c++ - makefile 错误，从 src 目录中的所有内容构建

Question

我一直在尝试复制我在网上找到的一个 makefile。我目前遇到以下错误:

MyComputer:folderName userName$ make
make: bin/kernel: No such file or directory
make: *** [bin/kernel] Error 1

makefile源码如下:

### Typing 'make' will create the executable file.
CC = gcc
CFLAGS  = -g -Wall
LDFLAGS = 
LIBS = -lstdc++

TARGET = kernel
SRCDIR = src
OBJDIR = obj
BINDIR = bin
#TARGETDIR = $(BINDIR)/$(TARGET)

SOURCES  := $(wildcard $(SRCDIR)/*.cc)
INCLUDES := $(wildcard $(SRCDIR)/*.h)
OBJECTS  := $(SOURCES:$(SRCDIR)/%.cc=$(OBJDIR)/%.o)
rm       = rm -f

$(BINDIR)/$(TARGET): $(OBJECTS)
    @$(LINKER) $@ $(LFLAGS) $(OBJECTS) $(LIBS)
    @echo "Linking complete!"

$(OBJECTS): $(OBJDIR)/%.o : $(SRCDIR)/%.cc
    @$(CC) $(CFLAGS) -c $< -o $@
    @echo "Compiled "$<" successfully!"

#$(CC) $(CFLAGS) $(LFLAGS) -o $(MAIN) $(OBJS) $(LIBS) $@

#make clean removed from this code, unnecessary

我尝试过的事情:

• 将 $(BINDER)/$(TARGET): 更改为 $(BINDER)(make: bin: No such file or directory )
• 更改文件夹权限并以 sudo 身份运行(无效)
• 制作 bin/kernel 文件夹(使用 sudo 和 chmod 777 权限被拒绝)
• 向我们的黑暗领主克苏鲁祈祷(可能是不可避免的厄运)

Answer 1

您的 Makefile 假定项目目录的结构如下:

.
├── bin
├── Makefile
├── obj
└── src
    └── main.cc

我修改了链接阶段，因为您没有定义 $(LINKER):

CC = gcc
CFLAGS  = -g -Wall
LDFLAGS = 
LIBS = -lstdc++

TARGET = kernel
SRCDIR = src
OBJDIR = obj
BINDIR = bin

SOURCES  := $(wildcard $(SRCDIR)/*.cc)
INCLUDES := $(wildcard $(SRCDIR)/*.h)
OBJECTS  := $(SOURCES:$(SRCDIR)/%.cc=$(OBJDIR)/%.o)
rm       = rm -f

$(BINDIR)/$(TARGET): $(OBJECTS)
    @$(CC) -o $@ $(LFLAGS) $(OBJECTS) $(LIBS)
    @echo "Linking complete!"

$(OBJECTS): $(OBJDIR)/%.o : $(SRCDIR)/%.cc
    @$(CC) $(CFLAGS) -c $< -o $@
    @echo "Compiled "$<" successfully!" 

运行 make 现在将创建内核二进制文件。

.
├── bin
│   └── kernel
├── Makefile
├── obj
│   └── main.o
└── src
    └── main.cc