diff -Nru libunwind-1.2.1/configure.ac libunwind-1.2.1.mod/configure.ac
--- libunwind-1.2.1/configure.ac	2017-06-15 23:31:19.000000000 +0200
+++ libunwind-1.2.1.mod/configure.ac	2018-04-28 20:54:28.010880234 +0200
@@ -1,6 +1,6 @@
 define(pkg_major, 1)
-define(pkg_minor, 2.1)
-define(pkg_extra, )
+define(pkg_minor, 2)
+define(pkg_extra, .1)
 define(pkg_maintainer, libunwind-devel@nongnu.org)
 define(mkvers, $1.$2$3)
 dnl Process this file with autoconf to produce a configure script.