# --------------------------------------------------------------------------
# Linker Script
LINKER_SCRIPT = ../sections.ld
# Files to be compiled (important: defined prior to importing common.mk!)
CC_SOURCES = $(shell find * -name "*.cc" -a ! -name '.*' )
ASM_SOURCES = $(shell find * -name "*.asm"  -a ! -name '.*' )

CXXFLAGS_INCLUDE =  -I../../libsys -I../../kernel
CXXFLAGS_DEFAULT += $(CXXFLAGS_INCLUDE)

# -----------------------------------------------------------------------------
# Globale Variablen und Standard-Rezepte einbinden
include ../../tools/common.mk

# --------------------------------------------------------------------------
# Default target

.DEFAULT_GOAL = all
all: $(BUILDDIR)/app.img

# -----------------------------------------------------------------------------
# Parameters & flags:

CXXFLAGS += $(CXXFLAGS_INCLUDE)
# Enable 16-byte compare-and-exchange instruction for debugging purposes (stack alignment)
CXXFLAGS += -mcx16

LDLIBS += -L../../libsys/$(BUILDDIR) -lsys
INITOBJ = ../$(BUILDDIR)/init.o

# --------------------------------------------------------------------------
# Linked applications
$(BUILDDIR)/app: $(INITOBJ)  $(ASM_OBJECTS) $(CC_OBJECTS) $(LINKER_SCRIPT) $(MAKEFILE_LIST)
	@echo "LD		$@"
	@mkdir -p $(@D)
	$(VERBOSE) $(CXX) $(CXXFLAGS) -Wl,-T $(LINKER_SCRIPT) -o $@ $(LDFLAGS) $(INITOBJ) $(ASM_OBJECTS) $(CC_OBJECTS) $(LDLIBS)

# --------------------------------------------------------------------------
# 'app.img' contains all section required for loading an application (flat binary)

$(BUILDDIR)/app.img: $(BUILDDIR)/app
	@echo "OBJCOPY		$@"
	@if ! nm $< | grep "4000000 T start" >/dev/null 2>&1 ; then echo "Symbol 'start' is not first address" ; exit 1 ; fi
	@mkdir -p $(@D)
	$(VERBOSE) objcopy -O binary --set-section-flags .bss=alloc,load,contents $< $@

# --------------------------------------------------------------------------
# Include dependency files (generated gcc -MM)

ifneq ($(MAKECMDGOALS),clean)
-include $(DEP_FILES)
endif