Trouble building the QMYSQL Plugin on Unix (Mint 19.2)

[Bardfast]

Hi,
New here so please forgive any possible infractions of the rules.
I'm trying to build the MySQL plugin. I know that this question has been asked many times before, but nothing that I've seen so far addresses my specific issue.

My environment is as follows:

• Linux Mint 19.2
• Qt version 5.12.5
• Have installed the shared library libmysqlclient.so (using sudo apt-get install --yes libmysqlclient-dev). The consequence of this is that various header files were installed in /usr/include/mysql, and locate mysqlclient.so gives me ...

$ locate mysqlclient.so
/usr/lib/x86_64-linux-gnu/libmysqlclient.so
/usr/lib/x86_64-linux-gnu/libmysqlclient.so.20
/usr/lib/x86_64-linux-gnu/libmysqlclient.so.20.3.14

I have followed the official instructions described here, and so with some variation I did the following ...

$ export QTDIR=/home/george/Qt
$ export QTVERSION=5.12.5
$ cd $QTDIR/$QTVERSION/Src/qtbase/src/plugins/sqldrivers
$ $QTDIR/$QTVERSION/gcc_64/bin/qmake -- MYSQL_PREFIX=/usr/include/mysql

But the result is ...

Running configuration tests...
Done running configuration tests.

Configure summary:

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

Qt is now configured for building. Just run 'make'.
Once everything is built, you must run 'make install'.
Qt will be installed into '/home/george/Qt/5.12.5/gcc_64'.

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

BTW executing ...

$ $QTDIR/$QTVERSION/gcc_64/bin/qmake "INCLUDEPATH+=/usr/include/mysql" "LIBS+=-L/usr/lib/x86_64-linux-gnu -lmysqlclient"

... gave me the same result - i.e.NO MySql. The Instructions then require you to execute ...

make sub-mysql

I have no clue what 'sub-' is intended to mean, so I tried the following alternatives without success ...

$ make mysql
make: Nothing to be done for 'mysql'.

$ make
cd oci/ && ( test -e Makefile || /home/george/Qt/5.12.5/gcc_64/bin/qmake -o Makefile /home/george/Qt/5.12.5/Src/qtbase/src/plugins/sqldrivers/oci/oci.pro ) && make -f Makefile 
make[1]: Entering directory '/home/george/Qt/5.12.5/Src/qtbase/src/plugins/sqldrivers/oci'
g++ -c -pipe -O2 -g -std=c++1y -fvisibility=hidden -fvisibility-inlines-hidden -fno-exceptions -Wall -W -Wvla -Wdate-time -D_REENTRANT -fPIC -DQT_DEPRECATED_WARNINGS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_PLUGIN -DQT_SQL_LIB -DQT_CORE_LIB -I. -I/home/george/Qt/5.12.5/gcc_64/include/QtSql/5.12.5 -I/home/george/Qt/5.12.5/gcc_64/include/QtSql/5.12.5/QtSql -I/home/george/Qt/5.12.5/gcc_64/include/QtCore/5.12.5 -I/home/george/Qt/5.12.5/gcc_64/include/QtCore/5.12.5/QtCore -I/home/george/Qt/5.12.5/gcc_64/include -I/home/george/Qt/5.12.5/gcc_64/include/QtSql -I/home/george/Qt/5.12.5/gcc_64/include/QtCore -I.moc -I/home/qt/openssl-1.1.1b/include -I/home/george/Qt/5.12.5/gcc_64/mkspecs/linux-g++ -o .obj/qsql_oci.o qsql_oci.cpp
qsql_oci.cpp:66:10: fatal error: oci.h: No such file or directory
 #include <oci.h>
          ^~~~~~~
compilation terminated.
Makefile:827: recipe for target '.obj/qsql_oci.o' failed
make[1]: *** [.obj/qsql_oci.o] Error 1
make[1]: Leaving directory '/home/george/Qt/5.12.5/Src/qtbase/src/plugins/sqldrivers/oci'
Makefile:50: recipe for target 'sub-oci-make_first' failed
make: *** [sub-oci-make_first] Error 2

Any suggestions would be most welcome - thanks.

[SGaist]

Hi and welcome to devnet,

Check the test logs to see what error happened exactly.

[Bardfast]

@Bardfast said in Trouble building the QMYSQL Plugin on Unix (Mint 19.2):

$QTDIR/$QTVERSION/gcc_64/bin/qmake -- MYSQL_PREFIX=/usr/include/mysql

Thank you for your reply.

Unfortunately the log doesn't tell me much. The log <./Src/qtbase/src/plugins/sqldrivers/config.log> reads as follows ...

Command line: MYSQL_PREFIX=/usr/include/mysql
Global lib dirs: [/home/qt/openssl-1.1.1b/lib] [/usr/lib/gcc/x86_64-linux-gnu/7 /usr/lib/x86_64-linux-gnu /usr/lib /lib/x86_64-linux-gnu /lib]
Global inc dirs: [/home/qt/openssl-1.1.1b/include] [/usr/include/c++/7 /usr/include/x86_64-linux-gnu/c++/7 /usr/include/c++/7/backward /usr/lib/gcc/x86_64-linux-gnu/7/include /usr/local/include /usr/lib/gcc/x86_64-linux-gnu/7/include-fixed /usr/include/x86_64-linux-gnu /usr/include]
loaded result for library config.sqldrivers.libraries.db2
test config.sqldrivers.libraries.db2 succeeded
loaded result for library config.sqldrivers.libraries.ibase
test config.sqldrivers.libraries.ibase succeeded
loaded result for library config.sqldrivers.libraries.mysql
test config.sqldrivers.libraries.mysql FAILED
loaded result for library config.sqldrivers.libraries.oci
test config.sqldrivers.libraries.oci succeeded
loaded result for library config.sqldrivers.libraries.odbc
test config.sqldrivers.libraries.odbc FAILED
loaded result for library config.sqldrivers.libraries.psql
test config.sqldrivers.libraries.psql FAILED
loaded result for library config.sqldrivers.libraries.sqlite2
test config.sqldrivers.libraries.sqlite2 succeeded
loaded result for library config.sqldrivers.libraries.tds
test config.sqldrivers.libraries.tds FAILED

Is this the 'test' log that you were referring to?