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).

diff --git a/win32utils/Configure b/win32utils/Configure
index 22e425b83a4569472e56f5007ea6ebadb0902320..daad52f047067d0be06e3099cfd3ce60642d476c 100644 (file)
--- 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();