gcc cross-compile for am335x failes

Andreas Schleicher

Prodigy 60 points

Hi,

I've cross-compiled a simple helloworld for the am335x as described here:

http://processors.wiki.ti.com/index.php/Sitara_Linux_SDK_GCC_Toolchain

using the arm-linux-gnuaebihf-gcc from the TI SDK 7.00

http://downloads.ti.com/sitara_linux/esd/AM335xSDK/latest/index_FDS.html

gcc runs successfully and a "file helloworld" gives me:

helloworld: ELF 32-bit LSB executable, ARM, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.31, BuildID[sha1]=0xed47df8a423cf951efd4b3f23bd846530c33c6, not stripped

when i copy the file on the arm via ssh and execute it, it just gives me a:

-sh: ./helloworld: not found

what am i doing wrong, are the wrong libs linked during compilation?

Thanks a lot

Andreas

over 12 years ago

0 Schuyler Patton over 12 years ago

TI__Mastermind 41510 points

Are the execute permissions set on the helloworld file?

0 Andreas Schleicher over 12 years ago in reply to Schuyler Patton

Prodigy 60 points

yes, the permissions are set.

0 Miroslav Kiradzhiyski XID over 12 years ago

TI__Mastermind 25235 points

Hi Andreas,

Are you sure you are using the root file system that comes with SDK v7? If you are using an older root file system, some libraries, which your binary depends on, may be older version than what the binary was compiled against.

Also check if the program interpreter name from this command's output is available on your system:

arm-linux-gnueabihf-readelf -l./helloworld

Best regards,
Miroslav

0 Andreas Schleicher over 12 years ago in reply to Miroslav Kiradzhiyski XID

Prodigy 60 points

Hi Miroslav,

thank you so far, readelf tells me the requested interpreter is /lib/ld-linux-armhf.so.3, which my system lacks. So i guess i have the wrong rootfs installed (how do i find out which skd i have btw?).

so how do i update/build my rootfs to sdk7?

Kind Regards,

Andreas

0 Miroslav Kiradzhiyski XID over 12 years ago in reply to Andreas Schleicher

TI__Mastermind 25235 points

Well, I guess you downloaded SDK v7 from here: http://software-dl.ti.com/sitara_linux/esd/AM335xSDK/latest/index_FDS.html

When you install/extract it to your host system, there will be a "filesystem" subfolder, which contains a base rootfs and a complete rootfs, both in UBIFS format and a tarball.

If you run the <SDK_dir>/bin/create-sdcard.sh script, it will create a SD card for you.

Best regards,
Miroslav

0 Andreas Schleicher over 12 years ago in reply to Miroslav Kiradzhiyski XID

Prodigy 60 points

Hi Miroslav,

i've created a fresh sdk 7ssd card, which runs fine, but the ethernet fails to connect. When i start the Network Settings script i tells me for eth0: UP BROADCAST RUNNING MULTICAST, and Interrupt:56. What's happening?

Thanks a lot

Andreas

0 Miroslav Kiradzhiyski XID over 12 years ago in reply to Andreas Schleicher

TI__Mastermind 25235 points

Please try:

ifup eth0

Best regards,
Miroslav

0 Andreas Schleicher over 12 years ago in reply to Miroslav Kiradzhiyski XID

Prodigy 60 points

Well, since i can't connect via ssh i don't have a shell..

Kind regards,

Andreas

0 Miroslav Kiradzhiyski XID over 12 years ago in reply to Andreas Schleicher

TI__Mastermind 25235 points

Don't you have a UART debug port with a UART debug cable? I strongly suggest you get one for development purposes. You will be able to access the user space through it.

Another question that comes to mind is - Do you have your ethernet cable plugged in the board when the board is booting or are you plugging the cable after the board boots up? I think, if the cable is present during INIT, the dhcp client automatically sends requests to the DHCP server (if you have one in your network, of course). This should bring up the interface.

Best regards,
Miroslav

0 Andreas Schleicher over 12 years ago in reply to Miroslav Kiradzhiyski XID

Prodigy 60 points

Hi Miroslav,

i've connected through the UART debug port (using minicom / screen on /dev/ttyUSB1), and that works fine for me.

The ethernet doesn't work though, but i won't need it.

Thanks a lot, best regards

Andreas

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gcc cross-compile for am335x failes