Re: Recursive use of make

[livoriolcc]

>
> Can you post an actual example of what you are doing?
> 
> John.
> -- 
> John Graham-Cumming
> address@hidden
> 
> Home: http://www.jgc.org/
> POPFile: http://getpopfile.org/


Hi, thanks for the answers to my question allready posted, im stuck with school 
stuff so i havent had the chance to implement the recomendations. An example of 
what im doing:

I have a file structure similar to the one that java uses; folders that maps 
the design's logic structure of a system.

cppapis/
|-- bin
|-- doc
|-- obj
`-- src
    |-- bar
    |   |-- Bar.cpp
    |   |-- Bar.h
    |   |-- Bar.mk
    |   `-- BarTest.cpp
    `-- foo
        |-- Foo.cpp
        |-- Foo.h
        |-- Foo.mk
        `-- FooTest.cpp

the folders foo and bar are packages and each one contain a class (a .cpp file 
and a .h file for each class), and for each class i have a .mk file that 
describes the path and class name of each class that is needed by the class 
that the .mk file belongs to. All the object code is stored in obj and the 
executables in bin. An example. The Foo class haves a relation of composition 
with the Bar class, so it needs the .h and .cpp (or .o) of Bar at compilation 
time and the Foo.mk contents looks like this:

IMPORT := /prueba/bar/Bar

THISCPP:= Foo
THISH  := Foo

MAIN   := FooTest

include $(APIS_ROOT)/makefile

MAIN is a variable that contains the executable, in case that exists one, in 
this case is a test of the class. Initially, the makefile is invoked on the .mk 
file of the class we want to compile, in this case we invoke make like this: 
make -f Foo.mk. In the example there is no much problem because the Bar class 
does not import any class, but if it would, then it becomes neccesary to keep 
the path of the folder and the name of the object code. Te first to compile 
THISCPP, the second to link MAIN. The makefile looks like this:

PROY_ROOT:= $(APIS_ROOT)

PROY_SRC := $(PROY_ROOT)/src
PROY_OBJ := $(PROY_ROOT)/obj
PROY_BIN := $(PROY_ROOT)/bin

IMPORT   := $(foreach CLASS, $(IMPORT), $(patsubst %, $(PROY_SRC)%, $(CLASE)))

#####################################
# this is where im wrong, because i thought that
# a variable could keep its value in upper levels
#
ifeq ($(MAKELEVEL), 0)
CCFLAGS  := $(foreach CLASE, $(IMPORT), $(patsubst %, -I%, $(dir $(CLASE))))
export CCFLAGS
else
CCFLAGS  += $(foreach CLASE, $(IMPORT), $(patsubst %, -I%, $(dir $(CLASE))))
endif

ifeq ($(MAKELEVEL), 0)
COD_OBJ  := $(PROY_OBJ)/$(THISCPP).o
export COD_OBJ
else
COD_OBJ  += $(PROY_OBJ)/$(THISCPP).o
endif
#
#
###################################

all : dependencies this executable

.PHONY : all


# ===========================================================================
# dependencies
# ===========================================================================

dependencies : classes $(IMPORT)

classes : $(IMPORT)

$(IMPORT) :
   $(foreach CLASS, $(IMPORT), \
      @$(MAKE) -C $(dir $(IMPORT)) -f $(CLASS).mk dependencies this)


# ===========================================================================
# this
# ===========================================================================

this : $(PROY_OBJ)/$(THISCPP).o

$(PROY_OBJ)/$(THISCPP).o : $(THISCPP).cpp $(THISCPP).h
   @g++ -c $(THISCPP).cpp -o $@ $(CCFLAGS)

# ===========================================================================
# executable
# ===========================================================================

executable : $(PROY_BIN)/$(MAIN)

$(PROY_BIN)/$(MAIN) : $(MAIN).cpp
   @g++ $(MAIN).cpp -o $@ $(CCFLAGS) $(COD_OBJ)

hope i have make myself clear. Thank you so much in advanced, this is my first 
posting experience. I thought that posting in forums was only for gurus.

----- Mensaje original -----
De: John Graham-Cumming <address@hidden>
Fecha: Domingo, Agosto 28, 2005 5:35 am
Asunto: Re: Recursive use of make



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