Segmentation fault on RPi4 and buildroot

[Mark81]

I cross-compiled Qt5.12 for RPi4 with buildroot.
When I try to execute a simple hello world project I get a segmentation fault crash.

Here some info:

# file foo
foo: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-uClibc.so.0, not stripped

# ldd foo
libatomic.so.1 => /lib//libatomic.so.1 (0x7fb6fd6000)
libQt5Core.so.5 => /usr/lib//libQt5Core.so.5 (0x7fb6b31000)
libstdc++.so.6 => /usr/lib//libstdc++.so.6 (0x7fb69dd000)
libgcc_s.so.1 => /lib//libgcc_s.so.1 (0x7fb69bb000)
libc.so.0 => /lib//libc.so.0 (0x7fb68f4000)
libz.so.1 => /usr/lib//libz.so.1 (0x7fb68d0000)
libpcre2-16.so.0 => /usr/lib//libpcre2-16.so.0 (0x7fb687f000)
ld-uClibc.so.1 => /lib/ld-uClibc.so.0 (0x7fb6fed000)

What should I further check?

[SGaist]

Hi,

Run your application using the de debugger. This should give you more details about what is happening.

[Mark81]

Sorry, I forgot to mention it's the first obvious thing I did. It just showed some disassembled code, even before reach the main entry point.

[Mark81]

The problem was for some reasons Qt5 doesn't like the uClibc system. I had to rebuild with glibc.

[Pablo J. Rogina]

@Mark81 said in Segmentation fault on RPi4 and buildroot:

I cross-compiled Qt5.12 for RPi4 with buildroot

Out of curiosity, did you follow any guide/detailed steps?

[Mark81]

@Pablo-J-Rogina said in Segmentation fault on RPi4 and buildroot:

Out of curiosity, did you follow any guide/detailed steps?

None. I've just configured the environment as well as I can.

[Pablo J. Rogina]

@Mark81 Ok, thanks for the reply.

And may I asked what have you used?

1. RPi4 OS
2. Compiler
3. EGL/GLES libraries (experimental VC4 driver or Broadcomm backend)
4. linux-rasp-pi4-g++

[Mark81]

@Pablo-J-Rogina said in Segmentation fault on RPi4 and buildroot:

@Mark81 Ok, thanks for the reply.

And may I asked what have you used?

Here you find the whole configuration: https://forum.qt.io/topic/111081/nothing-shown-running-qml

[Pablo J. Rogina]

@Mark81 thanks for your reply.

Since I'm not that familiar with Buildroot tool I'll need to check it more closely.