Cross Compiling for iMX6 using arm-linux-gnueabi-g++

[danlaks]

I compiled a C++ program on my Ubuntu computer using arm-linux-gnueabi-g++ and copied it over to my device that has an iMX6 (a Gateworks GW5100 board with a yocto build). Unfortunately, I'm getting a "no such file or directory" error when I try to execute the program. I've verified the permissions on the file are correct and that the file copied successfully. I just can't execute it.

Is there any reason arm-linux-gnueabi-g++ is the wrong cross compiler to use for the iMX6? Is there another one I should use instead?

Here is the output of running "file" on the executable:

sw: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=34622f94d6f088b50e31bcd08ecd14f57947fee5, not stripped

Thank you.

[danlaks]

I managed to figure this out and get it to work. It was one of two things, but I'm not sure which one it is.

My program required libusb, which I had previously cross-compiled using arm-linux-gnueabihf-gcc (note the hard float suffix). But I compiled my code using arm-linux-gnueabi-g++ (not hard float). After that, I had the problem I described above. When I went back and recompiled everything with the hf compilers, it worked.

So either 1) both libusb and my code needed to be compiled with the same float-type or 2) the iMX6 requires hard float regardless of anything else. Either way my program works on the iMX6 board now.

[linksrain]

I specifically registered an account to reply to you, and your solution works

[linksrain]

set(CMAKE_C_COMPILER /usr/bin/arm-linux-gnueabihf-gcc)
set(CMAKE_CXX_COMPILER /usr/bin/arm-linux-gnueabihf-g++)


set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

set(CMAKE_PREFIX_PATH "/home//tool/qt-everywhere-src-5.12.9/armqt-5.12.9" CACHE PATH "Path to Qt")
find_package(QT NAMES Qt6 Qt5 REQUIRED COMPONENTS Widgets)
It is noted that both the QT library and other dependent libraries use toolchains with the arm-linux-gnueabihf, depending on whether your device supports it

[b36401]

As libusb required by your code requires hardware floating point library you need to have this library on the filesystem even if your code itself uses software floating point.

Have a great day,
Victor

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