Can't crosscompile QT5 -> STM32MP157-DK2

me-3

OS on PC: 6.12.73+deb13-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.73-1 (2026-02-17) x86_64
GNU/Linux
OS On Board: Linux buildroot 6.6.78 #2 SMP PREEMPT Thu Mar 12 14:27:12 CET 2026 armv7l GNU/Linux

Hello,

QT5 tries to write files to /usr/bin/ on the Board.

:-1: Fehler: rsync ist mit Rückgabewert 23 fehlgeschlagen.
rsync: [receiver] mkstemp "/usr/bin/.qt-sensor-demo.ByfJDz" failed: Read-only file system (30)
rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1338) [sender=3.4.1]

Root on the Board is read-only.

# mount | grep -E '(^/dev|type (ext4|xfs|btrfs))'
/dev/root on / type squashfs (ro,relatime,errors=continue)
/dev/mmcblk0p10 on /data type ext4 (rw,relatime)

Can I change the paths, where to QT5 writes its files?

Marc

me-3

High SGaist,

I think, that's what I was searching for.
Thank You
Marc

SGaist

Hi and welcome to devnet,

That's not enough details.
What are you building ?
How are you building it ?
Which tools are you using ?
What does trigger that rsync ?

me-3

Hello SGaist,
Building: the famous "Hello" programm
How/Tools:: QT Creator, last Version downloaded and installed with atp... QT5 integrated in buildroot, Connection over SSH with the board, (configured in Creator -> devices), Creator sends files after compiling/building to the board and generates the error messages. (lower part of Creators projekt screen "issues")
rsync: triggered by Creator
Sorry for the missing informations
Marc

SGaist

Did you already saw the embedded Linux deployment part of the Qt Creator documentation ?

me-3

High SGaist,

I think, that's what I was searching for.
Thank You
Marc