银河麒麟QT连接DM8数据库

1. 安装达梦8

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官网下载, 按照官方文档进行安装即可.

2. 安装unixodbc

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1> 下载odbc安装包 unixODBC-2.3.7pre.tar.gz
2> 解压

tar -xvf unixODBC-2.3.7pre.tar.gz

3> 编译

./configure -prefix /usr/local
make && make install

4> 查找配置

odbcinst -j

5> 修改配置/usr/local/etc/odbcinst.ini

[DM8 ODBC DRIVER]
Description = ODBC DRIVER FOR DM8
Driver = /dm8/bin/libdodbc.so

6> 修改配置/usr/local/etc/odbc.ini

[DM8]
Description = DM ODBC DSND
Driver = DM8 ODBC DRIVER
SERVER = localhost
UID = SIMDB
PWD = systemdba
TCP_PORT = 5236

3. 编译QT环境QODBC驱动

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/opt/Qt5.9.6/5.9.6/Src/qtbase/src/plugins/sqldrivers/odbc

4. 报错

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4.1 找不到qtsqldrivers-config.pri

解决措施:
step1. 修改/opt/Qt5.9.6/5.9.6/Src/qtbase/src/plugins/sqldrivers/qsqldriverbase.pri文件

QT  = core core-private sql-private

# For QMAKE_USE in the parent projects.
#include($$shadowed($$PWD)/qtsqldrivers-config.pri)
include($$shadowed($$PWD)/configure.pri)

PLUGIN_TYPE = sqldrivers
load(qt_plugin)

DEFINES += QT_NO_CAST_TO_ASCII QT_NO_CAST_FROM_ASCII

step2. 修改odbc.pro文件, 注释掉QMAKE_USE += odbc
step3. 执行/opt/Qt5.9.6/5.9.6/gcc_64/bin/qmake “LIBS+=-L/usr/local/lib -lodbc”
step4. make
step5. 执行cp …/plugins/sqldrivers/libqsqlodbc.so /opt/Qt5.9.6/5.9.6/gcc_64/plugins/sqldrivers/

4.2 QODBC未加载, 但是提示QODBC avaiable

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可能原因及解决措施:
1> 配置问题, 检查配置, 标红的地方需要一致

2> 可能是QODBC库依赖不全, ldd查看一下补全依赖即可!