Makefile

# make CC=aarch64-linux-gcc TARGET=../frontend/bin/muterm

CC       ?= gcc

TARGET   := muterm
SRCDIR   := .
BUILDDIR := build

DEBUG     ?= 0
OPT_LEVEL ?= 2

CFLAGS   ?= -pipe -Wall -Wextra -std=c11
LDLIBS   ?= -lSDL2 -lSDL2_ttf -lSDL2_image

CFLAGS   += -O$(OPT_LEVEL) -D_POSIX_C_SOURCE=200809L -D_GNU_SOURCE \
            -ffunction-sections -fdata-sections -flto=auto \
            -fno-plt -fstack-protector-strong -fstack-clash-protection \
            -D_FORTIFY_SOURCE=3 -fPIE -fno-ident \
            $(if $(filter 1,$(DEBUG)),-g)

LDFLAGS  += -flto=auto -Wl,--gc-sections -pie -Wl,-z,relro,-z,now \
            $(if $(filter 1,$(DEBUG)),,-s)

MAIN_SRC := $(wildcard $(SRCDIR)/*.c)
LANG_SRC := $(wildcard $(SRCDIR)/lang/*.c)

OBJS     := $(MAIN_SRC:$(SRCDIR)/%.c=$(BUILDDIR)/%.o) \
            $(LANG_SRC:$(SRCDIR)/%.c=$(BUILDDIR)/%.o)

DEPS     := $(OBJS:.o=.d)

.PHONY: all clean

all: $(TARGET)

$(TARGET): $(OBJS)
	$(CC) $(LDFLAGS) -o $@ $^ $(LDLIBS)

$(BUILDDIR):
	mkdir -p $(BUILDDIR)

$(BUILDDIR)/lang:
	mkdir -p $(BUILDDIR)/lang

$(BUILDDIR)/%.o: $(SRCDIR)/%.c | $(BUILDDIR)
	$(CC) $(CFLAGS) -MMD -MP -c -o $@ $<

$(BUILDDIR)/lang/%.o: $(SRCDIR)/lang/%.c | $(BUILDDIR)/lang
	$(CC) $(CFLAGS) -MMD -MP -c -o $@ $<

-include $(DEPS)

clean:
	rm -rf $(BUILDDIR) $(TARGET)