Merge branch 'PHP-7.1' into PHP-7.2

Author: nikic

NEWS

@@ -20,6 +20,8 @@ PHP                                                                        NEWS
     (Daniel Ciochiu)
   . Fixed bug #75074 (php-process crash when is_file() is used with strings
     longer 260 chars). (Anatol)
+  . Fixed bug #69727 (Remove timestamps from build to make it reproducible).
+    (jelle van der Waa)
 
 - CLI server:
   . Fixed bug #73830 (Directory does not exist). (Anatol)

configure.ac

@@ -1268,7 +1268,8 @@ fi
 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $PHP_LDFLAGS"
 EXTRA_LDFLAGS_PROGRAM="$EXTRA_LDFLAGS_PROGRAM $PHP_LDFLAGS"
 
-PHP_BUILD_DATE=`date '+%Y-%m-%d'`
+# SOURCE_DATE_EPOCH for reproducible builds https://reproducible-builds.org/specs/source-date-epoch/
+PHP_BUILD_DATE=`date --date="@${SOURCE_DATE_EPOCH:-$(date +%s)}" +%Y-%m-%d`
 AC_DEFINE_UNQUOTED(PHP_BUILD_DATE,"$PHP_BUILD_DATE",[PHP build date])
 
 PHP_UNAME=`uname -a | xargs`