Makefile:从一个目录获取.cpp并将编译好的.o放在另一个目录中

Question

我正在为移动设备(Windows Mobile 6和Android)开发跨平台2D引擎.我的Windows版本已经准备就绪,但我仍然需要确保在Android上提供相同的功能.

我想要的是Makefile项目的根目录,以及Makefile项目本身和测试应用程序的几个.

Makefile
---Engine
------Makefile
------src
------bin
------intermediate
---Tests
------TestOne
---------Makefile
---------src
---------bin
---------intermediate
------TestTwo
---------Makefile
---------src
---------bin
---------intermediate

我正在尝试以下方面Makefile:

 include ../makeinclude

 PROGS = test1
 SOURCES = $(wildcard *.cpp)

 # first compile main.o and start.o, then compile the rest
 OBJECTS = main.o start.o $(SOURCES:.cpp=.o)

 all: $(PROGS)

 clean:
    rm -f *.o src

 test1: $(OBJECTS)
    $(LD) --entry=_start --dynamic-linker system/bin/linker -nostdlib -rpath system/lib -rpath $(LIBS) -L $(LIBS) -lm -lc -lui -lGLESv1_CM $^ -o ../$@ 
    acpy ../$(PROGS)
 .cpp.o:
    $(CC) $(CFLAGS) -I $(GLES_INCLUDES) -c $*.cpp $(CLIBS)

但是,我对这些事情不是很了解.我想要的是它获取src文件夹中的.cpp ,将它们编译为.o并将它们放在intermediate文件夹中,最后将.o编译成编译的exe并将其放入bin文件夹中.

我已经设法干净地工作了这样:

cd intermediate && rm -f *.o

但是,我无法检索.cpp,编译它们并将它们放在intermediate文件夹中.

我看过其他几个Makefiles,但没有做我想做的事情.

任何帮助表示赞赏.

Answer 1

有多种方法可以做到这一点,但最简单的方法是在TestOne中运行,使得中间/ foo.o从Src/foo.cpp和test1中调出Intermediate/foo.o,如下所示:

# This makefile resides in TestOne, and should be run from there.

include makeinclude # Adjust the path to makeinclude, if need be.

PROG = bin/test1 
SOURCES = $(wildcard Src/*.cpp) 

# Since main.cpp and start.cpp should be in Src/ with the rest of
# the source code, there's no need to single them out
OBJECTS = $(patsubst Src/%.cpp,Intermediate/%.o,$(SOURCES))

all: $(PROG)

clean: 
    rm -f Intermediate/*.o bin/*

$(PROG): $(OBJECTS) 
    $(LD) $(BLAH_BLAH_BLAH) $^ -o ../$@  

$(OBJECTS): Intermediate/%.o : Src/%.cpp
    $(CC) $(CFLAGS) -I $(GLES_INCLUDES) -c $< $(CLIBS) -o $@