Import buildroot 2016.02.01

firmware/buildroot/package/dtc/0002-extra-cflags.patch

@@ -0,0 +1,32 @@
+Makefile: append the CFLAGS to existing ones
+
+Allow the user to pass custom CFLAGS (eg. optimisation flags).
+
+Do not use EXTRA_CFLAGS, append to existing CFLAGS with +=  (Arnout)
+
+Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
+Cc: Arnout Vandecappelle <arnout@mind.be>
+
+---
+Patch not sent upstream.
+
+Although not specific to buildroot, I am not sure this is the best
+way to handle user-supplied CFLAGS.
+
+diff --git a/Makefile b/Makefile
+index 962f94eba661..bf6b317158cf 100644
+--- a/Makefile
++++ b/Makefile
+@@ -16,9 +16,10 @@ LOCAL_VERSION =
+ CONFIG_LOCALVERSION =
+ 
+ CPPFLAGS = -I libfdt -I .
+-WARNINGS = -Werror -Wall -Wpointer-arith -Wcast-qual -Wnested-externs \
++WARNINGS = -Wall -Wpointer-arith -Wcast-qual -Wnested-externs \
+ 	-Wstrict-prototypes -Wmissing-prototypes -Wredundant-decls -Wshadow
+-CFLAGS = -g -Os -fPIC -Werror $(WARNINGS)
++CFLAGS ?= -g -Os
++CFLAGS += -fPIC $(WARNINGS)
+ 
+ BISON = bison
+ LEX = flex