https://bugs.gentoo.org/show_bug.cgi?id=428494

should be obsolete with >=dev-util/pkgconf-0.8.4

--- warzone2100-3.1.0/configure.ac
+++ warzone2100-3.1.0/configure.ac
@@ -89,7 +89,6 @@
 
 # Check for pkg-config
 PKG_PROG_PKG_CONFIG
-AC_PROG_VERSION_CHECK([pkg-config], [0.9])
 
 AC_MSG_CHECKING([for backend])
 AC_ARG_WITH([backend],