#
#  Copyright (C) 2014-2018 Amlogic, Inc. All rights reserved.
#
#  All information contained herein is Amlogic confidential.
#
#  This software is provided to you pursuant to Software License Agreement
#  (SLA) with Amlogic Inc ("Amlogic"). This software may be used
#  only in accordance with the terms of this agreement.
#
#  Redistribution and use in source and binary forms, with or without
#  modification is strictly prohibited without prior written permission from
#  Amlogic.
#
#  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.
#

#******************************************************************************
# The compiler to be used.
#
#******************************************************************************
ifndef COMPILER
COMPILER=gcc
endif


#******************************************************************************
#
# The debugger to be used.
#
#******************************************************************************
ifndef DEBUGGER
DEBUGGER=gdb
endif

#******************************************************************************
#
# Definitions for using GCC.
#
#******************************************************************************
ifeq (${COMPILER}, gcc)

#
# The command for calling the compiler.
#
#ifeq ($(ARCH_CPU), RISC_V_N205)
CC=$(CROSS_COMPILE_PATH)riscv-none-embed-gcc
CPP=$(CROSS_COMPILE_PATH)riscv-none-embed-g++

AFLAGS+=-march=rv32imc -mabi=ilp32 -mcmodel=medany \
	--specs=nano.specs --specs=nosys.specs -ffunction-sections \
	-fdata-sections -fno-common -fgnu89-inline

WARNINGS=-Werror -Wall -Wextra -Wshadow -Wpointer-arith -Wbad-function-cast -Wsign-compare \
	-Waggregate-return -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wunused
CFLAGS+= -g -march=rv32imc -mabi=ilp32 -mcmodel=medany -O2 \
	--specs=nano.specs --specs=nosys.specs -ffunction-sections \
	-fdata-sections -fno-common -fgnu89-inline

CFLAGS+=$(WARNINGS)

AR=$(CROSS_COMPILE_PATH)riscv-none-embed-ar
LD=$(CROSS_COMPILE_PATH)riscv-none-embed-ld
OBJCOPY=$(CROSS_COMPILE_PATH)riscv-none-embed-objcopy
NM=$(CROSS_COMPILE_PATH)riscv-none-embed-nm
OBJDUMP=$(CROSS_COMPILE_PATH)riscv-none-embed-objdump
#endif
endif


#******************************************************************************
#
# Tell the compiler to include debugging information if the DEBUG environment
# variable is set.
#
#******************************************************************************
ifdef DEBUG
CFLAGS += -g
endif

ifdef ENABLE_STACKTRACE
CFLAGS += -DENABLE_STACKTRACE=1
endif

GET_DATE:=$(shell date +%F)
GET_TIME:=$(shell date +%H:%M:%S)
COMMIT_ID:=$(word 2, $(shell git log -1 2>/dev/null | head -n 1))
BRANCH:=$(word 2, $(shell git branch 2>/dev/null | grep "\*"))
ifeq ("${COMMIT_ID}", "")
COMMIT_ID:=
BRANCH:=
endif

CFLAGS += -D VERSION="\"${BRANCH} ${COMMIT_ID} ${GET_TIME} ${GET_DATE}\""

CFLAGS += -D SOC_${SOC}

#******************************************************************************
#
# The rule for building the object file from each C source file.
#
#******************************************************************************
${COMPILER}/%.o: %.c
	@if [ 'x${VERBOSE}' = x ];                               \
	 then                                                    \
	     echo "  CC    ${<}";                                \
	 else                                                    \
	     echo ${CC} ${CFLAGS} -D${COMPILER} -o ${@} -c ${<}; \
	 fi
	@${CC} ${CFLAGS} -D${COMPILER} -MD -o ${@} -c ${<}

#******************************************************************************
#
# The rule for building the object file from each assembly source file.
#
#******************************************************************************
${COMPILER}/%.o: %.S
	@if [ 'x${VERBOSE}' = x ];                               \
	 then                                                    \
	     echo "  CC    ${<}";                                \
	 else                                                    \
	     echo ${CC} ${AFLAGS} -D${COMPILER} -o ${@} -c ${<}; \
	 fi
	 @${CC} ${AFLAGS} -D${COMPILER} -MD -o ${@} -c ${<}