From f012b73e78b294d829e3ec008463aa55e271bf23 Mon Sep 17 00:00:00 2001 From: Jean-Marc Lasgouttes Date: Wed, 11 May 2016 17:09:34 +0200 Subject: [PATCH] Do not use 'u' flag for ar The Reproducible Builds effort (https://wiki.debian.org/ReproducibleBuilds) in Debian (at least) means that 'ar' is built in deterministic mode as default: all timestamps are set to 0. This is not compatible with the use of the 'u' flag, and therefore ARFLAGS has to be changed from 'cru' to 'cr'. This gets rid of the harmless but annoying warning ar: `u' modifier ignored since `D' is the default (see `U') (cherry picked from commit 987fc1d15d017c192a566fc922e3967d9d280668) --- configure.ac | 3 +++ status.22x | 2 ++ 2 files changed, 5 insertions(+) diff --git a/configure.ac b/configure.ac index 5edced6bfc..615653fca6 100644 --- a/configure.ac +++ b/configure.ac @@ -74,6 +74,9 @@ AM_PATH_PYTHON # Tools for creating libraries (note that we do not use libtool) m4_ifdef([AM_PROG_AR], [AM_PROG_AR]) dnl AM_PROG_AR requires automake 1.12 AC_PROG_RANLIB +dnl Recent debian/ubuntu (at least) have built 'ar' so that deterministic mode is the default. +dnl This means that it does not make sense to use the 'u' flag (default ARFLAGS is 'cru'). +AC_SUBST([ARFLAGS], [cr]) ### Check for a C++ compiler dnl We have to do weird tricks so that autoconf does not touch CXXFLAGS even diff --git a/status.22x b/status.22x index 7739e6e59f..61898c91d7 100644 --- a/status.22x +++ b/status.22x @@ -141,3 +141,5 @@ What's new - Building against Qt < 4.7 no longer fails. - Fix monolithic builds with autotools on Mac OS X. + +- Avoid 'ar' warning with recent binutils versions.