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[sr #110657] Autoconf configure script considers absence of usable grep
From: |
Paul Eggert |
Subject: |
[sr #110657] Autoconf configure script considers absence of usable grep a fatal error, although it only uses egrep thereafter |
Date: |
Tue, 17 May 2022 17:59:31 -0400 (EDT) |
Update of sr #110657 (project autoconf):
Status: Need Info => Wont Do
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Follow-up Comment #3:
OK, I think I see what's happening now; you have an egrep that's good enough,
but you also want to test for header files and Autoconf's header-file tests
insist on robust 'grep' because they prefer to use 'grep -E', as egrep was
removed from POSIX a long time ago.
For this sort of thing, I suggest either (a) installing and using a better
'grep' like GNU grep, or (b) running something like './configure
ac_cv_path_GREP=/usr/bin/grep ac_cv_path_egrep=/usr/bin/egrep' in the hopes
that your system grep and egrep are good enough for 'configure'. (a) should be
much better in the long run.
I doubt whether we should modify Autoconf to work around this problem, as it
should occur only on nonstandard platforms that are no longer supported even
by their own suppliers.
_______________________________________________________
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- [sr #110657] Autoconf configure script considers absence of usable grep a fatal error, although it only uses egrep thereafter, Alain Knaff, 2022/05/15
- [sr #110657] Autoconf configure script considers absence of usable grep a fatal error, although it only uses egrep thereafter, Paul Eggert, 2022/05/17
- [sr #110657] Autoconf configure script considers absence of usable grep a fatal error, although it only uses egrep thereafter, Alain Knaff, 2022/05/17
- [sr #110657] Autoconf configure script considers absence of usable grep a fatal error, although it only uses egrep thereafter,
Paul Eggert <=
- [sr #110657] Autoconf configure script considers absence of usable grep a fatal error, although it only uses egrep thereafter, Zack Weinberg, 2022/05/17
- [sr #110657] Autoconf configure script considers absence of usable grep a fatal error, although it only uses egrep thereafter, Paul Eggert, 2022/05/17
- Re: [sr #110657] Autoconf configure script considers absence of usable grep a fatal error, although it only uses egrep thereafter, Perry Hutchison, 2022/05/18