URL: <https://savannah.gnu.org/bugs/?63040>
Summary: autoconf-2.69 and 2.71 fail to build after $(shell ...) environment handlign change Project: make Submitter: slyfox Submitted: Fri 09 Sep 2022 10:35:02 AM UTC Severity: 3 - Normal Item Group: None Status: None Privacy: Public Assigned to: None Open/Closed: Open Discussion Lock: Any Component Version: None Operating System: None Fixed Release: None Triage Status: None _______________________________________________________ Follow-up Comments: ------------------------------------------------------- Date: Fri 09 Sep 2022 10:35:02 AM UTC By: Sergei Trofimovich <slyfox> Tried to use `make` from today's git (commit 7d484017077089ac2642b89da8984ca46a07323d [SV 63016] Don't fail exporting to $(shell ...)) and observed build failure on autoconf: build flags: -j16 -l16 SHELL=bash bash: line 1: env: command not found make all-am bash: line 1: make: command not found make: *** [Makefile:928: all] Error 127 The build failure happens because (I think) autoconf uses the following trick: cfg.mk:export PATH = $(shell echo "`pwd`/tests:$$PATH") Comparing behaviour from `make` a few months ago: $ make --version GNU Make 4.3.90.20220619 $ printf 'export PATH = $(shell echo $$PWD:$$PATH)'"\n"'all:; echo $$PATH' | make -f - echo $PATH /tmp:/run/current-system/sw/bin Path is prepended to existing one, ok. And the today's one: $ ./make --version GNU Make 4.3.90.20220909 $ printf 'export PATH = $(shell echo $$PWD:$$PATH)'"\n"'all:; echo $$PATH' | ./make -f - echo $PATH make: sh: No such file or directory make: sh: No such file or directory make: *** [/tmp/GmYdo0my:2: all] Error 127 If we use `:=` then it works as expected: $ printf 'export PATH := $(shell echo $$PWD:$$PATH)'"\n"'all:; echo $$PATH' | ./make -f - echo $PATH /tmp:/run/current-system/sw/bin In theory it should be easy to adapt `autoconf`s build system. Filing a bug to make sure it's an intended change and not an unexpected regression. _______________________________________________________ Reply to this item at: <https://savannah.gnu.org/bugs/?63040> _______________________________________________ Message sent via Savannah https://savannah.gnu.org/