Why do I get this error: /system/bin/sh: ./mksquashfs: not executable: magic 7F45?

Question

As I could not get mksquashfs tool for android. I compiled it for arm using cross compilation and got it built, toolchain is same for kernel as well mksquashfs.

I pushed mksquashfs to /data/ partition of target.

#: cd /data/
#: mkdir xyz
#: ./mksquashfs xyz xyz.sqsh

Error message is:

   /system/bin/sh: ./mksquashfs: not executable: magic 7F45

Please let know how to get a working mksquashfs for android, if I am missing any cross compile toolchain etc.

Answer 1

Magic number 7F45 specifies the Executable and Linkable Format (ELF) file type, a format that is not executable on ARM processors.

Reason could be either improper cross compilation or either using wrong toolchain.

Using correct toolchain should fix this problem