CODEWITHSUNDEEP
c++makefilegnu-make
Sidhin S Thomas
Sidhin S Thomas

Reputation: 885

change this makefile so that it will automatically consider all files in a directory as a dependency?

This is the first makefile I am making, I need you help to change it a little. Here is the makefile I have right now

VPATH = src
BUILD = build
BIN = bin
INCLUDE = C:\Users\sidhi\Desktop\Projects\sfml-snake\internalLibraries\include

$(shell mkdir -p build)
$(shell mkdir -p bin)

CC = g++ 
CFLAGS  = -g -std=c++11
LIBS=-lsfml-graphics -lsfml-window -lsfml-system


G++_VER_LT48 := $(shell expr `$(CC) -dumpversion | cut -f1-2 -d.` \< 4.8 )
ifeq ("$(G++_VER_LT48)","1")
$(error old version of g++ not supported, upgrade to 4.8 or higher)
endif


default: bin/game


$(BIN)/game: $(BUILD)/main.o $(BUILD)/game.o $(BUILD)/food.o $(BUILD)/snake.o
    $(CC) $(CFLAGS) -o $(BIN)/game $(BUILD)/main.o $(BUILD)/game.o $(BUILD)/food.o $(BUILD)/snake.o $(LIBS)


$(BUILD)/%.o: %.cpp
    $(CC) -c $(CFLAGS) $< -o $@ -I $(INCLUDE)

I want to change it such that, all the files in the build/ directory gets added as a dependency. something like

bin/game: $(BUILD)/%.o

But that doesn't work.

Also, How can I include more path to the VPATH ?

Upvotes: 1

Views: 52

Answers (2)

user2100815
user2100815

Reputation:

GNU Make has a number of useful built-in functions you can use to generate lists of files. For example, this:

SRCFILES := $(wildcard *.cpp)

creates a list of .cpp files in the current directory, and then this:

OBJFILES := $(patsubst %.cpp,%.o,$(SRCFILES))

performs an edit on that list to create a new list of the corresponding .o files.

Upvotes: 2

razorx
razorx

Reputation: 117

You could try something like:

OBJ=$(shell find $(PROJDIRS) -type f -name "*.o")

And then:

$(BIN)/game: OBJ

Hope this helps...

Upvotes: -1

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