On Thu, Jul 17, 2025 at 01:02:21 +0530, Mohan wrote: > is it common to use m4 with gas?
There are not much code written in assembler these days and the little amount that gets written probably can get by with the C preprocessor and or gas own macro facility. Also my impression is that macro-processors are not really in any more (they are kinda... forgotten, I guess). So I don't expect m4 to be in common use either specifically for assembler programming or in general. But I still love m4 :). Tiny, powerful, versatile - comes in handy when you need it. Recently I used it to generate intrinsics for the Potable CLU compiler, e.g.: https://github.com/nbuwe/pclu/blob/default/code/sysasm/Opt/oneof_pfx.m4 > are there examples i can learn from or just general resources for > unix asm programming? Some 30 years ago I've got a QIC tape with a bunch of what we now call "open-source" software on it. Included among other things was MIT Scheme (I don't remember the version, whatever it was in the early 90s). It had quite a bit of m4+asm code. The problem was that the m68k systems we had at the time used one assembler syntax and MIT Scheme was written in another (think Intel vs ATT syntax for x86). But since it was written in m4+asm it was not really that much _source_ code to edit and then m4 took care of the rest and quite soon I was welcomed with "Moriturus te saluto". sendmail.cf was also (in)famously written in m4. Not m4, but both troff and TeX are (custom) macroprocessors. -uwe
