With the changes I've made to the latest interface versions I have managed to run the Linux version of fasm in OpenBSD. Here are the steps you have to do (assuming you have downloaded and unpacked the fasm for Linux).

1) Enable linux emulation. This will work only if your kernel supports this, but since the generic OpenBSD kernel includes this option, executing this command should be enough:

For more details look here.

2) Mark the executable as Linux one, in OpenBSD you do it with this command:


And that's all - you should be able to run the fasm executable now.

That's Great this can also be done in freebsd with brandelf
but fasm can't ouput bsd elf so the executable should also be passed to brandelf.
why can't u add a format for bsd for e.g.
format elf_freebsd executable
Really fasm proves that portablility is not a C thing

See the new Unix/libc package in Download section.

i know i just found it
but u mean that fasm/libc version will output elf object that can be linked with the libc ?

fasm just keeps expanding

I have installed OpenBSD 3.6 recently for AMD64..will try this later.

OK, i've encountered a problem on the amd64 with fasm.
The fasm.o assembles, but it crashes when i run it.

i tried the sysctl kern.emul.linux=1 & it doesn't exist in the GENERIC kernel or /etc/sysctl.conf file anywhere.

i was gonna modify the fasm code just to get it running, but maybe there is better way to sort this out.

As fasm itself is 32-bit code, so it needs to be linked with 32-bit variant of libc - this may be the problem on 64-bit systems. I don't have one, so I had no chance to try it yet.