On Mon, Oct 15, 2012 at 10:41 AM, John Long <codeb...@inbox.lv> wrote: > On Mon, Oct 15, 2012 at 09:48:57AM -0500, Chris Bennett wrote: >> On Mon, Oct 15, 2012 at 09:31:34AM -0500, Chris Bennett wrote: >> > I have added this: >> > >> > section .note.openbsd.ident >> > align 2 >> > dd 8 >> > dd 4 >> > dd 1 >> > db 'OpenBSD',0 >> > dd 0 >> > align 2 >> > >> > But get error: >> > >> > sfhello.asm:1: error: segment name `.note.openbsd.ident' not recognized >> > >> >> This does work fine if I do this: >> add note section then compile like this: >> >> nasm -f elf32 -o sfhello.o sfhello.asm >> ld -m elf_i386_obsd -o sfhello sfhello.o >> ./sfhello >> Hello, world! >> >> Anything wrong with this method? > > No, but it is often easier to let gcc invoke the linker. > > instead of > > ld -m elf_i386_obsd -o sfhello sfhello.o > > you could do > > gcc -o sfhello sfhello.o >
that fails to link because _start would be defined in crt, and passing -nostdlib isn't enough because some pie thing needs atexit. the final command line with -nopie ends up being more complicated than calling ld
