ifeq ($(OS),Windows_NT)
    DETECTED_OS := windows
else
    UNAME_S := $(shell uname -s)

    ifeq ($(UNAME_S),Darwin)
        DETECTED_OS := macos
    else ifeq ($(UNAME_S),Linux)
        DETECTED_OS := linux
    else
        DETECTED_OS := unknown
	endif
endif

CC = clang

UFLAGS =
# NOTE: This project's code bases itself on C89 (plain C) standard, however 
#       allowing a few convenient features of newer standards. Mid-scope
#       variable declarations, comments that begin with '//', long long,
#       designated initializers, compound literals, and anonymous structures
#       are allowed as they are convenient. Everything else that has come out
#       of modern standards is pretty much destructive and should not be used.
FLAGS = -Wall -Wextra \
		-Wincompatible-pointer-types \
		-Wint-conversion -Wimplicit-int-float-conversion -Wformat \
		-Wno-strict-prototypes -Wno-missing-field-initializers \
		-Wno-unused-function -Wno-unused-parameter -Wno-unused-variable \
		-Wno-unused-but-set-variable \
		-fno-caret-diagnostics -fno-show-column

ifeq ($(DETECTED_OS),macos)
	UFLAGS = -glldb
	INCLUDE = -I./sdl/include/
	LIBS = ./sdl/lib/arm-macos/libSDL2.a -lm
	FRAMEWORKS = -framework Cocoa -framework IOKit -framework CoreAudio \
				 -framework AudioToolbox -framework ForceFeedback \
				 -framework Carbon -framework GameController \
				 -framework Metal -framework QuartzCore \
				 -framework CoreHaptics
else ifeq ($(DETECTED_OS),linux)
	UFLAGS = -ggdb -D_POSIX_C_SOURCE=200809L
	INCLUDE = -I./sdl/include/
	LIBS = ./sdl/lib/x86_64-linux/libSDL2.a -lm -lX11
	FRAMEWORKS =
else ifeq ($(DETECTED_OS),windows)
	INCLUDE =
	LIBS =
	FRAMEWORKS =
else
	INCLUDE =
	LIBS =
	FRAMEWORKS =
endif

EXE=handmadehero

default: libhandmade $(EXE)

libhandmade: handmade.c
	@ $(CC) $(FLAGS) $(UFLAGS) -fPIC -shared $(INCLUDE) $^ $(LIBS) \
		$(FRAMEWORKS) -o libhandmade.so

$(EXE): sdl_handmade.c libhandmade
	@ $(CC) $(FLAGS) $(UFLAGS) $(INCLUDE) sdl_handmade.c $(LIBS) \
		$(FRAMEWORKS) -o $@

run:
	@ ./$(EXE)

tags: $(OBJS)
	ctags -R *.h *.c

clean:
	@rm -rf $(EXE) $(EXE).dSYM libhandmade.so libhandmade.so.dSYM