Merging upstream version 2:4.20.2+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/examples/winexe/wscript b/examples/winexe/wscript
index 6b311b1..c4f13b8 100644
--- a/examples/winexe/wscript
+++ b/examples/winexe/wscript
@@ -1,4 +1,6 @@
 #!/usr/bin/env python
+import os
+
 
 def configure(conf):
     AR32 = ['i386', 'i586', 'i686']
@@ -27,5 +29,24 @@ def configure(conf):
             conf.DEFINE('HAVE_WINEXE_CC_WIN64', 1);
             break
 
+    source_date_epoch = os.environ.get('SOURCE_DATE_EPOCH')
+    if source_date_epoch is None:
+        # We use the version to make up the timestamp that will be
+        # embedded in winexe.exe, to keep the build reproducible.
+        #
+        # This is less evil than it sounds. According to Raymond Chen in
+        # https://devblogs.microsoft.com/oldnewthing/20180103-00/?p=97705
+        # since Windows 10 the timestamp has been randomised.
+        #
+        # The purpose of the timestamp in Windows PE files seems to be
+        # to make spotting ABI changes in DLLs quicker, for which a
+        # random number is just as good as a real time. The timestamp
+        # in .exe files is not used.
+        import samba_version
+        v = samba_version.load_version(env=conf.env)
+        version = (v.MAJOR << 16) | (v.MINOR << 8) | v.RELEASE
+        source_date_epoch = str(version)
+
+    conf.env.SOURCE_DATE_EPOCH = source_date_epoch
     conf.DEFINE("WINEXE_LDFLAGS",
                 "-s -Wall -Wl,-Bstatic -Wl,-Bdynamic -luserenv")