# $Header: Default_Makefile,r60 2006-03-01 12:33:07 ingo $

# Default HPGCC Makefile
# Copyright (c) 2006 The HP-GCC Development Team

#Automatic compiler detection for cygwin/linux

#export CC_TARGET=arm-elf

ifeq ($(CC_TARGET),)
  ifeq ($(SHELL),)
    $(warning Compiler detection does not work on Windows)
    $(warning Assuming CC_TARGET=arm-elf)
    export CC_TARGET=arm-elf
  endif

  ifeq ($(CC_TARGET),)
    ifneq ($(shell which 2>/dev/null arm-linux-gcc),)
      export CC_TARGET=arm-linux
    else
      ifneq ($(shell which 2>/dev/null arm-elf-gcc),)
        export CC_TARGET=arm-elf
      else
        $(error No compiler found. Check PATH or provide a CC_TARGET)
      endif
    endif
  endif
endif

ifndef THUMB
# Generate Thumb instructions & link against Thumb libs
THUMB=1
endif

INCLUDE_PATH=$(HPGCC)/include
LIBS_PATH=$(HPGCC)/lib

# enumerate libs ...
# TODO: Thumb/ARM switch

LIBDECNUMBER=decnumber
LIBFSYSTEM=fsystem
LIBGGL=ggl
LIBHPLIB=hplib
LIBHPG=hpg
LIBGCC=gcc

LIBS= -l$(LIBGGL) -l$(LIBHPLIB) -l$(LIBHPG) -l$(LIBHPLIB) -l$(LIBFSYSTEM) -l$(LIBHPLIB) -l$(LIBDECNUMBER) -l$(LIBHPLIB) -l$(LIBGCC)

ELF2HP= $(HPGCC)/elf2hp/elf2hp



export CC=$(CC_TARGET)-gcc
export AS=$(CC_TARGET)-as
export LD=$(CC_TARGET)-ld
export AR=$(CC_TARGET)-ar


ifeq ($(PLATFORM),cygwin)
endif

export CUR_DIR= $(shell pwd)
ARM_ELF_CFLAGS= -mtune=arm920t -mcpu=arm920t \
	-mlittle-endian -fomit-frame-pointer -msoft-float -Wall \
	-Os -pipe -mthumb-interwork
    
ifdef THUMB
  ifneq ($(THUMB),0)
    ARM_ELF_CFLAGS += -mthumb
  endif
endif

export ARM_ELF_CFLAGS
export ARM_ELF_ASFLAGS= -EL -k -mcpu=arm920t -mno-fpu -mthumb-interwork

export ARM_ELF_LDFLAGS= -nodefaultlibs -nostdlib

#Use standard crt0.o
export SPECIAL_CRT0=$(LIBS_PATH)/crt0.o 

#Use special crt0 module
#export SPECIAL_CRT0=$(LIBS_PATH)/your_custom_crt0_here.o 


#GENERAL ELF2HP FLAGS, RESERVE SMALL STACK SPACE
export ELF2HPFLAGS=-d5 -s10000 -V

#GENERAL ELF2HP FLAGS, RESERVE LARGE STACK SPACE
#export ELF2HPFLAGS=-d15 -s65536 -V

#GENERAL ELF2HP FLAGS, FULL MAIN RAM AVAILABLE FOR STACK
#export ELF2HPFLAGS=-C -V



SRC = $(shell echo *.c)

OBJ=$(SRC:%.c=%.o)

EXE=$(SRC:%.c=%.exe)

HP=$(SRC:%.c=%.hp)


all: $(HP)

install: all

clean:
	rm -rf *.o *.a *.exe *.hp

%.o : %.c
	$(CC) ${ARM_ELF_CFLAGS} -I$(INCLUDE_PATH) -I.. -c $< -o $@

%.exe : %.o
	$(LD) -L$(LIBS_PATH) -T$(LIBS_PATH)/VCld.script $(SPECIAL_CRT0) ${ARM_ELF_LDFLAGS} $< $(LIBS) -o $@

%.hp : %.exe
	$(ELF2HP) $(ELF2HPFLAGS) $< $@