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From: Manoj Srivastava <srivasta@debian.org>
Date: Sat, 16 Jan 2016 12:55:37 -0800
Subject: Fix issues with ar operating in deterministic mode
It looks like the ar program in the binutils package in debian is now
configured with --enable-deterministic-archives. However, when dealing
with archive members, make needs the timestamp of the file in order to
decide to update it or not. With the current deterministic behavior of
ar, the timestamp is always 0. This change in ar introduced a behavior
that is not backward compatible and forces the use of the option U.
make fails to build, failing 7 out of 10 archive tests. Since make seems
to depend on timestamps to handle rebuilds of archives correctly, it
makes sense to always pass on the -U flag, and depend on a version of ar
that supports it.
Should this U option be included in a Makefile, older versions of ar
would reject it and fail.
There is some online discussion:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=798804
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=798913
https://bugzilla.redhat.com/show_bug.cgi?id=1195883
Last-Update: 2023-02-12
---
src/read.c | 2 +-
tests/scripts/targets/POSIX | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
--- a/src/read.c
+++ b/src/read.c
@@ -1911,7 +1911,7 @@
define_variable_cname ("FC", "fort77", o_default, 0);
define_variable_cname ("FFLAGS", "-O1", o_default, 0);
define_variable_cname ("SCCSGETFLAGS", "-s", o_default, 0);
- define_variable_cname ("ARFLAGS", "-rv", o_default, 0);
+ define_variable_cname ("ARFLAGS", "-rvU", o_default, 0);
continue;
}
--- a/tests/scripts/targets/POSIX
+++ b/tests/scripts/targets/POSIX
@@ -70,7 +70,7 @@
'', $out);
# Test the default value of various POSIX-specific variables
-my %POSIX = (AR => 'ar', ARFLAGS => '-rv',
+my %POSIX = (AR => 'ar', ARFLAGS => '-rvU',
YACC => 'yacc', YFLAGS => '',
LEX => 'lex', LFLAGS => '',
LDFLAGS => '',
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