Follow-up Comment #1, bug #65533 (group make): Since I don't have any idea what the "nwchem" project is or how its makefiles work and you haven't provided any short examples, I can't say for sure.
However, it's almost 100% sure that the problem is that the project's makefiles use a lot of $(shell ...) functions, with recursive variable assignment; e.g. things like: FOO = $(shell some script here) along with either forcing all variables to be exported: .EXPORT_ALL_VARIABLES: or, just exporting directly a lot of variables that contain shell commands, like: export FOO = $(shell some script here) This has always been very inefficient because this shell script is invoked every time the variable is expanded, instead of only once when the variable is assigned. But, starting in GNU Make 4.4 this potentially became much more inefficient due to this change: https://git.savannah.gnu.org/cgit/make.git/tree/NEWS?h=4.4#n73 To fix this, you should ensure that your makefiles adhere to at least one of these rules: * Always use simple assignment (FOO := $(shell ...)) when using the $(shell ...) function unless there's a reason that this can't work. * Avoid setting .EXPORT_ALL_VARIABLES: special target and instead explicitly export only the variables you need. _______________________________________________________ Reply to this item at: <https://savannah.gnu.org/bugs/?65533> _______________________________________________ Message sent via Savannah https://savannah.gnu.org/
