centOS7下使用cmake編譯mariadbpp出錯

• 2020 年 2 月 13 日
• 筆記

mariadbpp是C++的mariadb庫，最近在CentOS7下編譯mariadbpp總出錯，錯誤資訊如下：

CMake Error at CMakeLists.txt:17 (find_package):   By not providing "FindMariaDBClient.cmake" in CMAKE_MODULE_PATH this   project has asked CMake to find a package configuration file provided by   "MariaDBClient", but CMake did not find one.     Could not find a package configuration file provided by "MariaDBClient"   with any of the following names:       MariaDBClientConfig.cmake     mariadbclient-config.cmake     Add the installation prefix of "MariaDBClient" to CMAKE_PREFIX_PATH or set   "MariaDBClient_DIR" to a directory containing one of the above files.  If   "MariaDBClient" provides a separate development package or SDK, be sure it has been

我在CentOS7系統下已經使用yum安裝了mariadb資料庫，包括mariadb的C語言庫mariadb-connector-c 安裝mariadb-connector-c很簡單，在mariadb-connector-c所在目錄直接運行如下命令即可：

[root@VM_0_9_centos mariadb-connector-c]#  [root@VM_0_9_centos mariadb-connector-c]# mkdir build  [root@VM_0_9_centos mariadb-connector-c]# cd build/  [root@VM_0_9_centos build]# ls  [root@VM_0_9_centos build]# cmake ..  -- The C compiler identification is GNU 4.8.5  -- Check for working C compiler: /usr/bin/cc  -- Check for working C compiler: /usr/bin/cc -- works  ....................  [root@VM_0_9_centos build]# make  [root@VM_0_9_centos build]# make  install

剛開始的時候我是直接從github上面下載的mariadbpp的zip壓縮包，然後和上面相同的方式使用cmake編譯總是報錯。 最後使用google在stackoverflow上面找到一篇俄文的問題在C ++中連接MariaDB 在github上面https://github.com/viaduck/mariadbpp 我直接在CentOS7中使用git克隆源程式碼，然後按照如下方法編譯源程式碼

Initialize Git submodules: git submodule update --init  Install mariadbclient or mysqlclient libraries.  Link against the mariadbclientpp CMake target in your project.

git clone https://github.com/viaduck/mariadbpp.git  cd mariadbpp  git submodule update --init  mkdir build  cd build  cmake ..  make  make install

默認mariadbpp編譯出來的是靜態庫，如果需要動態庫需要稍微修改下CMakeLists.txt文件的

# set up target   add_library(mariadbclientpp ${mariadbclientpp_SOURCES} ${mariadbclientpp_PUBLIC_HEADERS} ${mariadbclientpp_PRIVATE    _HEADERS})

修改成

# set up target  add_library(mariadbclientpp SHARED ${mariadbclientpp_SOURCES} ${mariadbclientpp_PUBLIC_HEADERS} ${mariadbclientpp_PRIVATE    _HEADERS})

即加了一個SHARED 默認在/usr/local/lib/目錄下生成的是libmariadbclientpp.a靜態庫文件，修改後在/usr/local/lib/目錄下生成的是libmariadbclientpp.so動態庫文件。 這樣就可以使用mariadbpp庫，編寫C++程式碼操作mysql或者mariadb資料庫了。

參考資料： 1、mariadbpp 2、在C ++中連接MariaDB 3、《CMake實踐》筆記三：構建靜態庫(.a) 與 動態庫(.so) 及 如何使用外部共享庫和頭文件 4、mariadb-connector-c