[ptxdist] [PATCH v2 1/2] ptxd_make_vcs_version: add script to determine vcs hash

[Steffen Trumtrar <s.trumtrar@pengutronix.de>]

Add a script to determine a uniquely abbreviated commit object of the
current bsp state. The information is exported to the variable
PTXDIST_VCS_VERSION so it can be used from other scripts and rules.

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
---
changes in v2:
    - use "--tags" in git describe

 scripts/lib/ptxd_make_vcs_version.sh | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 scripts/lib/ptxd_make_vcs_version.sh

diff --git a/scripts/lib/ptxd_make_vcs_version.sh b/scripts/lib/ptxd_make_vcs_version.sh
new file mode 100644
index 000000000000..07856db967b4
--- /dev/null
+++ b/scripts/lib/ptxd_make_vcs_version.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+#
+# Copyright (C) 2020 by Steffen Trumtrar <s.trumtrar@pengutronix.de>
+#
+# For further information about the PTXdist project and license conditions
+# see the README file.
+#
+
+ptxd_make_vcs_version() {
+    PTXDIST_VCS_VERSION="$(echo $(git describe 2>/dev/null || git describe --always --tags))"
+
+    if [ -z "${PTXDIST_VCS_VERSION}" ]; then
+       PTXDIST_BUILD_VERSION_VCS="unknown"
+    fi
+
+    export PTXDIST_VCS_VERSION
+}
+export -f ptxd_make_vcs_version
+
+ptxd_make_vcs_version
-- 
2.29.2


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