[AVR] Optimize out unused sections

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@8464 35acf78f-673a-0410-8e92-d51de3d6d3f4

1 files changed, 5 insertions, 1 deletions

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)