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digistump-sam/system/libsam/build_gcc/gcc.mk

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+#
+#  Copyright (c) 2011 Arduino.  All right reserved.
+#
+#  This library is free software; you can redistribute it and/or
+#  modify it under the terms of the GNU Lesser General Public
+#  License as published by the Free Software Foundation; either
+#  version 2.1 of the License, or (at your option) any later version.
+#
+#  This library is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+#  See the GNU Lesser General Public License for more details.
+#
+#  You should have received a copy of the GNU Lesser General Public
+#  License along with this library; if not, write to the Free Software
+#  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#
+
+# Tool suffix when cross-compiling
+CROSS_COMPILE = $(ARM_GCC_TOOLCHAIN)/arm-none-eabi-
+
+# Compilation tools
+AR = $(CROSS_COMPILE)ar
+CC = $(CROSS_COMPILE)gcc
+AS = $(CROSS_COMPILE)as
+NM = $(CROSS_COMPILE)nm
+ifeq ($(OS),Windows_NT)
+RM=cs-rm -Rf
+#RM=del /s /f
+else
+RM=rm -Rf
+endif
+
+SEP=/
+
+# ---------------------------------------------------------------------------------------
+# C Flags
+
+CFLAGS += -Wall -Wchar-subscripts -Wcomment -Wformat=2 -Wimplicit-int
+CFLAGS += -Werror-implicit-function-declaration -Wmain -Wparentheses
+CFLAGS += -Wsequence-point -Wreturn-type -Wswitch -Wtrigraphs -Wunused
+CFLAGS += -Wuninitialized -Wunknown-pragmas -Wfloat-equal -Wundef
+CFLAGS += -Wshadow -Wpointer-arith -Wbad-function-cast -Wwrite-strings
+CFLAGS += -Wsign-compare -Waggregate-return -Wstrict-prototypes
+CFLAGS += -Wmissing-prototypes -Wmissing-declarations
+CFLAGS += -Wformat -Wmissing-format-attribute -Wno-deprecated-declarations
+CFLAGS += -Wpacked -Wredundant-decls -Wnested-externs -Winline -Wlong-long
+CFLAGS += -Wunreachable-code
+CFLAGS += -Wcast-align
+#CFLAGS += -Wmissing-noreturn
+#CFLAGS += -Wconversion
+
+# To reduce application size use only integer printf function.
+CFLAGS += -Dprintf=iprintf
+
+CFLAGS += --param max-inline-insns-single=500 -mcpu=cortex-m3 -mthumb -mlong-calls -ffunction-sections -fdata-sections -std=c99
+CFLAGS += $(OPTIMIZATION) $(INCLUDES) -D$(CHIP)
+
+
+# ---------------------------------------------------------------------------------------
+# ASM Flags
+
+ASFLAGS = -mcpu=cortex-m3 -mthumb -Wall -a -g $(INCLUDES)