Solved Unable to deploy Qt app under Linux
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ldd result on the deployed machine:
mbnoimivm@ubuntu:~/files$ ./SyncAccountsManager.sh QSqlDatabase: QMYSQL driver not loaded QSqlDatabase: available drivers: QSQLITE QMYSQL QMYSQL3 QPSQL QPSQL7 Unable to connect! ^C mbnoimivm@ubuntu:~/files$ ldd bin/SyncAccountsManager bin/SyncAccountsManager: /usr/lib/x86_64-linux-gnu/libQt5Core.so.5: no version information available (required by bin/SyncAccountsManager) bin/SyncAccountsManager: /usr/lib/x86_64-linux-gnu/libQt5Core.so.5: no version information available (required by bin/SyncAccountsManager) bin/SyncAccountsManager: /usr/lib/x86_64-linux-gnu/libQt5Sql.so.5: no version information available (required by bin/SyncAccountsManager) linux-vdso.so.1 => (0x00007ffe1044f000) libQt5Sql.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Sql.so.5 (0x00007f62ea9c7000) libQt5Core.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 (0x00007f62ea321000) libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f62ea01c000) libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f62e9e06000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f62e9a41000) libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f62e9822000) libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f62e9609000) libicui18n.so.52 => /usr/lib/x86_64-linux-gnu/libicui18n.so.52 (0x00007f62e9202000) libicuuc.so.52 => /usr/lib/x86_64-linux-gnu/libicuuc.so.52 (0x00007f62e8e88000) libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f62e8c84000) libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f62e897c000) librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f62e8773000) libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f62e846d000) /lib64/ld-linux-x86-64.so.2 (0x00005653e78dc000) libicudata.so.52 => /usr/lib/x86_64-linux-gnu/libicudata.so.52 (0x00007f62e6bff000) libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f62e69c1000) mbnoimivm@ubuntu:~/files$
Ok so it looks like it is picking up your system Qt and not the one you want it to use. That is controlled with LD_LIBRARY_PATH.. In your synaccountsmanager.sh it may be working but since you used
ldd bin/SyncAccountsManager
it didn't use the ld library path properly so it could be right but from what I'm looking at it's definitely not.So run ldd like this:
$ cd yourapp/bin $ LD_LIBRARY_PATH="../libs" ldd ./SyncAccountsManager
That should give us the output we want. Also make sure your
.sh
start script sets your LD_LIBRARY_PATH just like that. You could try running it straight on the command line like that and see if it works. If not the ldd output will be useful at least.One of the things that is most concerning is this line:
bin/SyncAccountsManager: /usr/lib/x86_64-linux-gnu/libQt5Sql.so.5: no version information available (required by bin/SyncAccountsManager)
Also I don't see libQt5Sql.so.5 in your libs directory. I'm sure you need that if you're using SQL. ;)
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@ambershark said in Unable to deploy Qt app under Linux:
Ok so it looks like it is picking up your system Qt and not the one you want it to use. That is controlled with LD_LIBRARY_PATH.. In your synaccountsmanager.sh it may be working but since you used ldd bin/SyncAccountsManager it didn't use the ld library path properly so it could be right but from what I'm looking at it's definitely not.
The content of SyncAccountsManager.sh
#!/bin/sh dir="$(dirname `readlink -f $0`)" LD_LIBRARY_PATH="$dir/libs:$LD_LIBRARY_PATH" QT_QPA_FONTDIR="$dir/fonts" export LD_LIBRARY_PATH QT_QPA_FONTDIR exec $dir/bin/SyncAccountsManagermyapp "$\@"
So run ldd like this:
$ cd yourapp/bin
$ LD_LIBRARY_PATH="../libs" ldd ./SyncAccountsManagerThat should give us the output we want. Also make sure your .sh start script sets your LD_LIBRARY_PATH just like that. You could try running it straight on the command line like that and see if it works.
The result of ldd:
mbnoimivm@ubuntu:~$ cd files/bin mbnoimivm@ubuntu:~/files/bin$ LD_LIBRARY_PATH="../libs" ldd ./SyncAccountsManager linux-vdso.so.1 => (0x00007ffe11f17000) libQt5Sql.so.5 => ../libs/libQt5Sql.so.5 (0x00007f73059e7000) libQt5Core.so.5 => ../libs/libQt5Core.so.5 (0x00007f73052cc000) libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f7304fbf000) libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f7304da9000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f73049e4000) libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f73047c5000) libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f73044bf000) libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f73042a6000) libicui18n.so.56 => ../libs/libicui18n.so.56 (0x00007f7303e0b000) libicuuc.so.56 => ../libs/libicuuc.so.56 (0x00007f7303a53000) libicudata.so.56 => ../libs/libicudata.so.56 (0x00007f7302070000) libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f7301e6b000) libgthread-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgthread-2.0.so.0 (0x00007f7301c69000) librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f7301a61000) libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f7301758000) /lib64/ld-linux-x86-64.so.2 (0x000055c051da4000) libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f730151a000) mbnoimivm@ubuntu:~/files/bin$
Also I don't see libQt5Sql.so.5 in your libs directory. I'm sure you need that if you're using SQL. ;)
No, it's in my files tree see above please.
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I tried the following but I got same result:
mbnoimivm@ubuntu:~/files/bin$ LD_LIBRARY_PATH="../libs" ./SyncAccountsManager QSqlDatabase: QMYSQL driver not loaded QSqlDatabase: available drivers: QSQLITE QMYSQL QMYSQL3 QPSQL QPSQL7 Unable to connect! ^C mbnoimivm@ubuntu:~/files/bin$
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Sure is in that list, I must have missed it.. Ok so let's try moving those sqldrivers... Sometimes I have issues with where Qt looks for plugins.
Instead of
plugins/sqldrivers
try making a copy of those libsql.so files inplugins/
. Then see if that works. I'll try to think of anything else that might be going on while you try that. -
Ok then after that lets see if this is a mysql problem and not a Qt one. Run
ldd libqsqlmysql.so
and post that output. It may be looking for a mysql library that was upgraded and no longer on your system.Oh and it shouldn't affect the driver only class availability but make sure you have
QT += sql
in your pro file. Just in case it does affect it... But I doubt it will. -
@ambershark said in Unable to deploy Qt app under Linux:
Instead of plugins/sqldrivers try making a copy of those libsql.so files in plugins/. Then see if that works. I'll try to think of anything else that might be going on while you try that.
Same error :(
mbnoimivm@ubuntu:~$ files/SyncAccountsManager.sh QSqlDatabase: QMYSQL driver not loaded QSqlDatabase: available drivers: QSQLITE QMYSQL QMYSQL3 QPSQL QPSQL7 Unable to connect! ^C mbnoimivm@ubuntu:~$ tree -R files/ files/ ├── bin │ ├── qt.conf │ └── SyncAccountsManager ├── libs │ ├── libicudata.so.56 │ ├── libicudata.so.56.1 │ ├── libicui18n.so.56 │ ├── libicui18n.so.56.1 │ ├── libicuuc.so.56 │ ├── libicuuc.so.56.1 │ ├── libqgsttools_p.prl │ ├── libqgsttools_p.so │ ├── libqgsttools_p.so.1 │ ├── libqgsttools_p.so.1.0 │ ├── libqgsttools_p.so.1.0.0 │ ├── libQt5Core.so │ ├── libQt5Core.so.5 │ ├── libQt5Core.so.5.7 │ ├── libQt5Core.so.5.7.0 │ ├── libQt5Sql.la │ ├── libQt5Sql.prl │ ├── libQt5Sql.so │ ├── libQt5Sql.so.5 │ ├── libQt5Sql.so.5.7 │ ├── libQt5Sql.so.5.7.0 │ └── plugins │ ├── libqsqlite.so │ ├── libqsqlmysql.so │ ├── libqsqlpsql.so │ ├── libQt5Sql.la │ ├── libQt5Sql.prl │ ├── libQt5Sql.so │ ├── libQt5Sql.so.5 │ ├── libQt5Sql.so.5.7 │ ├── libQt5Sql.so.5.7.0 │ ├── platforms │ │ ├── libqeglfs.so │ │ ├── libqlinuxfb.so │ │ ├── libqminimalegl.so │ │ ├── libqminimal.so │ │ ├── libqoffscreen.so │ │ └── libqxcb.so │ └── sqldrivers │ ├── libqsqlite.so │ ├── libqsqlmysql.so │ └── libqsqlpsql.so └── SyncAccountsManager.sh 5 directories, 42 files mbnoimivm@ubuntu:~$
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@ambershark said in Unable to deploy Qt app under Linux:
Ok then after that lets see if this is a mysql problem and not a Qt one. Run ldd libqsqlmysql.so and post that output. It may be looking for a mysql library that was upgraded and no longer on your system.
mbnoimivm@ubuntu:~/files/libs/plugins/sqldrivers$ ldd libqsqlmysql.so ./libqsqlmysql.so: /usr/lib/x86_64-linux-gnu/libQt5Sql.so.5: no version information available (required by ./libqsqlmysql.so) ./libqsqlmysql.so: /usr/lib/x86_64-linux-gnu/libQt5Sql.so.5: no version information available (required by ./libqsqlmysql.so) ./libqsqlmysql.so: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `CXXABI_1.3.9' not found (required by ./libqsqlmysql.so) ./libqsqlmysql.so: /usr/lib/x86_64-linux-gnu/libQt5Core.so.5: no version information available (required by ./libqsqlmysql.so) ./libqsqlmysql.so: /usr/lib/x86_64-linux-gnu/libQt5Core.so.5: no version information available (required by ./libqsqlmysql.so) ./libqsqlmysql.so: /usr/lib/x86_64-linux-gnu/libQt5Core.so.5: no version information available (required by ./libqsqlmysql.so) linux-vdso.so.1 => (0x00007fff87591000) libmysqlclient.so.20 => /usr/lib/x86_64-linux-gnu/libmysqlclient.so.20 (0x00007faa39173000) libQt5Sql.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Sql.so.5 (0x00007faa38f34000) libQt5Core.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 (0x00007faa3888d000) libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007faa38589000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007faa381c4000) libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007faa37fbf000) libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007faa37da1000) libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007faa37a9b000) libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007faa37884000) libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007faa3766b000) libicui18n.so.52 => /usr/lib/x86_64-linux-gnu/libicui18n.so.52 (0x00007faa37264000) libicuuc.so.52 => /usr/lib/x86_64-linux-gnu/libicuuc.so.52 (0x00007faa36eea000) libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007faa36be2000) librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007faa369da000) /lib64/ld-linux-x86-64.so.2 (0x000055741e96f000) libicudata.so.52 => /usr/lib/x86_64-linux-gnu/libicudata.so.52 (0x00007faa3516c000) libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007faa34f2e000) mbnoimivm@ubuntu:~/files/libs/plugins/sqldrivers$
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I tried to apply
strip
but unfortunately it didn't fix the problemmbnoimivm@ubuntu:~/files/libs/plugins/sqldrivers$ strip libqsqlmysql.so mbnoimivm@ubuntu:~/files/libs/plugins/sqldrivers$ ldd libqsqlmysql.so ./libqsqlmysql.so: /usr/lib/x86_64-linux-gnu/libQt5Sql.so.5: no version information available (required by ./libqsqlmysql.so) ./libqsqlmysql.so: /usr/lib/x86_64-linux-gnu/libQt5Sql.so.5: no version information available (required by ./libqsqlmysql.so) ./libqsqlmysql.so: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `CXXABI_1.3.9' not found (required by ./libqsqlmysql.so) ./libqsqlmysql.so: /usr/lib/x86_64-linux-gnu/libQt5Core.so.5: no version information available (required by ./libqsqlmysql.so) ./libqsqlmysql.so: /usr/lib/x86_64-linux-gnu/libQt5Core.so.5: no version information available (required by ./libqsqlmysql.so) ./libqsqlmysql.so: /usr/lib/x86_64-linux-gnu/libQt5Core.so.5: no version information available (required by ./libqsqlmysql.so) linux-vdso.so.1 => (0x00007ffd21f90000) libmysqlclient.so.20 => /usr/lib/x86_64-linux-gnu/libmysqlclient.so.20 (0x00007fa3fe87c000) libQt5Sql.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Sql.so.5 (0x00007fa3fe63d000) libQt5Core.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 (0x00007fa3fdf96000) libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007fa3fdc92000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fa3fd8cd000) libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007fa3fd6c8000) libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007fa3fd4aa000) libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fa3fd1a4000) libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007fa3fcf8d000) libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007fa3fcd74000) libicui18n.so.52 => /usr/lib/x86_64-linux-gnu/libicui18n.so.52 (0x00007fa3fc96d000) libicuuc.so.52 => /usr/lib/x86_64-linux-gnu/libicuuc.so.52 (0x00007fa3fc5f3000) libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007fa3fc2eb000) librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007fa3fc0e3000) /lib64/ld-linux-x86-64.so.2 (0x0000562224202000) libicudata.so.52 => /usr/lib/x86_64-linux-gnu/libicudata.so.52 (0x00007fa3fa875000) libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007fa3fa637000) mbnoimivm@ubuntu:~/files/libs/plugins/sqldrivers$
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IMPORTANT:
Although this distro works fine on the original PC but I get this error byldd
:mbnoimi@mbnoimi-laptop ~/HPC/SyncAccountsManager/deb/files/libs/plugins/sqldrivers $ ldd libqsqlmysql.so ./libqsqlmysql.so: /usr/lib/x86_64-linux-gnu/libQt5Sql.so.5: version `Qt_5_PRIVATE_API' not found (required by ./libqsqlmysql.so) ./libqsqlmysql.so: /usr/lib/x86_64-linux-gnu/libQt5Sql.so.5: version `Qt_5' not found (required by ./libqsqlmysql.so) ./libqsqlmysql.so: /usr/lib/x86_64-linux-gnu/libQt5Core.so.5: version `Qt_5.7' not found (required by ./libqsqlmysql.so) ./libqsqlmysql.so: /usr/lib/x86_64-linux-gnu/libQt5Core.so.5: version `Qt_5_PRIVATE_API' not found (required by ./libqsqlmysql.so) ./libqsqlmysql.so: /usr/lib/x86_64-linux-gnu/libQt5Core.so.5: version `Qt_5' not found (required by ./libqsqlmysql.so) linux-vdso.so.1 => (0x00007ffe9f9fd000) libmysqlclient.so.20 => /usr/lib/x86_64-linux-gnu/libmysqlclient.so.20 (0x00007f8bd5f9b000) libQt5Sql.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Sql.so.5 (0x00007f8bd5f59000) libQt5Core.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 (0x00007f8bd5a82000) libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f8bd5700000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f8bd5337000) libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f8bd511c000) libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f8bd4f18000) libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f8bd4cfb000) libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f8bd49f1000) libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f8bd47db000) libicui18n.so.55 => /usr/lib/x86_64-linux-gnu/libicui18n.so.55 (0x00007f8bd4379000) libicuuc.so.55 => /usr/lib/x86_64-linux-gnu/libicuuc.so.55 (0x00007f8bd3fe4000) libpcre16.so.3 => /usr/lib/x86_64-linux-gnu/libpcre16.so.3 (0x00007f8bd3d7e000) libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f8bd3a6d000) librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f8bd3864000) /lib64/ld-linux-x86-64.so.2 (0x0000563fd9f32000) libicudata.so.55 => /usr/lib/x86_64-linux-gnu/libicudata.so.55 (0x00007f8bd1dad000) libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f8bd1b3c000) mbnoimi@mbnoimi-laptop ~/HPC/SyncAccountsManager/deb/files/libs/plugins/sqldrivers $
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@mbnoimi
How did any of this have anything to do withstrip
or.deb
packages?Here: http://doc.qt.io/qt-5/linux-deployment.html#creating-the-application-package
You haven't followed the required directory structure and you're executing the application from a directory different fromqt.conf
's location.Warning: On Linux, this function will try to get the path from the /proc file system. If that fails, it assumes that argv[0] contains the absolute file name of the executable. The function also assumes that the current directory has not been changed by the application.
From here. I'd start by fixing up the shell script. You don't escape the file name of the script but instead quote the whole commands, this doesn't make much sense. Try something like this:
#!/bin/sh # Don't spawn children shells unnecessarily by using ` dir=$(dirname $(readlink -f "$0")) # The following might happen to be pretty important cd $dir'/bin' # Execute from the current shell's context and no need to export if you don't spawn a new shell process app=$dir'/bin/SyncAccountsManagermyapp' LD_LIBRARY_PATH=$dir'/libs:'$LD_LIBRARY_PATH QT_QPA_FONTDIR=$dir'/fonts' $app "$@"
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@kshegunov I did exactly as you suggested although I didn't notice any problem in the old
appname.sh
file. Any way your suggestion gave me exactly same error!
May you please take a look into https://github.com/mbnoimi/sql-sync-manager/releases/tag/0.12 -
@kshegunov said in Unable to deploy Qt app under Linux:
@mbnoimi
How did any of this have anything to do withstrip
or.deb
packages?Here: http://doc.qt.io/qt-5/linux-deployment.html#creating-the-application-package
You haven't followed the required directory structure and you're executing the application from a directory different fromqt.conf
's location.Warning: On Linux, this function will try to get the path from the /proc file system. If that fails, it assumes that argv[0] contains the absolute file name of the executable. The function also assumes that the current directory has not been changed by the application.
From here. I'd start by fixing up the shell script. You don't escape the file name of the script but instead quote the whole commands, this doesn't make much sense. Try something like this:
#!/bin/sh # Don't spawn children shells unnecessarily by using ` dir=$(dirname $(readlink -f "$0")) # The following might happen to be pretty important cd $dir'/bin' # Execute from the current shell's context and no need to export if you don't spawn a new shell process app=$dir'/bin/SyncAccountsManagermyapp' LD_LIBRARY_PATH=$dir'/libs:'$LD_LIBRARY_PATH QT_QPA_FONTDIR=$dir'/fonts' $app "$@"
His problem is definitely deeper than the start script. As we've had him do it direct on the command line with the same results.
Some of the other comments on the start script you made I don't understand. For instance the only difference in $() and backtick in a bash script is looks. Under the covers they both do the same thing. I go back and forth on which I use, they act the exact same though and neither starts an extra shell compared to the first. The newer syntax is $() because they look better but backtick was not deprecated or anything.
The other thing is you mention has to do with escaping. If
dir = /a path with spaces/mydir
then the script would fail. The original script suffers from the same non-escaping though. Just not sure what your comment meant. The "$@" is a bug though, the \ shouldn't be there.Anyway back on to the problem at hand. I'm betting you might have a bad mysql lib. I would remove Qt from the equation and test a binary linked against mysql directly. See if it works. If it does I may have another idea for you, if not then fix your MySQL and you should be all set. ;)
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@ambershark said in Unable to deploy Qt app under Linux:
Anyway back on to the problem at hand. I'm betting you might have a bad mysql lib. I would remove Qt from the equation and test a binary linked against mysql directly. See if it works. If it does I may have another idea for you, if not then fix your MySQL and you should be all set. ;)
I built recent MySQL library against Qt (from Oracle PPA) for that I made my distro using *.deb becuase it asks the user for the following depends (Debreate project file SyncAccountsManager.dbp)
Depends: libmysqlclient20 (>=5.7.11), libstdc++6 (>=4.8.4), libgcc1 (>=1:3.0), libc6 (>=2.14)
I'm not sure if this affect on the distro. Another thing I'm using recent GCC because I use some code written in recent C++ version:
mbnoimi@mbnoimi-laptop ~ $ gcc --version gcc (Ubuntu 5.4.0-6ubuntu1~16.04.4) 5.4.0 20160609 Copyright (C) 2015 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. mbnoimi@mbnoimi-laptop ~ $
Using the above
gcc
I built Qt MySQL Plugin but on my machine everything fine and I'm able to connect to MySQL without any problem. -
Guys, may I ask you for a tiny test:
Could you please build this release then upload the binaries for me?
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Yea that sounds like your problem then. You used a different mysql and didn't distribute your custom one to the target system. And you should NOT do this as that would violate the license of mysql.
I'm betting Qt is looking for a mysql version that isn't there or isn't working properly. Hence the "no driver" error message.
Welcome to the wonderful world of making linux binaries. It is painful. It takes a lot of time and effort to solve all these problems. It sounds like you should have a good jumping off point to figure out where you went wrong with mysql though.
You can try making sure the mysql stuff on the target machine is the same as on your machine. Use
ldd
liberally in trying to find what binaries are failing to load. And finally you can try something likestrace
to see what operations are running when it fails. OH and don'tstrip
your binaries before distribution and try running the application throughgdb
. The call stack may give you insight as to why the mysql on the target machine is not good enough.One last idea, make sure you linked against the same bit size as the target machine. I.e. if you linked 64-bit and the target is 32-bit it would not work and have driver issues.
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@ambershark said in Unable to deploy Qt app under Linux:
Some of the other comments on the start script you made I don't understand. For instance the only difference in $() and backtick in a bash script is looks. Under the covers they both do the same thing. I go back and forth on which I use, they act the exact same though and neither starts an extra shell compared to the first. The newer syntax is $() because they look better but backtick was not deprecated or anything.
The other thing is you mention has to do with escaping. If dir = /a path with spaces/mydir then the script would fail. The original script suffers from the same non-escaping though. Just not sure what your comment meant. The "$@" is a bug though, the \ shouldn't be there.
You're most certainly correct. One should take my scripting "skills" with a grain of salt. What I still insist on, however, is that the application is executed from a folder that is different from the one that
qt.conf
resides in. This can (and possibly does) break the way the plugins are resolved (i.e. the.so
locations). If you follow the documentation page on deployment you'd see that the example puts everything (app, conf file) in the root folder and the plugin directory is under that too. That's why I also referenced the warning in the docs. -
@kshegunov Oh I see what you were saying. I got caught up on the scripting. ;)
The qt.conf is in the directory containing the executable though. So I still don't understand. It is supposed to be in
bin
with the executable.I read that link just in case I was using qt.conf wrong all these years and I didn't see anything to say it would have a problem if launched from outside the containing directory. I may have missed it though.
When you launch the application like
/path/to/my/app
and your working directory is/home/user
the binary would still get theapplicationDirPath()
as/path/to/my
and that is where it would look for qt.conf. So as far as I can tell you don't need tocd bin
before launching the app. I mean it doesn't hurt to do it, but I don't think it hurts not to do it either. :) -
Your fix_executable.sh script is bad. Here is the output from the build:
g++ -c -pipe -O2 -std=gnu++11 -Wall -W -D_REENTRANT -fPIC -DQT_NO_DEBUG -DQT_SQL_LIB -DQT_CORE_LIB -I. -I/usr/local/Qt/include -I/usr/local/Qt/include/QtSql -I/usr/local/Qt/include/QtCore -Itmp-lin64 -I/usr/local/Qt/mkspecs/linux-g++ -o tmp-lin64/main.o src/main.cpp g++ -c -pipe -O2 -std=gnu++11 -Wall -W -D_REENTRANT -fPIC -DQT_NO_DEBUG -DQT_SQL_LIB -DQT_CORE_LIB -I. -I/usr/local/Qt/include -I/usr/local/Qt/include/QtSql -I/usr/local/Qt/include/QtCore -Itmp-lin64 -I/usr/local/Qt/mkspecs/linux-g++ -o tmp-lin64/connectdb.o src/connectdb.cpp src/main.cpp: In function ‘int main(int, char**)’: src/main.cpp:10:16: warning: unused variable ‘dataServer’ [-Wunused-variable] ConnectDB *dataServer = new ConnectDB("QMYSQL", ^~~~~~~~~~ g++ -Wl,-O1 -Wl,-rpath,/usr/local/Qt/lib -o bin/SyncAccountsManager tmp-lin64/main.o tmp-lin64/connectdb.o -L/usr/local/Qt/lib -lQt5Sql -lQt5Core -lpthread /home/mike/tmp/sql-sync-manager-0.12/deb/fix_executable.sh SyncAccountsManager /usr/local/Qt /home/mike/tmp/sql-sync-manager-0.12/bin /home/mike/tmp/sql-sync-manager-0.12 /home/mike/tmp/sql-sync-manager-0.12/deb/fix_executable.sh: line 13: cd: /home/mike/tmp/sql-sync-manager-0.12/deb/files: No such file or directory mkdir: cannot create directory ‘bin’: File exists cp: cannot create regular file '/home/mike/tmp/sql-sync-manager-0.12/deb/files/bin/SyncAccountsManager': No such file or directory chmod: cannot access '/home/mike/tmp/sql-sync-manager-0.12/deb/files/bin/SyncAccountsManager': No such file or directory cp: cannot create regular file '/home/mike/tmp/sql-sync-manager-0.12/deb/files/SyncAccountsManager.sh': No such file or directory chmod: cannot access '/home/mike/tmp/sql-sync-manager-0.12/deb/files/SyncAccountsManager.sh': No such file or directory cp: cannot create regular file '/home/mike/tmp/sql-sync-manager-0.12/deb/files/bin/qt.conf': No such file or directory cp: target '/home/mike/tmp/sql-sync-manager-0.12/deb/files/libs' is not a directory cp: cannot create directory '/home/mike/tmp/sql-sync-manager-0.12/deb/files/libs': No such file or directory make: *** [Makefile:204: bin/SyncAccountsManager] Error 1
The fix is to make sure
deb/files
exists. It doesn't in your source package. Maybe add mkdir to your script or add it to the source dist.Anyway, it's built, I have the same issue with unavailable driver though. But I don't have mysql installed on this machine.
QSqlDatabase: QMYSQL driver not loaded QSqlDatabase: available drivers: QSQLITE QMYSQL QMYSQL3 QPSQL QPSQL7 Unable to connect! ^C
Where would you like me to send the binaries?
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@ambershark said in Unable to deploy Qt app under Linux:
So as far as I can tell you don't need to cd bin before launching the app.
You don't, that was a dead end long shot on my part.
@mbnoimi , I get only "Unable to connect!" no missing drivers but I haven't copied your binaries for Qt and plugins I'm using my distro's (which happens to be debian) own set.
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Then yours is working. If you don't get the driver issue your build worked correctly. It can't connect because you don't have the database it is looking for.