?? berkeleydb安裝 - berkeley db 中國討論區 - powered by ofstar_net.htm
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berkeleyDB安裝</span><br>
<span class="tpc_content"><br><br>我們以redhat9為例開始介紹其安裝過程:<br /><br /> 從其sleepycat公司官網的下載頁<a href='http://dev.sleepycat.com/downloads/releasehistorybdb.html' target=_blank>http://dev.sleepycat.com/downloads/releasehistorybdb.html</a>獲得其安裝包,現在已經更新到4.4.20.<br /> #tar zxfv db-4.x.tgz<br /> #cd db-4.x/build_unix<br /><br /> 1. 如果以gcc編譯的話,進行以下操作:<br /> #vi /dist/configure 在最前面添加:CC gcc<br /> #../dist/configure <br /> #make<br /> #make install<br /> 默認狀態,berkeleyDB的lib和include將被安裝到/usr/local/BerkeleyDB/下,需要更改這個路徑的話,可以將 #../dist/configure一步加上選項--prefix,例如:#../dist/configure --prefix=/opt/BerkeleyDB.<br /> #vi /etc/ld.so.conf 并將berkeleyDB的lib路徑加到該文件的最后一行,這樣才能找到并加載它的庫文件.ld.so.conf是什么東西？它就是系統動態鏈接庫的配置文件。此文件內,存放著可被LINUX共享的動態鏈接庫所在目錄的名字(系統目錄/lib,/usr/lib除外)，各個目錄名間以空白字符(空格，換行等)或冒號或逗號分隔。<br /> #ldconfig<br /> <br /> 2. 如果以armgcc編譯的話,進行以下操作:<br /> 先安裝armgcc,對我說就是在/mnt/setup/program/FFT/FFT-2410光盤-V3.0/linux開發/linux交叉編譯器/tool或者在gmail中附件里armgcc目錄下(除了cross-armv4l-qtE-custom-1.5-3mz.i386.rpm,其他都裝)<br /> #cp /mnt/setup/program/FFT/FFT-2410光盤-V3.0/linux開發/linux交叉編譯器/tool /usr/tmp/<br /> #cd /usr/tmp/tool<br /> #rpm -ivh *<br /> #ldconfig<br /> 這一系列的工具將默認被裝到/opt/host/arm41下.<br /><br /> 安裝db-4.4.20.tgz,你甚至可以直接修改configure文件.而對于4.3.29,則不可直接修改configure文件.<br /> #tar zxfv db-4.x.tgz<br /> #cd db-4.x/build_unix<br /> <br /> #vi /dist/configure<br /> 在最前面添加以下幾行:<br /> CC=/opt/host/armv4l/bin/armv4l-unknown-linux-gcc<br /> AR=/opt/host/armv4l/bin/armv4l-unknown-linux-ar<br /> RANLIB=/opt/host/armv4l/bin/armv4l-unknown-linux-ranlib<br /> STRIP=/opt/host/armv4l/bin/armv4l-unknown-linux-strip<br /><br /> #../dist/configure --prefix=/opt/db --host=arm41-unknown-linux(這樣的話,berkeleyDB的lib和include將被裝到/opt/db下.)<br /><br /> 或者:<br /> #env CC=/opt/host/armv4l/bin/armv4l-unknown-linux-gcc \<br /> AR=/opt/host/armv4l/bin/armv4l-unknown-linux-ar \<br /> RANLIB=/opt/host/armv4l/bin/armv4l-unknown-linux-ranlib \<br /> STRIP=/opt/host/armv4l/bin/armv4l-unknown-linux-strip \<br /> ../dist/configure --prefix=/opt/db --host=arm41-unknown-linux<br /><br /> #make<br /> #make install<br /> #vi /etc/ld.so.conf 并將berkeleyDB的lib路徑加到該文件的最后一行,在這里就是/opt/db/lib<br /> #ldconfig<br /><br />詳見: <a href='http://www.sleepycat.com/docs/ref/build_unix/intro.html' target=_blank>http://www.sleepycat.com/docs/ref/build_unix/intro.html</a><br />附上一段經典的檢測是否裝好的代碼,同時也可以利用該代碼入門:<br />#include <db.h><br />#include <stdio.h><br />#include <stdlib.h><br />#include <pthread.h><br /><br />/* DB的函數執行完成后，返回0代表成功，否則失敗 */<br />void print_error(int ret)<br />{<br /> if(ret != 0)<br /> printf("ERROR: %s\n",db_strerror(ret));<br />}<br /><br />/* 數據結構DBT在使用前，應首先初始化，否則編譯可通過但運行時報參數錯誤 */<br />void init_DBT(DBT * key, DBT * data)<br />{<br /> memset(key, 0, sizeof(DBT));<br /> memset(data, 0, sizeof(DBT));<br />}<br /><br />void main(void)<br />{<br /> DB *dbp; <br /> DBT key, data;<br /> u_int32_t flags; <br /> int ret;<br /><br /> char *fruit = "apple";<br /> int number = 15;<br /> <br /> typedef struct customer<br /> {<br /> int c_id;<br /> char name[10];<br /> char address[20];<br /> int age;<br /> } CUSTOMER;<br /> CUSTOMER cust;<br /> int key_cust_c_id = 1;<br /><br /> cust.c_id = 1;<br /> strncpy(cust.name, "javer", 9);<br /> strncpy(cust.address, "chengdu", 19);<br /> cust.age = 32;<br /><br /> /* 首先創建數據庫句柄 */<br /> ret = db_create(&dbp, NULL, 0);<br /> print_error(ret);<br /> <br /> /* 創建數據庫標志 */<br /> flags = DB_CREATE; <br /><br /> /* 創建一個名為single.db的數據庫，使用B+樹訪問算法，本段代碼演示對簡單數據類型的處理 */<br /> ret = dbp->open(dbp, NULL, "single.db", NULL, DB_BTREE, flags, 0);<br /> print_error(ret);<br /><br /> init_DBT(&key, &data);<br /> <br /> /* 分別對關鍵字和數據賦值和規定長度 */<br /> key.data = fruit;<br /> key.size = strlen(fruit) + 1;<br /> data.data = &number;<br /> data.size = sizeof(int);<br /><br /> /* 把記錄寫入數據庫中，不允許覆蓋關鍵字相同的記錄 */<br /> ret = dbp->put(dbp, NULL, &key, &data,DB_NOOVERWRITE);<br /> print_error(ret);<br /> <br />/* 手動把緩存中的數據刷新到硬盤文件中，實際上在關閉數據庫時，數據會被自動刷新 */<br />dbp->sync()；<br /> <br />init_DBT(&key, &data);<br /><br /> key.data = fruit;<br /> key.size = strlen(fruit) + 1;<br /> <br /> /* 從數據庫中查詢關鍵字為apple的記錄 */<br /> ret = dbp->get(dbp, NULL, &key, &data, 0);<br /> print_error(ret);<br /><br /> /* 特別要注意數據結構DBT的字段data為void *型，所以在對data賦值和取值時，要做必要的類型轉換。 */<br /> printf("The number = %d\n", *(int*)(data.data));<br /> <br /> if(dbp != NULL)<br /> dbp->close(dbp, 0);<br /><br /> ret = db_create(&dbp, NULL, 0);<br /> print_error(ret);<br /><br /> flags = DB_CREATE; <br /><br /> /* 創建一個名為complex.db的數據庫，使用HASH訪問算法，本段代碼演示對復雜數據結構的處理 */<br /> ret = dbp->open(dbp, NULL, "complex.db", NULL, DB_HASH, flags, 0);<br /> print_error(ret);<br /><br /> init_DBT(&key, &data);<br /><br /> key.size = sizeof(int);<br /> key.data = &(cust.c_id);<br /><br /> data.size = sizeof(CUSTOMER);<br /> data.data = &cust;<br /><br /> ret = dbp->put(dbp, NULL, &key, &data,DB_NOOVERWRITE);<br /> print_error(ret);<br /> <br /> memset(&cust, 0, sizeof(CUSTOMER));<br /> <br /> key.size = sizeof(int);<br /> key.data = &key_cust_c_id;<br /><br /> data.data = &cust;<br /> data.ulen = sizeof(CUSTOMER);<br /> data.flags = DB_DBT_USERMEM;<br /><br /> dbp->get(dbp, NULL, &key, &data, 0);<br /> print_error(ret);<br /> <br /> printf("c_id = %d name = %s address = %s age = %d\n",<br /> cust.c_id, cust.name, cust.address, cust.age);<br /> <br /> if(dbp != NULL)<br /> dbp->close(dbp, 0);<br />}<br /> 我們以gcc編譯為例:<br /> gcc test.c -ggdb -I/usr/local/BerkeleyDB.4.3/include/ -L/usr/local/BerkeleyDB.4.3/lib/ -ldb -lpthread,如果你用的是eclipse之類的工具的話,記得加上-I,-L,-l的選項哦.<br /> 如果運行時報錯:error while loading shared libraries:libdb-4.3.so: cannot open shared object file: No such file or directory的錯誤(小烏碰到過),請檢查一下是否把berkeleyDB的lib路徑加入到/etc/ld.so.conf中.<br></span>
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<br>http://blog.sina.com.cn/u/1210195593<br />烏焦巴弓<br>
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<span class="tpc_content"><br><br>在Linux下編譯的時候，應該是CC=gcc吧？<br /><br />我編譯C++的庫，與官方文檔說的方法有所不同：<br />export CC=gcc<br />export CXX=g++<br />cd build_unix<br />../dist/configure --enable-cxx<br />make<br />make install<br /><br />按照官方文檔的方法只能編譯出支持C的庫，無法支持C＋＋<br></span>
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<span class="tpc_content"><br><br>我按照上面的方法安裝后,在測試里面的例子的時候總是報錯:<br />./a.out: error while loading shared libraries: libdb-4.5.so : cannot open shared objects file:No such file or directory<br />不知道是怎么回事,請教各位了!!<br></span>
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