UNAME_M := $(shell uname -m)

ifeq ($(UNAME_M),x86_64)
	ARCH := ARCHITECTURE_X64
else ifneq ($(filter $(UNAME_M),i686,i386),)
	ARCH := ARCHITECTURE_X86
else ifneq ($(filter $(UNAME_M),aarch64 arm64),)
	ARCH := ARCHITECTURE_ARM64
else ifneq ($(filter $(UNAME_M),armv7l armv6l),)
	ARCH := ARCHITECTURE_ARM32
endif

UNAME_E := $(shell [ $$(printf '\01\00' | od -An -tu2) -eq 1 ] && \
		   echo "little" || echo "big")

ifeq ($(UNAME_E),little)
	ENDIANESS := LITTLE_ENDIAN
else ifeq ($(UNAME_E),little)
	ENDIANESS := BIG_ENDIAN
endif

UNAME_S := $(shell uname -s)

ifeq ($(UNAME_S),Darwin)
	OS := OS_MACOS
else ifeq ($(UNAME_S),Linux)
	OS := OS_LINUX
endif

CC = gcc

ifeq ($(CC),clang)
	COMP := COMPILER_CLANG
else ifeq ($(CC),gcc)
	COMP := COMPILER_GCC
endif

# -ansi -pedantic -pedantic-errors
CFLAGS = -Wno-long-long -Wall -Wextra \
		 -Wincompatible-pointer-types \
		 -Wint-conversion -Wformat \
		 -Wno-strict-prototypes -Wno-missing-field-initializers \
		 -Wno-unused-function -Wno-unused-parameter -Wno-unused-variable \
		 -Wno-unused-but-set-variable \
		 -fno-show-column

ifeq ($(COMP),COMPILER_CLANG)
	CFLAGS += -fno-caret-diagnostics
else ifeq ($(COMP),COMPILER_GCC)
	CFLAGS += -fno-diagnostics-show-caret
endif 

ifeq ($(OS),OS_MACOS)
	FLAGS = -glldb
	INCLUDE = 
	LIBS = 
	FRAMEWORKS = 
else ifeq ($(OS),OS_LINUX)
	FLAGS = -O3 # -ggdb -DDEBUG=1 -DINTERNAL=1
	INCLUDE = -I/usr/include -I/usr/X11R6/include
	LIBS = -lc -lcrypt -lX11 -lXext -lXrandr
	FRAMEWORKS =
endif

EXE = slock
VERSION = "\"1.7\""

default: $(EXE)

$(EXE): $(EXE).c explicit_bzero.c
	$(CC) $(CFLAGS) $(FLAGS) \
		-D$(ARCH)=1 -D$(ENDIANESS)=1 -D$(OS)=1 -D$(COMP)=1 \
		-DVERSION=$(VERSION) -D_DEFAULT_SOURCE -DHAVE_SHADOW_H \
		$(INCLUDE) $^ $(LIBS) \
		$(FRAMEWORKS) -o $@ $(ifneq $(filter $(OS), OS_MACOS OS_LINUX), \
		/link /FORCE:MULTIPLE)

watch:
	@ while true; do \
		inotifywait -q -q -e 'modify' . && clear && make -B; \
	done

perf:
	perf record --call-graph dwarf ./$(EXE)

run:
	@ clear; ./$(EXE)

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