From: Matthias Maier <tamiko@43-1.org>
Date: Sun, 28 May 2017 05:52:36 +0000 (-0500)
Subject: CMake: Bugfix: run get_latest_tag only if git is recent enough
X-Git-Tag: v9.0.0-rc1~1569^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7f7d73f1945e5fb4e1852a2ffc5facddbf9579a3;p=dealii.git

CMake: Bugfix: run get_latest_tag only if git is recent enough

Fixes #4420
---

diff --git a/cmake/scripts/get_closest_tag.sh b/cmake/scripts/get_closest_tag.sh
index 5166c9448c..803880e515 100755
--- a/cmake/scripts/get_closest_tag.sh
+++ b/cmake/scripts/get_closest_tag.sh
@@ -5,6 +5,11 @@
 #   - with shortest (positive) distance of the common ancestor to HEAD
 #
 
+if ! git --version | grep -q "git version 2"; then
+  # This script requires version 2 or newer
+  exit 1
+fi
+
 head="$(git rev-parse HEAD)"
 
 tags="$(git tag --sort=-creatordate)"
diff --git a/cmake/scripts/get_latest_tag.sh b/cmake/scripts/get_latest_tag.sh
index c29ace9920..ae880e8b86 100755
--- a/cmake/scripts/get_latest_tag.sh
+++ b/cmake/scripts/get_latest_tag.sh
@@ -4,6 +4,11 @@
 # current HEAD
 #
 
+if ! git --version | grep -q "git version 2"; then
+  # This script requires version 2 or newer
+  exit 1
+fi
+
 head="$(git rev-parse HEAD)"
 
 tags="$(git tag --sort=-creatordate)"