[CC += Paul, Sam, help-make@] Hi Brian, Paul, Sam, On Sun, Feb 16, 2025 at 02:48:54PM +0100, Alejandro Colomar wrote: > Bisecting the bug shows it's fault of this commit: > > 0d69e51cd4b8 (2025-02-10; "share/mk/: Use ?= assignments for user-facing variables") > > I suspect there's some variable that we use that exists in a normal > environment? I'll check. Hmmm, at first glance, I don't see anything from the environment that would make this behave differently: $ ( git show 0d69e51cd4b8 \ | grep '^+' \ | grep -v '^++' \ | sed 's/\s*?=.*//' \ | grep -v '$.' \ | tr -d '+'; env \ | sed 's/=.*//'; ) \ | sort \ | uniq -d \ | wc -l; 0 The command above says there are no clashes with my environment. My second guess is that ?= since has the = behavior, which is different from :=, that might be the problem. We'd need a hypothetical ?:=, maybe? Sam, that means that I'll have to revert this change with no short-term replacement. We'll have to live without environment variables for some more time. ?= doesn't work for well here, it seems. I remember GNU make(1) was working on some of that. Paul, how is it going with the idea you suggested some time ago of adding "trigraphs" to GNU make(1)? Have a lovely day! Alex -- <https://www.alejandro-colomar.es/>
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