> .ONESHELL ensures each Make recipe is ran as one single shell session, rather than one new shell per line. This both - in my opinion - is more intuitive, and

> .ONESHELL ensures each Make recipe is ran as one single shell session, rather than one new shell per line. This both - in my opinion - is more intuitive, and it lets you do things like loops, variable assignments and so on in bash. You can do things like loops and variable assignments, you just have to keep it on one line. You can put that one line on multiple lines using newline escaping by ending a line with \ You could argue that making it clumsy to do those things enforces that makefile scripts be simpler, while still providing enough of an escape hatch should it be necessary. But probably ONESHELL performs better. The default sounds like a lot of wasted repeated fork/execs.