From 73ec73ed7fe20ec6427dba63e52534136f3c19bd Mon Sep 17 00:00:00 2001
From: Paul Floyd <pjfloyd@wanadoo.fr>
Date: Sun, 2 Jul 2023 12:59:40 +0200
Subject: [PATCH] FreeBSD: add default to configure.ac FreeBSD 13 versions

Also add comment to README.freebsd about ensuring that
jails set "uname -r" to be something compatible with the
normal RELEASE/STABLE/CURRENT releases.
---
 README.freebsd | 4 ++++
 configure.ac   | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/README.freebsd b/README.freebsd
index 90eefc89b9..d197efcaf3 100644
--- a/README.freebsd
+++ b/README.freebsd
@@ -21,6 +21,10 @@ $ ./configure --prefix=/where/ever
 $ gmake
 $ gmake install
 
+If you are using a jail for building, make sure that it is configured so that
+"uname -r" returns a string that matches the pattern "XX.Y-*" where XX is the
+major version (12, 13, 14 ...) and Y is the minor version (0, 1, 2, 3).
+
 Known Limitations (June 2022)
 
 0. Be aware that if you use a wrapper script and run Valgrind on the wrapper
diff --git a/configure.ac b/configure.ac
index 1d4164a7d8..4dbb1753c7 100755
--- a/configure.ac
+++ b/configure.ac
@@ -444,6 +444,10 @@ case "${host_os}" in
               AC_DEFINE([FREEBSD_VERS], FREEBSD_13_2, [FreeBSD version])
               freebsd_vers=$freebsd_13_2
               ;;
+           *)
+              AC_MSG_RESULT([unsupported (${kernel})])
+              AC_MSG_ERROR([Valgrind works on FreeBSD 10.x to 14.x])
+              ;;
            esac
            ;;
         14.*)
-- 
2.47.2