Makefile: Add CPPFLAGS handling

Some developers may need to pass specific flags
to compiler, usually due to different include/
directory and etc. So add well known CPPFLAGS
here.

Example:

$ CPPFLAGS="-I/home/include" make

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>

diff --git a/tools/kvm/Makefile b/tools/kvm/Makefile
index 0bc48915fa569fb9271b3730770c21ecf02d18e1..bd1488a4375f00d77d2e2f54f6a1ea62532c4a53 100644 (file)
--- a/tools/kvm/Makefile
+++ b/tools/kvm/Makefile
@@ -5,7 +5,7 @@ OBJS    += kvm.o
 OBJS   += main.o
 OBJS   += util.o
 
-CFLAGS += -Iinclude
+CFLAGS += $(CPPFLAGS) -Iinclude
 
 WARNINGS += -Wall
 WARNINGS += -Wcast-align