---- DirectFB-0.9.21/configure.in.orig 2004-12-11 17:13:59.000000000 +0100
-+++ DirectFB-0.9.21/configure.in 2005-01-09 22:37:52.168260232 +0100
-@@ -135,13 +135,6 @@
- AC_CHECK_HEADERS(linux/unistd.h asm/page.h)
+--- DirectFB-1.6.0/configure.in.orig 2012-06-14 18:00:08.000000000 +0200
++++ DirectFB-1.6.0/configure.in 2012-06-17 11:44:33.652503513 +0200
+@@ -184,11 +184,6 @@
+ AC_CHECK_HEADERS(linux/compiler.h linux/unistd.h asm/page.h signal.h)