This patch is applied to squeezelite Makefile to add override
directive for CFLAGS and LDFLAGS assignment.
This enables adding flags to CFLAGS and LDFLAGS in Makefile.

Signed-off-by: Hiroshi Kawashima <kei-k@ca2.so-net.ne.jp>

diff -ruN a/Makefile b/Makefile
--- a/Makefile	2015-02-01 23:56:21.000000000 +0900
+++ b/Makefile	2015-09-29 20:06:52.268069187 +0900
@@ -1,4 +1,6 @@
 # Cross compile support - create a Makefile which defines these three variables and then includes this Makefile...
+override CFLAGS += $(OPTS)
+override LDFLAGS += -lasound -lpthread -lm -lrt
 CFLAGS  ?= -Wall -fPIC -O2 $(OPTS)
 LDFLAGS ?= -lasound -lpthread -lm -lrt
 EXECUTABLE ?= squeezelite
@@ -52,20 +54,20 @@
 
 # add optional link options
 ifneq (,$(findstring $(OPT_LINKALL), $(CFLAGS)))
-	LDFLAGS += $(LINKALL)
+	override LDFLAGS += $(LINKALL)
 ifneq (,$(findstring $(OPT_FF), $(CFLAGS)))
-	LDFLAGS += $(LINKALL_FF)
+	override LDFLAGS += $(LINKALL_FF)
 endif
 ifneq (,$(findstring $(OPT_RESAMPLE), $(CFLAGS)))
-	LDFLAGS += $(LINKALL_RESAMPLE)
+	override LDFLAGS += $(LINKALL_RESAMPLE)
 endif
 ifneq (,$(findstring $(OPT_IR), $(CFLAGS)))
-	LDFLAGS += $(LINKALL_IR)
+	override LDFLAGS += $(LINKALL_IR)
 endif
 else
 # if not LINKALL and linux add LINK_LINUX
 ifeq ($(UNAME), Linux)
-	LDFLAGS += $(LINK_LINUX)
+	override LDFLAGS += $(LINK_LINUX)
 endif
 endif