.PHONY: run clean install all
.DELETE_ON_ERROR: $(BINDIR)/Getting_Started_with_GTK
.DEFAULT_GOAL: all

NTHREADS= $(shell nproc)

CC=gcc
CFLAGS=`pkg-config --cflags gtk4 gl glib-2.0 libxml-2.0`
LDFLAGS=`pkg-config --libs gtk4 gl glib-2.0 libxml-2.0` -lGL -lGLU -lm -lepoxy -lX11 -lGLEW
WARNINGS = -Wall
DEBUG = -ggdb -fno-omit-frame-pointer #-fdiagnostics-color=always -fsanitize=bounds -fstack-check
OPTIMIZE = -O3

BINDIR=bin
BUILDDIR=build
SRCDIR=src

SOURCES = $(shell find $(SRCDIR) -type f -name "*.c")
OBJECTS = $(patsubst %.c,$(BUILDDIR)/%.o,$(SOURCES))
DEPENDENCIES = $(patsubst %.c,$(BUILDDIR)/%.d,$(SOURCES))

all: $(BINDIR)/gem-graph-client

-include /etc/os-release

#
# Directories
#
$(BUILDDIR):
	mkdir -p $@

$(BINDIR):
	mkdir -p $@

#
# Dependencies
#
-include $(DEPENDENCIES)

$(BUILDDIR)/%.d: %.c Makefile | $(BUILDDIR)
	mkdir -p $(shell dirname $@)
	$(CC) $(CFLAGS) -MM -MT $(@:%.d=%.o) -MF $@ $<

#
# Main program
#
$(BINDIR)/gem-graph-client: $(OBJECTS) | $(BINDIR)
	$(CC) $(LDFLAGS) $(WARNINGS) $(DEBUG) $(OPTIMIZE) $^ -o $@

#
# Objects
#
$(BUILDDIR)/%.o: %.c Makefile | $(BUILDDIR)
	mkdir -p $(shell dirname $@)
	$(CC) $(CFLAGS) $(WARNINGS) $(DEBUG) $(OPTIMIZE) -c $< -o $@

#
# Virtual recipes
#
install:
	echo "Installing is not supported"

run: $(BINDIR)/gem-graph-client
	$(BINDIR)/gem-graph-client

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


# More docs :
#       https://www.gnu.org/software/make/manual/
#	accessoirement : https://blog.stephane-robert.info/docs/makefile/  & /docs/task/