[bug #64746] Exponential Runtime in make 4.4.1 when export is used

Follow-up Comment #3, bug #64746 (project make): Many have asked for a new "optional simple assignment" variant. I'm not opposed to it. Another option that will work with most currently available versions of GNU make, although it looks somewhat scary, is described here: https://make.mad-scienti

[bug #64746] Exponential Runtime in make 4.4.1 when export is used

Follow-up Comment #2, bug #64746 (project make): That explanation was really helpful. I discovered the difference between recursively expanded variables and simple expanded variables only after posting this issue, but I was still confused why recursive expanded variables would cause this behavior.

[bug #64746] Exponential Runtime in make 4.4.1 when export is used

Follow-up Comment #1, bug #64746 (project make): VAR_1 is a recursively expanded variable. When make defines this variable, the value is set to string '$(shell echo 1)'. No subshell is spawned at this time. Each time make expands this variable, make spawns a shell and has the shell execute 'echo 1

[bug #64746] Exponential Runtime in make 4.4.1 when export is used

URL: Summary: Exponential Runtime in make 4.4.1 when export is used Group: make Submitter: tback Submitted: Wed 04 Oct 2023 09:31:42 PM UTC Severity: 3 - Normal