From 7d754783580240612195ea3e71bd49a02f5cd680 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ond=C5=99ej=20Sur=C3=BD?= <ondrej@sury.org>
Date: Tue, 28 Jul 2015 09:19:13 +0200
Subject: [PATCH] Convert the BUILD stamp to AC_ARG_WITH argument, so we can
 make the build reproducible

---
 configure.ac | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index f5f84304b..97ed115a8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3,7 +3,6 @@
 
 AC_PREREQ([2.56])
 AC_INIT([libjpeg-turbo], [1.4.80])
-BUILD=`date +%Y%m%d`
 
 AM_INIT_AUTOMAKE([-Wall foreign dist-bzip2])
 AC_PREFIX_DEFAULT(/opt/libjpeg-turbo)
@@ -22,6 +21,10 @@ AC_PROG_INSTALL
 AC_PROG_LIBTOOL
 AC_PROG_LN_S
 
+AC_ARG_WITH([build-date], [Use custom build string to enable reproducible builds (default: YYMMDD)],
+  [BUILD="$with_build_date"],
+  [BUILD=`date +%Y%m%d`])
+
 # When the prefix is /opt/libjpeg-turbo, we assume that an "official" binary is
 # being created, and thus we install things into specific locations.