# ARM Cortex-Mx common makefile scripts and rules.

##############################################################################
# Processing options coming from the upper Makefile.
#

# Compiler options
OPT    := $(USE_OPT)
COPT   := $(USE_COPT)
CPPOPT := $(USE_CPPOPT)

# Garbage collection
ifeq ($(USE_LINK_GC),yes)
  OPT   += -ffunction-sections -fdata-sections -fno-common
  LDOPT := ,--gc-sections
else
  LDOPT :=
endif

# Linker extra options
ifneq ($(USE_LDOPT),)
  LDOPT := $(LDOPT),$(USE_LDOPT)
endif

# Link time optimizations
ifeq ($(USE_LTO),yes)
  OPT += -flto
endif

# Process stack size
ifeq ($(USE_PROCESS_STACKSIZE),)
  LDOPT := $(LDOPT),--defsym=__process_stack_size__=0x400
else
  LDOPT := $(LDOPT),--defsym=__process_stack_size__=$(USE_PROCESS_STACKSIZE)
endif

# Exceptions stack size
ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
  LDOPT := $(LDOPT),--defsym=__main_stack_size__=0x400
else
  LDOPT := $(LDOPT),--defsym=__main_stack_size__=$(USE_EXCEPTIONS_STACKSIZE)
endif

BUILDDIR = build
OUTFILES := $(BUILDDIR)/$(PROJECT).exe
SRCPATHS  := $(sort $(dir $(ASMXSRC)) $(dir $(ASMSRC)) $(dir $(CSRC)) $(dir $(CPPSRC)))

# Various directories
OBJDIR    := $(BUILDDIR)/obj
LSTDIR    := $(BUILDDIR)/lst

# Object files groups
COBJS    := $(addprefix $(OBJDIR)/, $(notdir $(CSRC:.c=.o)))
CPPOBJS  := $(addprefix $(OBJDIR)/, $(notdir $(CPPSRC:.cpp=.o)))
ASMOBJS   := $(addprefix $(OBJDIR)/, $(notdir $(ASMSRC:.s=.o)))
ASMXOBJS  := $(addprefix $(OBJDIR)/, $(notdir $(ASMXSRC:.S=.o)))
OBJS      := $(ASMXOBJS) $(ASMOBJS) $(COBJS) $(CPPOBJS)

# Paths
IINCDIR   := $(patsubst %,-I%,$(INCDIR) $(DINCDIR) $(UINCDIR))
LLIBDIR   := $(patsubst %,-L%,$(DLIBDIR) $(ULIBDIR))

# Macros
DEFS      := $(DDEFS) $(UDEFS)
ADEFS 	  := $(DADEFS) $(UADEFS)

# Libs
LIBS      := $(DLIBS) $(ULIBS)

# Various settings
MCFLAGS   =
ODFLAGS	  = -x --syms
ASFLAGS   = $(MCFLAGS) -Wa,-amhls=$(LSTDIR)/$(notdir $(<:.s=.lst)) $(ADEFS)
ASXFLAGS  = $(MCFLAGS) -Wa,-amhls=$(LSTDIR)/$(notdir $(<:.S=.lst)) $(ADEFS)
CFLAGS    = $(MCFLAGS) $(OPT) $(COPT) $(CWARN) -Wa,-alms=$(LSTDIR)/$(notdir $(<:.c=.lst)) $(DEFS)
CPPFLAGS  = $(MCFLAGS) $(OPT) $(CPPOPT) $(CPPWARN) -Wa,-alms=$(LSTDIR)/$(notdir $(<:.cpp=.lst)) $(DEFS)
LDFLAGS   = $(MCFLAGS) $(OPT) $(LLIBDIR) -Wl,-Map=$(BUILDDIR)/$(PROJECT).map,--cref,--no-warn-mismatch,--library-path=$(RULESPATH),$(LDOPT)

# Generate dependency information
ASFLAGS  += -MD -MP -MF .dep/$(@F).d
ASXFLAGS += -MD -MP -MF .dep/$(@F).d
CFLAGS   += -MD -MP -MF .dep/$(@F).d
CPPFLAGS += -MD -MP -MF .dep/$(@F).d

# Paths where to search for sources
VPATH     = $(SRCPATHS)

#
# Makefile rules
#

all: $(OBJS) $(OUTFILES)

$(OBJS): $(BUILDDIR) $(OBJDIR) $(LSTDIR)

$(BUILDDIR):
ifneq ($(USE_VERBOSE_COMPILE),yes)
	@echo Compiler Options
	@echo $(CC) -c $(CFLAGS) -I. $(IINCDIR) main.c -o main.o
	@echo
endif
	@mkdir -p $(BUILDDIR)

$(OBJDIR):
	@mkdir -p $(OBJDIR)

$(LSTDIR):
	@mkdir -p $(LSTDIR)

$(CPPOBJS) : $(OBJDIR)/%.o : %.cpp Makefile
ifeq ($(USE_VERBOSE_COMPILE),yes)
	@echo
	$(CPPC) -c $(CPPFLAGS) $(OPT) -I. $(IINCDIR) $< -o $@
else
	@echo Compiling $(<F)
	@$(CPPC) -c $(CPPFLAGS) $(OPT) -I. $(IINCDIR) $< -o $@
endif

$(COBJS) : $(OBJDIR)/%.o : %.c Makefile
ifeq ($(USE_VERBOSE_COMPILE),yes)
	@echo
	$(CC) -c $(CFLAGS) $(OPT) -I. $(IINCDIR) $< -o $@
else
	@echo Compiling $(<F)
	@$(CC) -c $(CFLAGS) $(OPT) -I. $(IINCDIR) $< -o $@
endif

$(ASMOBJS) : $(OBJDIR)/%.o : %.s Makefile
ifeq ($(USE_VERBOSE_COMPILE),yes)
	@echo
	$(AS) -c $(ASFLAGS) -I. $(IINCDIR) $< -o $@
else
	@echo Compiling $(<F)
	@$(AS) -c $(ASFLAGS) -I. $(IINCDIR) $< -o $@
endif

$(ASMXOBJS) : $(OBJDIR)/%.o : %.S Makefile
ifeq ($(USE_VERBOSE_COMPILE),yes)
	@echo
	$(CC) -c $(ASXFLAGS) $(TOPT) -I. $(IINCDIR) $< -o $@
else
	@echo Compiling $(<F)
	@$(CC) -c $(ASXFLAGS) $(TOPT) -I. $(IINCDIR) $< -o $@
endif

$(BUILDDIR)/$(PROJECT).exe: $(OBJS) $(LDSCRIPT)
ifeq ($(USE_VERBOSE_COMPILE),yes)
	@echo
	$(LD) $(OBJS) $(LDFLAGS) $(LIBS) -o $@
else
	@echo Linking $@
	@$(LD) $(OBJS) $(LDFLAGS) $(LIBS) -o $@
endif

clean:
	@echo Cleaning
	-rm -fR .dep $(BUILDDIR)
	@echo
	@echo Done

#
# Include the dependency files, should be the last of the makefile
#
-include $(shell mkdir .dep 2>/dev/null) $(wildcard .dep/*)

# *** EOF ***