Mysql can't connect on MacBook

[Eternus]

sorry nothing I mean how can I fix this problem ? I think add qt_debug_plugins... this isn't solution ...

[SGaist]

I never said it would be the solution, the goal is to gather information about why the plugin is not loading in order to fix it. And be careful, the name of the variable is all in upper case.

[Eternus]

@SGaist
if I start debugging I have same this :
23:08:46: Debugging starts
2020-08-21 23:08:51.949814+0200 Test[946:23566] QPixmap::scaled: Pixmap is a null pixmap
2020-08-21 23:08:53.840401+0200 Test[946:23566] QSqlDatabase: QMYSQL driver not loaded
2020-08-21 23:08:53.840464+0200 Test[946:23566] QSqlDatabase: available drivers: QSQLITE QODBC QODBC3 QPSQL QPSQL7

2020-08-21 23:09:50.887121+0200 Test[946:23566] QSqlDatabasePrivate::addDatabase: duplicate connection name 'qt_sql_default_connection', old connection removed.

[SGaist]

The application output shows one thing: you are misusing the QSqlDatabase class. It also does not show the plugin loading debug data.

Did you add the QT_DEBUG_PLUGINS variable in Qt Creator like I suggested ? If so, did you set it to 1 ?

[Eternus]

@SGaist sorry iam beginner noob where I need add QT_DEBUG PUGINS where ?

[mrjj]

@Eternus
Hi

[Eternus]

@mrjj thanks <3
@SGaist

and this is says me ..

13:04:44: Starting /Users/macbook/Documents/Projekty_programovanie/QT_APPS/build-Test-Desktop_Qt_5_15_0_clang_64bit-Debug/Test.app/Contents/MacOS/Test ...
QFactoryLoader::QFactoryLoader() checking directory path "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/platforms" ...
QFactoryLoader::QFactoryLoader() looking at "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/platforms/libqcocoa.dylib"
Found metadata in lib /Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/platforms/libqcocoa.dylib, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"cocoa"
]
},
"archreq": 0,
"className": "QCocoaIntegrationPlugin",
"debug": false,
"version": 331520
}

Got keys from plugin meta data ("cocoa")
QFactoryLoader::QFactoryLoader() looking at "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/platforms/libqminimal.dylib"
Found metadata in lib /Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/platforms/libqminimal.dylib, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"minimal"
]
},
"archreq": 0,
"className": "QMinimalIntegrationPlugin",
"debug": false,
"version": 331520
}

Got keys from plugin meta data ("minimal")
QFactoryLoader::QFactoryLoader() looking at "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/platforms/libqoffscreen.dylib"
Found metadata in lib /Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/platforms/libqoffscreen.dylib, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"offscreen"
]
},
"archreq": 0,
"className": "QOffscreenIntegrationPlugin",
"debug": false,
"version": 331520
}

Got keys from plugin meta data ("offscreen")
QFactoryLoader::QFactoryLoader() looking at "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/platforms/libqwebgl.dylib"
Found metadata in lib /Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/platforms/libqwebgl.dylib, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"webgl"
]
},
"archreq": 0,
"className": "QWebGLIntegrationPlugin",
"debug": false,
"version": 331520
}

Got keys from plugin meta data ("webgl")
QFactoryLoader::QFactoryLoader() checking directory path "/Users/macbook/Documents/Projekty_programovanie/QT_APPS/build-Test-Desktop_Qt_5_15_0_clang_64bit-Debug/Test.app/Contents/MacOS/platforms" ...
loaded library "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/platforms/libqcocoa.dylib"
QFactoryLoader::QFactoryLoader() checking directory path "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/platformthemes" ...
QFactoryLoader::QFactoryLoader() looking at "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/platformthemes/libqxdgdesktopportal.dylib"
Found metadata in lib /Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/platformthemes/libqxdgdesktopportal.dylib, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformThemeFactoryInterface.5.1",
"MetaData": {
"Keys": [
"xdgdesktopportal",
"flatpak",
"snap"
]
},
"archreq": 0,
"className": "QXdgDesktopPortalThemePlugin",
"debug": false,
"version": 331520
}

Got keys from plugin meta data ("xdgdesktopportal", "flatpak", "snap")
QFactoryLoader::QFactoryLoader() checking directory path "/Users/macbook/Documents/Projekty_programovanie/QT_APPS/build-Test-Desktop_Qt_5_15_0_clang_64bit-Debug/Test.app/Contents/MacOS/platformthemes" ...
QFactoryLoader::QFactoryLoader() checking directory path "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/styles" ...
QFactoryLoader::QFactoryLoader() looking at "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/styles/libqmacstyle.dylib"
Found metadata in lib /Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/styles/libqmacstyle.dylib, metadata=
{
"IID": "org.qt-project.Qt.QStyleFactoryInterface",
"MetaData": {
"Keys": [
"macintosh"
]
},
"archreq": 0,
"className": "QMacStylePlugin",
"debug": false,
"version": 331520
}

Got keys from plugin meta data ("macintosh")
QFactoryLoader::QFactoryLoader() checking directory path "/Users/macbook/Documents/Projekty_programovanie/QT_APPS/build-Test-Desktop_Qt_5_15_0_clang_64bit-Debug/Test.app/Contents/MacOS/styles" ...
loaded library "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/styles/libqmacstyle.dylib"
QFactoryLoader::QFactoryLoader() checking directory path "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats" ...
QFactoryLoader::QFactoryLoader() looking at "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqgif.dylib"
Found metadata in lib /Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqgif.dylib, metadata=
{
"IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
"MetaData": {
"Keys": [
"gif"
],
"MimeTypes": [
"image/gif"
]
},
"archreq": 0,
"className": "QGifPlugin",
"debug": false,
"version": 331520
}

Got keys from plugin meta data ("gif")
QFactoryLoader::QFactoryLoader() looking at "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqicns.dylib"
Found metadata in lib /Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqicns.dylib, metadata=
{
"IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
"MetaData": {
"Keys": [
"icns"
],
"MimeTypes": [
"image/x-icns"
]
},
"archreq": 0,
"className": "QICNSPlugin",
"debug": false,
"version": 331520
}

Got keys from plugin meta data ("icns")
QFactoryLoader::QFactoryLoader() looking at "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqico.dylib"
Found metadata in lib /Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqico.dylib, metadata=
{
"IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
"MetaData": {
"Keys": [
"ico",
"cur"
],
"MimeTypes": [
"image/vnd.microsoft.icon",
"image/vnd.microsoft.icon"
]
},
"archreq": 0,
"className": "QICOPlugin",
"debug": false,
"version": 331520
}

Got keys from plugin meta data ("ico", "cur")
QFactoryLoader::QFactoryLoader() looking at "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqjpeg.dylib"
Found metadata in lib /Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqjpeg.dylib, metadata=
{
"IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
"MetaData": {
"Keys": [
"jpg",
"jpeg"
],
"MimeTypes": [
"image/jpeg",
"image/jpeg"
]
},
"archreq": 0,
"className": "QJpegPlugin",
"debug": false,
"version": 331520
}

Got keys from plugin meta data ("jpg", "jpeg")
QFactoryLoader::QFactoryLoader() looking at "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqmacheif.dylib"
Found metadata in lib /Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqmacheif.dylib, metadata=
{
"IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
"MetaData": {
"Keys": [
"heic",
"heif"
],
"MimeTypes": [
"image/heic",
"image/heif"
]
},
"archreq": 0,
"className": "QMacHeifPlugin",
"debug": false,
"version": 331520
}

Got keys from plugin meta data ("heic", "heif")
QFactoryLoader::QFactoryLoader() looking at "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqmacjp2.dylib"
Found metadata in lib /Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqmacjp2.dylib, metadata=
{
"IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
"MetaData": {
"Keys": [
"jp2"
],
"MimeTypes": [
"image/jp2",
"image/jpx",
"image/jpm",
"video/mj2"
]
},
"archreq": 0,
"className": "QMacJp2Plugin",
"debug": false,
"version": 331520
}

Got keys from plugin meta data ("jp2")
QFactoryLoader::QFactoryLoader() looking at "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqsvg.dylib"
Found metadata in lib /Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqsvg.dylib, metadata=
{
"IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
"MetaData": {
"Keys": [
"svg",
"svgz"
],
"MimeTypes": [
"image/svg+xml",
"image/svg+xml-compressed"
]
},
"archreq": 0,
"className": "QSvgPlugin",
"debug": false,
"version": 331520
}

Got keys from plugin meta data ("svg", "svgz")
QFactoryLoader::QFactoryLoader() looking at "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqtga.dylib"
Found metadata in lib /Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqtga.dylib, metadata=
{
"IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
"MetaData": {
"Keys": [
"tga"
],
"MimeTypes": [
"image/x-tga"
]
},
"archreq": 0,
"className": "QTgaPlugin",
"debug": false,
"version": 331520
}

Got keys from plugin meta data ("tga")
QFactoryLoader::QFactoryLoader() looking at "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqtiff.dylib"
Found metadata in lib /Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqtiff.dylib, metadata=
{
"IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
"MetaData": {
"Keys": [
"tiff",
"tif"
],
"MimeTypes": [
"image/tiff",
"image/tiff"
]
},
"archreq": 0,
"className": "QTiffPlugin",
"debug": false,
"version": 331520
}

Got keys from plugin meta data ("tiff", "tif")
QFactoryLoader::QFactoryLoader() looking at "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqwbmp.dylib"
Found metadata in lib /Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqwbmp.dylib, metadata=
{
"IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
"MetaData": {
"Keys": [
"wbmp"
],
"MimeTypes": [
"image/vnd.wap.wbmp"
]
},
"archreq": 0,
"className": "QWbmpPlugin",
"debug": false,
"version": 331520
}

Got keys from plugin meta data ("wbmp")
QFactoryLoader::QFactoryLoader() looking at "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqwebp.dylib"
Found metadata in lib /Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqwebp.dylib, metadata=
{
"IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
"MetaData": {
"Keys": [
"webp"
],
"MimeTypes": [
"image/webp"
]
},
"archreq": 0,
"className": "QWebpPlugin",
"debug": false,
"version": 331520
}

Got keys from plugin meta data ("webp")
QFactoryLoader::QFactoryLoader() checking directory path "/Users/macbook/Documents/Projekty_programovanie/QT_APPS/build-Test-Desktop_Qt_5_15_0_clang_64bit-Debug/Test.app/Contents/MacOS/imageformats" ...
loaded library "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqgif.dylib"
loaded library "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqicns.dylib"
loaded library "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqico.dylib"
loaded library "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqjpeg.dylib"
loaded library "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqmacheif.dylib"
loaded library "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqmacjp2.dylib"
loaded library "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqsvg.dylib"
loaded library "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqtga.dylib"
loaded library "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqtiff.dylib"
loaded library "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqwbmp.dylib"
loaded library "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/imageformats/libqwebp.dylib"
QFactoryLoader::QFactoryLoader() checking directory path "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/iconengines" ...
QFactoryLoader::QFactoryLoader() looking at "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/iconengines/libqsvgicon.dylib"
Found metadata in lib /Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/iconengines/libqsvgicon.dylib, metadata=
{
"IID": "org.qt-project.Qt.QIconEngineFactoryInterface",
"MetaData": {
"Keys": [
"svg",
"svgz",
"svg.gz"
]
},
"archreq": 0,
"className": "QSvgIconPlugin",
"debug": false,
"version": 331520
}

Got keys from plugin meta data ("svg", "svgz", "svg.gz")
QFactoryLoader::QFactoryLoader() checking directory path "/Users/macbook/Documents/Projekty_programovanie/QT_APPS/build-Test-Desktop_Qt_5_15_0_clang_64bit-Debug/Test.app/Contents/MacOS/iconengines" ...
QPixmap::scaled: Pixmap is a null pixmap
QFactoryLoader::QFactoryLoader() checking directory path "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/accessible" ...
QFactoryLoader::QFactoryLoader() checking directory path "/Users/macbook/Documents/Projekty_programovanie/QT_APPS/build-Test-Desktop_Qt_5_15_0_clang_64bit-Debug/Test.app/Contents/MacOS/accessible" ...
QFactoryLoader::QFactoryLoader() checking directory path "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/sqldrivers" ...
QFactoryLoader::QFactoryLoader() looking at "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/sqldrivers/libqsqlite.dylib"
Found metadata in lib /Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/sqldrivers/libqsqlite.dylib, metadata=
{
"IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
"MetaData": {
"Keys": [
"QSQLITE"
]
},
"archreq": 0,
"className": "QSQLiteDriverPlugin",
"debug": false,
"version": 331520
}

Got keys from plugin meta data ("QSQLITE")
QFactoryLoader::QFactoryLoader() looking at "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/sqldrivers/libqsqlodbc.dylib"
Found metadata in lib /Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/sqldrivers/libqsqlodbc.dylib, metadata=
{
"IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
"MetaData": {
"Keys": [
"QODBC3",
"QODBC"
]
},
"archreq": 0,
"className": "QODBCDriverPlugin",
"debug": false,
"version": 331520
}

Got keys from plugin meta data ("QODBC3", "QODBC")
QFactoryLoader::QFactoryLoader() looking at "/Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/sqldrivers/libqsqlpsql.dylib"
Found metadata in lib /Users/macbook/Documents/Qt/5.15.0/clang_64/plugins/sqldrivers/libqsqlpsql.dylib, metadata=
{
"IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
"MetaData": {
"Keys": [
"QPSQL7",
"QPSQL"
]
},
"archreq": 0,
"className": "QPSQLDriverPlugin",
"debug": false,
"version": 331520
}

Got keys from plugin meta data ("QPSQL7", "QPSQL")
QFactoryLoader::QFactoryLoader() checking directory path "/Users/macbook/Documents/Projekty_programovanie/QT_APPS/build-Test-Desktop_Qt_5_15_0_clang_64bit-Debug/Test.app/Contents/MacOS/sqldrivers" ...
QSqlDatabase: QMYSQL driver not loaded
QSqlDatabase: available drivers: QSQLITE QODBC QODBC3 QPSQL QPSQL7

[SGaist]

Due to a change of licence by Oracle, the MySQL prebuilt plugin cannot be provided. You have to build it yourself.

[Eternus]

@SGaist said in Mysql can't connect on MacBook:

Due to a change of licence by Oracle, the MySQL prebuilt plugin cannot be provided. You have to build it yourself.

but how ??? tell me please :(

[SGaist]

Did you even try to read the related Qt's documentation ?

It's explained there.
There are also numerous thread on this forum about that subject.

[Eternus]

@SGaist said in Mysql can't connect on MacBook:

documentation

i try this : https://forum.qt.io/topic/106565/mysql-qt-create-plugin-mysql-for-qt-on-mac

Then, we cd to mysql folder (folder inside sqldrivers) and make plugin through 2 commands
qmake
make install

if i qmake and make install i dont have libsqlmysql.dylib in file sqldrivers i dont know why ..

[SGaist]

And what about following the documentation I linked ?

Are you sure you are using the correct qmake executable ?
Did you check the qmake output ?
Did you check the make output ?

[Eternus]

@SGaist i do this:
https://doc.qt.io/qt-5/sql-driver.html

cd $QTDIR/qtbase/src/plugins/sqldrivers -- i need write full path
qmake -- MYSQL_PREFIX=/usr/local - this working..
i stopped on this step : make sub-mysql

[Christian Ehrlicher]

@Eternus said in Mysql can't connect on MacBook:

this working..

Please remove all generated files (as explained in the documentation) and post the output of this command.

[Eternus]

@Christian-Ehrlicher said in Mysql can't connect on MacBook:

working..

Please remove all generated files (as explained in the documentation) and post the output of this

how ?? i cant find in documentation

[SGaist]

By deleting the files that have been generated in the folder you are in.

[Eternus]

@SGaist have you mean all in sqldrivers ?

[jsulm]

@Eternus In the build directory, $QTDIR/qtbase/src/plugins/sqldrivers in your case.
This is now a good example why it is way better to use out of source builds...

[Eternus]

@jsulm i deleted all files and still have same error
https://ddgobkiprc33d.cloudfront.net/e229edb5-5f7b-4d09-b351-f42b5aa9c97b.png

documentation says me delete config i deleted comfig and its same..

[SGaist]

Look into config.tests to see what is happening.