URL:
<https://savannah.gnu.org/bugs/?59154>
Summary: Multiline environment variables handled poorly
Project: make
Submitted by: dankegel
Submitted on: Mon 21 Sep 2020 02:58:39 PM UTC
Severity: 3 - Normal
Item Group: Bug
Status: None
Privacy: Public
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
Component Version: 4.2.1
Operating System: Any
Fixed Release: None
Triage Status: None
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Details:
I accidentally used a multiline envrionment variable thusly:
$ export PUB="$(base64 < ~/.ssh/id_rsa.pub)"
$ cat Makefile
foo:
echo PUB is "$(PUB)"
This worked fine on mac where base64 defaults to not wrapping
there.
But on Linux where base64 defaults to wrapping,
this explored multiline variable values.
With gnu make, it fails with
/bin/sh: 1: Syntax error: unterminated quoted string
With bsd make, it succeeds.
The shell is happy to handle multiline environment variables.
Given that, IMHO, Makefiles that contain properly quoted shell references to
an environment variable ought to continue working even if that environment
variable happens to contain a multiline value. One other implementation gets
it right, so it seems reasonable to enhance gnu make to handle this case as
well.
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