From 457a9c99bf157da2dcd75136d65587e6869418a4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Toke=20H=C3=B8iland-J=C3=B8rgensen?= <toke@redhat.com>
Date: Mon, 4 Oct 2021 13:43:22 +0200
Subject: [PATCH] configure: check clang version
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Check clang version on configure and bail if it's too old.

Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
---
 configure | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/configure b/configure
index 4564156..936bfaa 100755
--- a/configure
+++ b/configure
@@ -13,6 +13,8 @@ trap 'status=$?; rm -rf $TMPDIR; rm -f $CONFIG; exit $status' EXIT HUP INT QUIT
 
 check_toolchain()
 {
+    local clang_version
+
     : ${PKG_CONFIG:=pkg-config}
     : ${CC=gcc}
     : ${CLANG=clang}
@@ -25,6 +27,13 @@ check_toolchain()
         fi;
     done
 
+    clang_version=$($CLANG --version | sed -n '/clang version/ s/clang version // p')
+    if [ "${clang_version//\.[0-9\.]*/}" -lt "11" ]; then
+        echo "ERROR: Need clang version >= 11, found $clang_version"
+        exit 1
+    fi
+    echo "clang: $clang_version"
+
     echo "PKG_CONFIG:=${PKG_CONFIG}" >>$CONFIG
     echo "CC:=${CC}" >>$CONFIG
     echo "CLANG:=${CLANG}" >>$CONFIG