OpenCV 2.3.1 on i.MX53QSB

[Rooney]

Hello!

Has anybody experience on running OpenCV on the i.MX53QSB?

I'm having troubles during cross-compiling of OpenCV. The following error occurs at about 85%:

Linking CXX executable ../../bin/opencv_traincascade
/home/spiderman/Development/rootfs/lucid/usr/lib/libz.so: could not read symbols: File in wrong format
collect2: ld returned 1 exit status
make[2]: *** [bin/opencv_traincascade] Error 1
make[1]: *** [modules/traincascade/CMakeFiles/opencv_traincascade.dir/all] Error 2
make: *** [all] Error 2

My system configuration:

Host:
# Ubuntu 10.04

# CMake 2.8.1

# Freescale Toolchain (arm-non-linux-gnueabi-)

Target:

# i.MX53QSB

# Ubuntu 10.04 (debootstrap version, not ltib)

What I did...

# Unpacking OpenCV 2.3.1

# Created toolchain file witht the following content:

set( CMAKE_SYSTEM_NAME Linux )
set( CMAKE_SYSTEM_PROCESSOR arm )
set( CMAKE_C_COMPILER /opt/freescale/usr/local/gcc-4.4.4-glibc-2.11.1-multilib-1.0/arm-fsl-linux-gnueabi/bin/arm-none-linux-gnueabi-gcc )
set( CMAKE_CXX_COMPILER /opt/freescale/usr/local/gcc-4.4.4-glibc-2.11.1-multilib-1.0/arm-fsl-linux-gnueabi/bin/arm-none-linux-gnueabi-g++ )
set( CMAKE_FIND_ROOT_PATH /home/spiderman/Development/rootfs/lucid/ )
# Executing cmake-gui OpenCV-2.3.1

# Disabling almost any feature, just to get rid of any problems caused by libs that are not available

# Added -I /home/spiderman/Development/rootfs/lucid/usr/include -L /home/spiderman/Development/rootfs/lucid/usr/lib to OPENCV_EXTRA_C_FLAGS --> path to the libs and include files on my target system

# Configure and generate are successfull

# make FAILS!!!

Any ideas?

[hoanganhngo]

I'm in the same problem with you.Can any one help me?.Thanks!.

[JohannesPetzold]

well, I get the 98% build now, but then it fails with linking rt and pthread library. building it again with flags -lrt and -lpthread it fails at 15% with building zlib. So I think I'm trying to do a native build now, don't want to spend to much time with that problem. If I find a better solution, I'll let you know

[Rooney]

Hello Johannes!

Currently not, but I've to confess I didn't spend any time in the last weeks to solve the problem, as I'm busy to develop my own i.MX53 board at the moment. But nevertheless, sooner or later I need to find a solution for that. I'll post it here.

If you can solve yourself please let us know. Thanks!!!

Regards

Rooney

[JohannesPetzold]

Hi, 

i'm facing the same problem as you with building opencv under ltib. Have you found another good solution than a native build?

[hake]

OpenCV needs MMX code which is only supported by Xscale? Please ensure you disable those ASM code.

for your problem, it seems that your build path link a x86 version, a good choice is to run mx53 with ubuntu and do a native build