From 65baafa9e6e82293a202c96e832c7779b7216550 Mon Sep 17 00:00:00 2001
From: gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4>
Date: Mon, 25 Aug 2008 14:17:38 +0000
Subject: git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@404
 35acf78f-673a-0410-8e92-d51de3d6d3f4

---
 demos/ARM7-LPC214x-G++/Makefile | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

(limited to 'demos/ARM7-LPC214x-G++/Makefile')

diff --git a/demos/ARM7-LPC214x-G++/Makefile b/demos/ARM7-LPC214x-G++/Makefile
index f54c1ba2d..95d6bfdb8 100644
--- a/demos/ARM7-LPC214x-G++/Makefile
+++ b/demos/ARM7-LPC214x-G++/Makefile
@@ -32,6 +32,9 @@ BIN  = $(CP) -O binary
 
 MCU  = arm7tdmi
 
+# Enable this if you want the linker to remove unused code and data
+LINK_GC = yes
+
 # List all default C defines here, like -D_DEBUG=1
 DDEFS =
 
@@ -129,6 +132,10 @@ WARN = -Wall
 # End of user defines
 ##############################################################################################
 
+ifeq ($(LINK_GC),yes)
+  OPT += -ffunction-sections -fdata-sections
+endif
+
 INCDIR   = $(patsubst %,-I%,$(DINCDIR) $(UINCDIR))
 LIBDIR   = $(patsubst %,-L%,$(DLIBDIR) $(ULIBDIR))
 DEFS     = $(DDEFS) $(UDEFS)
@@ -145,11 +152,15 @@ OBJS	 = $(ASMOBJS) $(ACOBJS) $(TCOBJS) $(ACPPOBJS) $(TCPPOBJS)
 LIBS     = $(DLIBS) $(ULIBS)
 MCFLAGS  = -mcpu=$(MCU)
 
+ODFLAGS  = -x --syms
 ASFLAGS  = $(MCFLAGS) -Wa,-amhls=$(<:.s=.lst) $(ADEFS)
 CFLAGS   = $(MCFLAGS) $(OPT) $(WARN) -Wa,-alms=$(<:.c=.lst) $(DEFS)
 CPPFLAGS = $(MCFLAGS) $(OPT) $(CPPOPT) $(WARN) -Wa,-alms=$(<:.cpp=.lst) $(DEFS)
-LDFLAGS  = $(MCFLAGS) -nostartfiles -T$(LDSCRIPT) -Wl,-Map=$(PROJECT).map,--cref,--no-warn-mismatch $(LIBDIR)
-ODFLAGS  = -x --syms
+ifeq ($(LINK_GC),yes)
+  LDFLAGS = $(MCFLAGS) -nostartfiles -T$(LDSCRIPT) -Wl,-Map=$(PROJECT).map,--cref,--no-warn-mismatch,--gc-sections $(LIBDIR)
+else
+  LDFLAGS = $(MCFLAGS) -nostartfiles -T$(LDSCRIPT) -Wl,-Map=$(PROJECT).map,--cref,--no-warn-mismatch $(LIBDIR)
+endif
 
 # Thumb interwork enabled only if needed because it kills performance.
 ifneq ($(TSRC),)
-- 
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