3. Kernel

The NetBSD kernel does not recognize yet the ABI id 4, so you'll need to enable execution of noteless ELF objects.

options EXEC_ELF_NOTELESS

Unfortunately, that's not enough as the kernel wrongly recognizes the executables as GNU/Linux binaries and tries to run them under the Linux kernel emulation. Needless to say, this results in extremely weird behavior, e.g, mmap returning 0.

There are several possible solutions to this problem:

• Disable Linux kernel emulation option

  That's what we did. Besides, you don't want to run binary only software anyway, don't you?

  #options COMPAT_LINUX

• Disable GCC signature check

  In /usr/src/sys/compat/linux/arch/i386/linux_exec.h remove the definition of LINUX_GCC_SIGNATURE. We didn't do that, but we suspect it would have worked.

• Teach the NetBSD kernel

  Add support for the new ABI ids to NetBSD. Look at /usr/src/sys/kern/exec_conf.c to see how it's done.

• Wait for someone else to do it.

  We'll do it ourselves, when there aren't any more important tasks, like getting the thing to work in the first place.