From 05e13e7cafaff48b5e3bb098114225df89f3e59c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20K=C4=99pie=C5=84?= <michal@isc.org>
Date: Wed, 15 Apr 2020 11:38:40 +0200
Subject: [PATCH] Fix "srcid" on Windows

Windows BIND releases produced by GitLab CI are built from Git
repositories, not from release tarballs, which means the "srcid" file is
not present in the top source directory when MSBuild is invoked.  This
causes the Git commit hash for such builds to be set to "unset_id".
Enable win32utils/Configure to try determining the commit hash for a
build by invoking Git on the build host if the "srcid" file is not
present (which is what its Unix counterpart does).
---
 win32utils/Configure | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/win32utils/Configure b/win32utils/Configure
index 22e425b83a..daad52f047 100644
--- a/win32utils/Configure
+++ b/win32utils/Configure
@@ -2638,6 +2638,13 @@ sub makesrcid {
         close SIN;
     }
 
+    if ($srcid eq "unset_id" and -d "..\\.git") {
+        $data = `git rev-list --max-count=1 HEAD`;
+        if (length($data) > 0) {
+            $srcid = substr($data, 0, 7);
+        }
+    }
+
     # Now set up the output version file
 
     my $ThisDate = scalar localtime();