TARGET  = $(notdir $(CURDIR))

INSTALL = /usr/local/bin

SRCEXT  = .c
INCEXT  = .h
OBJEXT  = .o

SRCDIR  = src
INCDIR  = .
OBJDIR  = bin

CC      = gcc
LD      = gcc 

LDFLAGS = -lm -lpthread
CCFLAGS = -std=gnu99 -g -ggdb -Og -Wall -Wextra -pedantic -Wno-unused-parameter

SRCTREE = $(shell find $(SRCDIR) -type d)
INCS    = $(shell find $(INCDIR) -type f -name '*$(INCEXT)')
SRCS    = $(shell find $(SRCDIR) -type f -name '*$(SRCEXT)')
OBJTREE = $(foreach D,$(SRCTREE),$(shell echo $(D) | sed 's/$(SRCDIR)/$(OBJDIR)/'))
OBJSTMP = $(foreach F,$(SRCS),$(shell echo $(F) | sed -e 's/$(SRCDIR)/$(OBJDIR)/'))
OBJS    = $(foreach O,$(OBJSTMP),$(shell echo $(O) | sed -e 's/\$(SRCEXT)/\$(OBJEXT)/'))

build: $(TARGET)
	@echo Done.

run: build
	@./$(TARGET)

install: $(TARGET)
	@test ! -d ~/bin && cp $(TARGET) ~/bin &>/dev/null \
		|| echo "Directory ~/bin does not exist, installation failed"

uninstall:
	-@rm ~/bin/psh

clean:
	@rm -r $(TARGET) $(OBJS) $(OBJDIR) 2>/dev/null || true

$(TARGET): $(OBJS) | $(OBJDIR) 
	@$(LD) $(LDFLAGS) -L$(OBJDIR) -o $@ $^

$(OBJS): $(OBJDIR)/%$(OBJEXT) : $(SRCDIR)/%$(SRCEXT) | $(OBJDIR)
	@$(CC) $(CCFLAGS) -I$(INCDIR) -c -o $@ $?

$(OBJDIR):
	@mkdir -p $(OBJDIR) $(OBJTREE)

.PHONY: build run install clean