URL:
<https://savannah.gnu.org/bugs/?58420>
Summary: PATH changes are not applied in $(shell) function
Project: make
Submitted by: srivasta
Submitted on: Wed 20 May 2020 06:21:52 PM CDT
Severity: 3 - Normal
Item Group: Bug
Status: None
Privacy: Public
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
Component Version: 4.3
Operating System: None
Fixed Release: None
Triage Status: None
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Details:
This was reported by a debian user. Please retain the CC to
[email protected] to ensure your responses reach the reporter.
Given the following Makefile:
--- BEGIN ---
PATH := /nonexistent:$(PATH)
default:
@echo "make variable PATH=$(PATH)"
@echo "in target commands, PATH=$$PATH"
@echo "in \$$(shell commands), PATH=$(shell echo "$$PATH")"
--- END ---
'make' generates the output for me:
make variable
PATH=/nonexistent:/home/ben/bin:/usr/lib/ccache:/usr/local/sbin:/usr/sbin:/sbin:/home/ben/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games
in target commands,
PATH=/nonexistent:/home/ben/bin:/usr/lib/ccache:/usr/local/sbin:/usr/sbin:/sbin:/home/ben/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games
in $(shell commands),
PATH=/home/ben/bin:/usr/lib/ccache:/usr/local/sbin:/usr/sbin:/sbin:/home/ben/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games
I can't see any documentation that says the PATH variable is special, so I
think this is a bug. I would guess that make defers evaluating the PATH
variable into the environment, in case it's recursively expanded, but only
re-evaulates it before running target commands.
Ben.
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