On 2022-10-28 08:49, Paul Smith wrote:
I don't know what this AS_TMPDIR() macro does; I can't find it in a quick search.
https://www.gnu.org/savannah-checkouts/gnu/autoconf/manual/autoconf-2.71/html_node/Initialization-Macros.html#index-AS_005fTMPDIRLooks like your diagnosis is correct; thanks. I installed the attached patch into the Autoconf manual.
From 3cc9b414aa91f0bf83ae0b48bf4d8fe0aecf71dc Mon Sep 17 00:00:00 2001 From: Paul Eggert <eggert@xxxxxxxxxxx> Date: Fri, 28 Oct 2022 15:19:16 -0700 Subject: [PATCH] Warn about TMPDIR * doc/autoconf.texi (Initialization Macros): Warn about setting TMPDIR, following up on this Paul Smith remark: https://lists.gnu.org/r/autoconf/2022-10/msg00024.html --- doc/autoconf.texi | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/doc/autoconf.texi b/doc/autoconf.texi index b6d4f033..ed337fd6 100644 --- a/doc/autoconf.texi +++ b/doc/autoconf.texi @@ -14610,6 +14610,10 @@ leave the temporary directory behind. Hence it is important to use a @var{prefix} that makes it easier to determine if a leftover temporary directory from an interrupted script is safe to delete. +If you set @code{TMPDIR=$tmp} after invoking this macro, you should +reset @code{TMPDIR} before deleting the created directory, to avoid +breaking commands that rely on @code{$TMPDIR}. + The use of the output variable @samp{$tmp} rather than something in the @samp{as_} namespace is historical; it has the unfortunate consequence that reusing this otherwise common name for any other purpose inside -- 2.37.3
