Initial code

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+#******************************************************************************
+#
+# makedefs - Definitions common to all makefiles.
+#
+# Copyright (c) 2005-2012 Texas Instruments Incorporated.  All rights reserved.
+# Software License Agreement
+# 
+#   Redistribution and use in source and binary forms, with or without
+#   modification, are permitted provided that the following conditions
+#   are met:
+# 
+#   Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# 
+#   Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the  
+#   distribution.
+# 
+#   Neither the name of Texas Instruments Incorporated nor the names of
+#   its contributors may be used to endorse or promote products derived
+#   from this software without specific prior written permission.
+# 
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# 
+# This is part of revision 9453 of the Stellaris Firmware Development Package.
+#
+#******************************************************************************
+
+#******************************************************************************
+#
+# Get the operating system name.  If this is Cygwin, the .d files will be
+# munged to convert c: into /cygdrive/c so that "make" will be happy with the
+# auto-generated dependencies.
+#
+#******************************************************************************
+os:=${shell uname -s}
+
+#******************************************************************************
+#
+# The compiler to be used.
+#
+#******************************************************************************
+ifndef COMPILER
+COMPILER=gcc
+endif
+
+#******************************************************************************
+#
+# Definitions for using GCC.
+#
+#******************************************************************************
+ifeq (${COMPILER}, gcc)
+
+#
+# Get the prefix for the tools to use.  Use arm-stellaris-eabi if it exists,
+# otherwise fall back to arm-none-eabi.
+#
+PREFIX=${shell type arm-stellaris-eabi-gcc > /dev/null 2>&1 && \
+		 echo arm-stellaris-eabi || echo arm-none-eabi}
+
+#
+# The command for calling the compiler.
+#
+CC=${PREFIX}-gcc
+
+#
+# The location of the C compiler
+# ARMGCC_ROOT is used by some makefiles that need to know where the compiler
+# is installed.  It is not used further for normal stellarisware apps
+#
+ARMGCC_ROOT:=${shell dirname '${shell sh -c "which ${CC}"}'}/..
+
+#
+# Determine the compiler CPU/FPU options based on the processor variant.
+#
+ifndef VARIANT
+CPU=-mcpu=cortex-m3
+FPU=
+else
+ifeq (${VARIANT}, cm3)
+CPU=-mcpu=cortex-m3
+FPU=
+else
+ifeq (${VARIANT}, cm4f)
+CPU=-mcpu=cortex-m4
+FPU=-mfpu=fpv4-sp-d16 -mfloat-abi=softfp
+else
+$(error Unknown processor variant ${VARIANT}!)
+endif
+endif
+endif
+
+#
+# The flags passed to the assembler.
+#
+AFLAGS=-mthumb \
+	   ${CPU}  \
+	   ${FPU}  \
+	   -MD
+
+#
+# The flags passed to the compiler.
+#
+CFLAGS=-mthumb             \
+	   ${CPU}              \
+	   ${FPU}              \
+	   -Os                 \
+	   -ffunction-sections \
+	   -fdata-sections     \
+	   -MD                 \
+	   -std=c99            \
+	   -Wall               \
+	   -pedantic           \
+	   -DPART_${PART}      \
+	   -c
+
+#
+# The command for calling the library archiver.
+#
+AR=${PREFIX}-ar
+
+#
+# The command for calling the linker.
+#
+LD=${PREFIX}-ld
+
+#
+# The flags passed to the linker.
+#
+LDFLAGS=--gc-sections
+
+#
+# Get the location of libgcc.a from the GCC front-end.
+#
+LIBGCC=${shell ${CC} ${CFLAGS} -print-libgcc-file-name}
+
+#
+# Get the location of libc.a from the GCC front-end.
+#
+LIBC=${shell ${CC} ${CFLAGS} -print-file-name=libc.a}
+
+#
+# Get the location of libm.a from the GCC front-end.
+#
+LIBM=${shell ${CC} ${CFLAGS} -print-file-name=libm.a}
+
+#
+# The command for extracting images from the linked executables.
+#
+OBJCOPY=${PREFIX}-objcopy
+
+#
+# Tell the compiler to include debugging information if the DEBUG environment
+# variable is set.
+#
+ifdef DEBUG
+CFLAGS+=-g -D DEBUG
+endif
+
+#
+# Add the tool specific CFLAGS.
+#
+CFLAGS+=${CFLAGSgcc}
+
+#
+# Add the include file paths to AFLAGS and CFLAGS.
+#
+AFLAGS+=${patsubst %,-I%,${subst :, ,${IPATH}}}
+CFLAGS+=${patsubst %,-I%,${subst :, ,${IPATH}}}
+
+#
+# The rule for building the object file from each C source file.
+#
+${COMPILER}${SUFFIX}/%.o: %.c
+	@if [ 'x${VERBOSE}' = x ];                            \
+	 then                                                 \
+		 echo "  CC    ${<}";                             \
+	 else                                                 \
+		 echo ${CC} ${CFLAGS} -D${COMPILER} -o ${@} ${<}; \
+	 fi
+	@${CC} ${CFLAGS} -D${COMPILER} -o ${@} ${<}
+ifneq ($(findstring CYGWIN, ${os}), )
+	@sed -i -r 's/ ([A-Za-z]):/ \/cygdrive\/\1/g' ${@:.o=.d}
+endif
+
+#
+# The rule for building the object file from each assembly source file.
+#
+${COMPILER}${SUFFIX}/%.o: %.S
+	@if [ 'x${VERBOSE}' = x ];                               \
+	 then                                                    \
+		 echo "  AS    ${<}";                                \
+	 else                                                    \
+		 echo ${CC} ${AFLAGS} -D${COMPILER} -o ${@} -c ${<}; \
+	 fi
+	@${CC} ${AFLAGS} -D${COMPILER} -o ${@} -c ${<}
+ifneq ($(findstring CYGWIN, ${os}), )
+	@sed -i -r 's/ ([A-Za-z]):/ \/cygdrive\/\1/g' ${@:.o=.d}
+endif
+
+#
+# The rule for creating an object library.
+#
+${COMPILER}${SUFFIX}/%.a:
+	@if [ 'x${VERBOSE}' = x ];     \
+	 then                          \
+		 echo "  AR    ${@}";      \
+	 else                          \
+		 echo ${AR} -cr ${@} ${^}; \
+	 fi
+	@${AR} -cr ${@} ${^}
+
+#
+# The rule for linking the application.
+#
+${COMPILER}${SUFFIX}/%.axf:
+	@if [ 'x${SCATTERgcc_${notdir ${@:.axf=}}}' = x ];                    \
+	 then                                                                 \
+		 ldname="${ROOT}/gcc/standalone.ld";                              \
+	 else                                                                 \
+		 ldname="${SCATTERgcc_${notdir ${@:.axf=}}}";                     \
+	 fi;                                                                  \
+	 if [ 'x${VERBOSE}' = x ];                                            \
+	 then                                                                 \
+		 echo "  LD    ${@} ${LNK_SCP}";                                  \
+	 else                                                                 \
+		 echo ${LD} -T $${ldname}                                         \
+			  --entry ${ENTRY_${notdir ${@:.axf=}}}                       \
+			  ${LDFLAGSgcc_${notdir ${@:.axf=}}}                          \
+			  ${LDFLAGS} -o ${@} $(filter %.o %.a, ${^})                  \
+			  '${LIBM}' '${LIBC}' '${LIBGCC}';                            \
+	 fi;                                                                  \
+	${LD} -T $${ldname}                                                   \
+		  --entry ${ENTRY_${notdir ${@:.axf=}}}                           \
+		  ${LDFLAGSgcc_${notdir ${@:.axf=}}}                              \
+		  ${LDFLAGS} -o ${@} $(filter %.o %.a, ${^})                      \
+		  '${LIBM}' '${LIBC}' '${LIBGCC}'
+	@${OBJCOPY} -O binary ${@} ${@:.axf=.bin}
+endif
+