#-----------------------------------------------------------------------------
# This code is licensed to you under the terms of the GNU GPL, version 2 or,
# at your option, any later version. See the LICENSE.txt file for the text of
# the license.
#-----------------------------------------------------------------------------
# Common makefile functions for all platforms
#-----------------------------------------------------------------------------

# Make sure that all is the default target
# (The including Makefile still needs to define what 'all' is)

all:

# This Makefile might have been called from various subdirs, trying to find our Makefile.defs
ifeq ($(DEFSBEENHERE),)
    -include Makefile.defs
endif
ifeq ($(DEFSBEENHERE),)
    -include ../Makefile.defs
endif
ifeq ($(DEFSBEENHERE),)
    -include ../../Makefile.defs
endif
ifeq ($(DEFSBEENHERE),)
    $(error Can't find Makefile.defs)
endif

CC = $(CROSS)gcc
AS = $(CROSS)as
LD = $(CROSS)ld
OBJCOPY = $(CROSS)objcopy

OBJDIR = obj

INCLUDE = -I../include -I../common_arm -I../common_fpga -I../common -I.

# Also search prerequisites in the common directory (for usb.c), the fpga directory (for fpga.bit), and the zlib directory
VPATH = . ../common_arm ../common ../common/crapto1 ../common/mbedtls ../common/zlib ../fpga ../armsrc/Standalone

INCLUDES = ../include/proxmark3_arm.h ../include/at91sam7s512.h ../include/config_gpio.h ../include/pm3_cmd.h

CFLAGS ?= -Wall -Werror -pedantic -Wunused -Os -mthumb-interwork
CFLAGS += -c $(INCLUDE) -std=c99 $(APP_CFLAGS)

LDFLAGS += -nostartfiles -nodefaultlibs -Wl,-gc-sections -Wl,--build-id=none -n
LIBS = -lgcc

# Flags to generate temporary dependency files
DEPFLAGS = -MT $@ -MMD -MP -MF $(OBJDIR)/$*.Td
# make temporary to final dependency files after successful compilation
POSTCOMPILE = $(MV) -f $(OBJDIR)/$*.Td $(OBJDIR)/$*.d

THUMBOBJ = $(patsubst %.c,$(OBJDIR)/%.o,$(notdir $(THUMBSRC)))
ARMOBJ   = $(patsubst %.c,$(OBJDIR)/%.o,$(notdir $(ARMSRC)))
ASMOBJ   = $(patsubst %.s,$(OBJDIR)/%.o,$(notdir $(ASMSRC)))
VERSIONOBJ = $(patsubst %.c,$(OBJDIR)/%.o,$(notdir $(VERSIONSRC)))

$(THUMBOBJ): $(OBJDIR)/%.o: %.c $(INCLUDES)
	$(info [-] CC $<)
	$(Q)$(CC) $(CFLAGS) $(DEPFLAGS) -mthumb -o $@ $< 
	$(Q)$(POSTCOMPILE)

$(ARMOBJ): $(OBJDIR)/%.o: %.c $(INCLUDES)
	$(info [-] CC $<)
	$(Q)$(CC) $(CFLAGS) $(DEPFLAGS) -o $@ $< 
	$(Q)$(POSTCOMPILE)

$(ASMOBJ): $(OBJDIR)/%.o: %.s
	$(info [-] CC $<)
	$(Q)$(CC) $(CFLAGS) -o $@ $<

$(VERSIONOBJ): $(OBJDIR)/%.o: %.c $(INCLUDES)
	$(info [-] CC $<)
	$(Q)$(CC) $(CFLAGS) -mthumb -o $@ $< 

# This objcopy call translates physical flash addresses to logical addresses
# without touching start address or RAM addresses (.bss and .data sections)
# See ldscript.common. -- Henryk Plötz <henryk@ploetzli.ch> 2009-08-27
OBJCOPY_TRANSLATIONS = --no-change-warnings \
    --change-addresses -0x100000 --change-start 0 \
    --change-section-address .bss+0 --change-section-address .data-0x100000 \
    --change-section-address .commonarea+0
$(OBJDIR)/%.s19: $(OBJDIR)/%.elf
	$(info [=] GEN $@)
	$(Q)$(OBJCOPY) -Osrec --srec-forceS3 --strip-debug $(OBJCOPY_TRANSLATIONS) $^ $@

# easy printing of MAKE VARIABLES
print-%: ; @echo $* = $($*) 

# Automatic dependency generation
DEPENDENCY_FILES = $(patsubst %.c,$(OBJDIR)/%.d,$(notdir $(THUMBSRC))) \
	$(patsubst %.c,$(OBJDIR)/%.d,$(notdir $(ARMSRC))) \
	$(patsubst %.s,$(OBJDIR)/%.d,$(notdir $(ASMSRC)))

$(DEPENDENCY_FILES): Makefile ../common_arm/Makefile.common
.PRECIOUS: $(DEPENDENCY_FILES)

-include $(DEPENDENCY_FILES)