How to create the plugin of MARIADB for Qt5

blackout69

Hi,
My installation is:
Win 7
QT5.10.1
MariaDB 10.2.14

I tray to compile driver with this step:

set mysql=C:\\PROGRA~2\\MARIAD~1.2
cd C:\Qt\5.10.1\Src\qtbase\src\plugins\sqldrivers
qmake sqldrivers.pro
cd C:\Qt\5.10.1\Src\qtbase\src\plugins\sqldrivers\mysql\
qmake "INCLUDEPATH+=%mysql%\\include\\mysql\\server" "LIBS+=%mysql%\\lib\\libmariadb.lib" -o Makefile mysql.pro

I get the message:
Project ERROR: Library 'mysql' is not defined.

In the path C:\PROGRA~2\MARIAD~1.2\LIB
I have the following files:
libmariadb.dll
libmariadb.lib
libmariadb.pbd
mariadbclient.lib
mysqlservices.lib

I do not understand where I'm wrong considering that the same procedure works with MYSQL.
la sola differenza è che con MYSQL ho la libreria libmysql.lib mentre con MARIADB ho libmariadb.lib

blackout69

qmake -- MYSQL_INCDIR=C:\PROGRA~2\MARIAD~1.2\include\mysql "MYSQL_LIBDIR=C:\PROGRA~2\MARIAD~1.2\lib" MYSQL_LIBS="-llibmariadb"

OK this work.
Thank you for your dedicated time.

blackout69

SGaist

Hi,

The instructions for building plugins have change since some times. See here.

blackout69

Thank you SGaist for your replay,
but my installation of MariaDB I do not have an opt folder.

qmake -- MYSQL_INCDIR=C:/MySQL/include "MYSQL_LIBDIR=C:/MYSQL/MySQL Server <version>/lib/opt"

The syntax of this command is not clear. Maybe it's only for Mysql. I want to use MariaDB.
Do you have any link describing the procedure for MariaDB?

Thank you in advance.
blackout69

jsulm

@blackout69 said in How to create the plugin of MARIADB for Qt5:

I do not have an opt folder

then replace it with the folder in which you have MariaDB libs...

blackout69

Thank you jsulm,
I've run the following command:

cd C:\Qt\5.10.1\Src\qtbase\src\plugins\sqldrivers\mysql\
qmake -- MYSQL_INCDIR=C:\\PROGRA~2\\MARIAD~1.2\\include "MYSQL_LIBDIR=C:\\PROGRA~2\\MARIAD~1.2\\lib"

I get this output

Running configuration tests...
Done running configuration tests.

Configure summary:

Qt Sql:
DB2 (IBM) .............................. no
InterBase .............................. no
MySql .................................. no
OCI (Oracle) ........................... no
ODBC ................................... yes
PostgreSQL ............................. no
SQLite2 ................................ no
SQLite ................................. yes
Using system provided SQLite ......... no
TDS (Sybase) ........................... no

Qt is now configured for building. Just run 'mingw32-make'.
Once everything is built, Qt is installed.
You should NOT run 'mingw32-make install'.
Note that this build cannot be deployed to other machines or devices.

Prior to reconfiguration, make sure you remove any leftovers from
the previous build.

mingw32-make

The drivers have been compiled for sqlite and odbc.
I want to compile the driver for mariadb.
How can I enable mariadb driver compilation.

Thanks in advance
blackout69

SGaist

You should check the content of the tests to see what failed for MySQL.

blackout69

Hi all,

I checked the tests, but the config.tests folder is automatically generated when I run the qmake command. It is not clear who decides and with which criteria which drivers to enable and which do not. Consider that I also installed MariaDB Connector, but it does not change anything.
One thing I noticed instead is with the latest version of MariaDB, in the lib folder, there is no libmysql library but I find libmariadb.
Perhaps the script that manages the enabling of the drivers, search for libmysql and not finding it does not enable mysql?

Thanks in advance

SGaist

Hence my question about the content of the folder after it has been created.

blackout69

Hi SGaist,
config.tests.zip

My config.tests folder.
blackout69

SGaist

What do you get if you call make in the mysql subfolder ?

blackout69

C:\Qt\5.10.1\Src\qtbase\src\plugins\sqldrivers\config.tests\mysql>mingw32-make
g++ -c -fno-keep-inline-dllexport -O2 -std=gnu++11 -w -fexceptions -mthreads -DUNICODE -D_UNICODE -DWIN32 -I. -IC:\utils\my_sql\my_sql\include -IC:\utils\postgresql\pgsql\include -IC:\openssl\include -IC:\PROGRA~2\MARIAD~1.2\include -IC:\Qt\5.10.1\mingw53_32\mkspecs\win32-g++  -o main.o main.cpp
main.cpp:5:19: fatal error: mysql.h: No such file or directory
compilation terminated.
Makefile:439: recipe for target 'main.o' failed
mingw32-make: *** [main.o] Error 1

SGaist

Where exactly do you have that file in your system ?

blackout69

C:\Program Files (x86)\MariaDB 10.2\include\mysql
C:\Program Files (x86)\MariaDB 10.2\include\mysql\server

SGaist

Then you are missing the mysql folder in the path given to MYSQL_INCDIR

blackout69

qmake -- MYSQL_INCDIR=C:\PROGRA~2\MARIAD~1.2\include\mysql "MYSQL_LIBDIR=C:\PROGRA~2\MARIAD~1.2\lib"

Configure summary:

Qt Sql:
DB2 (IBM) .............................. no
InterBase .............................. no
MySql .................................. no
OCI (Oracle) ........................... no
ODBC ................................... yes
PostgreSQL ............................. no
SQLite2 ................................ no
SQLite ................................. yes
Using system provided SQLite ......... no
TDS (Sybase) ........................... no

SGaist

Again, check what happens if you try to build the MySQL test application.

blackout69

C:\Qt\5.10.1\Src\qtbase\src\plugins\sqldrivers\config.tests\mysql>mingw32-make
g++ -Wl,-s -Wl,-subsystem,console -mthreads -o mysql.exe main.o -LC:\utils\my_sql\my_sql\lib -LC:\utils\postgresql\pgsql\lib -LC:\PROGRA~2\MARIAD~1.2\lib -llibmysql
C:/Qt/Tools/mingw530_32/bin/../lib/gcc/i686-w64-mingw32/5.3.0/../../../../i686-w64-mingw32/bin/ld.exe: cannot find -llibmysql
collect2.exe: error: ld returned 1 exit status
Makefile:64: recipe for target 'mysql.exe' failed
mingw32-make: *** [mysql.exe] Error 1

My lib folder is:
C:\Program Files (x86)\MariaDB 10.2\lib
libmariadb.dll
libmariadb.lib
libmariadb.pdb
mariadbclient.lib
mysqlservices.lib

SGaist

Try setting MYSQL_LIBS to -lmariadb in addition to the other variables you already set.

blackout69

qmake -- MYSQL_INCDIR=C:\PROGRA~2\MARIAD~1.2\include\mysql "MYSQL_LIBDIR=C:\PROGRA~2\MARIAD~1.2\lib" MYSQL_LIBS="-llibmariadb"

OK this work.
Thank you for your dedicated time.

blackout69

cawlfj

@blackout69

I follow your step to build static mysql but got fail

0: set mysql=c:\mysql
1: cd C:\Qt\Qt5.12.0\5.12.0\Src\qtbase\src\plugins\sqldrivers
2: qmake sqldrivers.pro
3: cd C:\Qt\Qt5.12.0\5.12.0\Src\qtbase\src\plugins\sqldrivers\mysql
4: qmake -- MYSQL_INCDIR=C:\mysql\include "MYSQL_LIBDIR=C:\mysql\lib" MYSQL_LIBS="-lmariadbclient"
got error after this step
Project ERROR: Library 'mysql' is not defined.
5: cd C:\Qt\Qt5.12.0\5.12.0\Src\qtbase\src\plugins\sqldrivers
6: qmake -- MYSQL_INCDIR=C:\mysql\include "MYSQL_LIBDIR=C:\mysql\lib" MYSQL_LIBS="-lmariadbclient"
no error after this step
7: nmake sub-mysql
got error after this step
NMAKE : fatal error U1073: 不知道如何生成“sub-mysql” Stop.
( NMAKE : fatal error U1073: don't know how to generate “sub-mysql” Stop.)

could you help me to correct the steps?
I don't know which step or path is wrong.
Many thanks .