Darwin / Mac OS X

Through DirectIO from coresystems GmbH we now support Darwin/Mac OS X.
DirectIO is available at http://www.coresystems.de/en/directio

Corresponding to flashrom svn r399 and coreboot v2 svn r3905.

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Signed-off-by: Peter Stuge <peter@stuge.se>
Acked-by: Peter Stuge <peter@stuge.se>
diff --git a/Makefile b/Makefile
index a0c195b..86f91d4 100644
--- a/Makefile
+++ b/Makefile
@@ -18,6 +18,10 @@
 ifneq ($(OS_ARCH), SunOS)
 STRIP_ARGS = -s
 endif
+ifeq ($(OS_ARCH), Darwin)
+CFLAGS += -I/usr/local/include
+LDFLAGS += -framework IOKit -framework DirectIO -L/usr/local/lib
+endif
 ifeq ($(OS_ARCH), FreeBSD)
 CFLAGS += -I/usr/local/include
 LDFLAGS += -L/usr/local/lib