Why Qt Configure can not find correct MySQL installation on target when cross compiling?

Question

I want to build MySQL driver while cross-compiling Qt5 for Arm(Raspberry Pi).

In order to check MySQL client libraries installation on target we run:

pi@raspberrypi:~ $ mysql_config --version
10.1.38
pi@raspberrypi:~ $ mysql_config --include
-I/usr/include/mysql
pi@raspberrypi:~ $ mysql_config --libs
-L/usr/lib/arm-linux-gnueabihf  -lmariadbclient -lpthread -lz -lm -ldl

And we configure Qt like this:

../configure -opengl es2 -device linux-rpi3-g++ -device-option CROSS_COMPILE=$RPI_TOOLCHAIN -no-use-gold-linker -qt-xcb -xcb -sysroot $RPI_SYSROOT -opensource -confirm-license -nomake examples -nomake tests -release -make libs -prefix /usr/local/qt5pi -sql-mysql -recheck-all

Configure will throw error:

ERROR: Feature 'sql-mysql' was enabled, but the pre-condition 'libs.mysql' failed

Note:

If we look at the config.log it seems Qt Configure looks for MySQL in host machine, not sysroot or target!

[...]
looking for library mysql
Trying source 0 (type mysqlConfig) of library mysql ...
mysql_config not found.
=> source produced no result.
Trying source 1 (type mysqlConfig) of library mysql ...
mysql_config not found.
=> source produced no result.
Trying source 2 (type mysqlConfig) of library mysql ...
mysql_config not found.
=> source produced no result.
Trying source 3 (type mysqlConfig) of library mysql ...
mysql_config not found.
=> source produced no result.
Trying source 4 (type inline) of library mysql ...
None of [libmysqlclient_r.so libmysqlclient_r.a] found in [] and global paths.
=> source produced no result.
Trying source 5 (type inline) of library mysql ...
=> source failed condition 'config.win32'.
Trying source 6 (type inline) of library mysql ...
None of [libmysqlclient.so libmysqlclient.a] found in [] and global paths.
=> source produced no result.
test config.qtbase_sqldrivers.libraries.mysql FAILED
[...]

What do you suggest?

Update Sep 4'19

Seems to be a reported bug:

But still didn't get fixed!, looking for a workaround...

You might have a better chance of getting this answered on raspberrypi.stackexchange.com. — computercarguy, Sep 10 '19 at 16:14
@computercarguy Thanks for the suggestion, but this is mostly a Qt issue — IMAN4K, Sep 11 '19 at 06:41
[QtBug-42284](https://bugreports.qt.io/browse/QTBUG-42284) says that the issue was fixed in Qt 5.12.1, are you testing an older release? — Former contributor, Sep 11 '19 at 07:15

score -1 · Answer 1 · edited Apr 16 '23 at 12:41

-1

After installation, remove "config.cache" and try again.

edited Apr 16 '23 at 12:41

Jeff Schaller

2,352
5
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answered Apr 14 '23 at 03:02

supermilkba

1
1

supermilkba, this does not provide an answer to the question. Once you have sufficient [reputation](/help/whats-reputation) you will be able to [comment on any post](/help/privileges/comment); instead, [provide answers that don't require clarification from the asker](//meta.stackexchange.com/q/214173). – Yunnosch Apr 14 '23 at 06:13
Or maybe phrase this as an explained conditional answer, in order to avoid the impression of asking a clarification question instead of answering (for which a comment should be used instead of an answer, compare https://meta.stackexchange.com/questions/214173/why-do-i-need-50-reputation-to-comment-what-can-i-do-instead ). For example like "If your problem is ... then the solution is to .... because .... ." – Yunnosch Apr 14 '23 at 06:13

Why Qt Configure can not find correct MySQL installation on target when cross compiling?

Note:

Update Sep 4'19

1 Answers1