From 400f2ee42372afae21d3241f0adcb8b5c28a1e6e Mon Sep 17 00:00:00 2001
From: Fabio Utzig <utzig@utzig.org>
Date: Tue, 10 Nov 2015 16:56:57 +0000
Subject: [AVR] Optimize out unused sections

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@8464 35acf78f-673a-0410-8e92-d51de3d6d3f4
---
 demos/AVR/NIL-ARDUINOUNO/Makefile | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'demos/AVR/NIL-ARDUINOUNO/Makefile')

diff --git a/demos/AVR/NIL-ARDUINOUNO/Makefile b/demos/AVR/NIL-ARDUINOUNO/Makefile
index 17068c06c..2d2917075 100644
--- a/demos/AVR/NIL-ARDUINOUNO/Makefile
+++ b/demos/AVR/NIL-ARDUINOUNO/Makefile
@@ -151,6 +151,8 @@ CFLAGS += -Wa,-adhlns=$(<:%.c=$(OBJDIR)/%.lst)
 CFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))
 CFLAGS += $(CSTANDARD)
 #CFLAGS += -mrelax
+CFLAGS += -fdata-sections
+CFLAGS += -ffunction-sections
 
 #---------------- Compiler Options C++ ----------------
 #  -g*:          generate debugging information
@@ -177,6 +179,8 @@ CFLAGS += -Wundef
 CPPFLAGS += -Wa,-adhlns=$(<:%.cpp=$(OBJDIR)/%.lst)
 CPPFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))
 #CPPFLAGS += $(CSTANDARD)
+CPPFLAGS += -fdata-sections
+CPPFLAGS += -ffunction-sections
 
 #---------------- Assembler Options ----------------
 #  -Wa,...:   tell GCC to pass this to the assembler.
@@ -236,7 +240,7 @@ EXTMEMOPTS =
 #  -Wl,...:     tell GCC to pass this to linker.
 #    -Map:      create map file
 #    --cref:    add cross reference to  map file
-LDFLAGS = -Wl,-Map=$(TARGET).map,--cref
+LDFLAGS = -Wl,-Map=$(TARGET).map,--cref,--gc-sections
 LDFLAGS += $(EXTMEMOPTS)
 LDFLAGS += $(patsubst %,-L%,$(EXTRALIBDIRS))
 LDFLAGS += $(PRINTF_LIB) $(SCANF_LIB) $(MATH_LIB)
-- 
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