# this could be done better
RELEASE		?= 0
OPTFLAGS	!= [ "$(RELEASE)" != "0" ] \
			&& echo "-O2" \
			|| echo "-O0"

LTO		?= 0
LTOFLAGS	!= [ "$(LTO)" != "0" ] \
			&& echo "-flto=auto"

DEBUG		?= 1
DEBUGFLAGS	!= [ "$(DEBUG)" != "0" ] \
			&& echo "-DDEBUG=1" \
			|| echo "-DNDEBUG=1"

DEPFLAGS	= -MT $@ -MMD -MP -MF $@.d
LINTFLAGS	:= -fsyntax-only
PREPROCESS	:= -E

LLVM		?= 0
BUILD		:= build

all: ejit.o

# default values, overwrite if/when needed
CROSS_COMPILE	:=

OBJCOPY		!= [ "$(LLVM)" != "0" ] \
			&& echo llvm-objcopy \
			|| echo $(CROSS_COMPILE)objcopy

COMPILER	!= [ "$(LLVM)" != "0" ] \
			&& echo clang --target="$(CROSS_COMPILE)" \
			|| echo $(CROSS_COMPILE)gcc


OBFLAGS		:= -g
# interpreter is allowed to have uninitialized values
WARNFLAGS	:= -Wall -Wextra -Wno-maybe-uninitialized

COMPILE_FLAGS	:= $(CFLAGS) $(WARNFLAGS) $(OPTFLAGS) $(LTOFLAGS) \
		   $(OBFLAGS) $(ASSERTFLAGS) $(DEBUGFLAGS)

INCLUDE_FLAGS	:= -I include

COMPILE		= $(COMPILER) \
		  $(COMPILE_FLAGS) $(DEPFLAGS) $(INCLUDE_FLAGS)

LINT		= $(COMPILER) \
		  $(COMPILE_FLAGS) $(LINTFLAGS) $(INCLUDE_FLAGS)

UBSAN		?= 0
UBSAN_FLAGS	!= [ "$(UBSAN)" != "0" ] \
			&& echo -fsanitize=undefined \
			|| echo

COMPILE_EJIT	= $(COMPILE) $(EJIT_FLAGS)

-include deps.mk

ejit.o: $(EJIT_OBJS)
	ld -relocatable $(EJIT_OBJS) -o $@

examples: examples/loop examples/fib examples/matrix_mult

examples/matrix_mult: examples/matrix_mult.c ejit.o
	$(COMPILE_EJIT) examples/matrix_mult.c ejit.o -o $@

examples/loop: examples/loop.c ejit.o
	$(COMPILE_EJIT) examples/loop.c ejit.o -o $@

examples/fib: examples/fib.c ejit.o
	$(COMPILE_EJIT) examples/fib.c ejit.o -o $@

# might lint some common things twice
.PHONY:
lint: $(TRISCV_LINTS)