编译与动态编译的差别在于:可执行文件较大,即使板子上没有移植动态链接库libsqlite3.so.0,程序也同样可以执行。 原文链接:https://www.f2er.com/sqlite/199144.html