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Makefiles for different programs

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# 1  
Old 01-03-2013
Makefiles for different programs
I have several programs in several directories and want to use make to build the executables. What I have done is to put the main programs in their own directory together with a makefile to build the program. Then I am thinking of having another makefile residing in the directory above so I can run those makefiles.

Is this the way to do things or are there better suggestions?

---------- Post updated at 02:54 PM ---------- Previous update was at 02:23 PM ----------

Currently I have the following tree

Code:
boost-exx
├── bin
├── exx01
│   ├── exx01.cc
│   ├── exx01.o
│   └── Makefile
├── exx02
│   ├── exx02.cc
│   └── Makefile
├── exx03
│   ├── exx03.cc
│   └── Makefile
└── Makefile

---------- Post updated at 03:01 PM ---------- Previous update was at 02:54 PM ----------

The sub makefiles are as follows, with different SOURCES and EXECUTABLE
according to the directory name.

Code:
CPP = g++
CPPFLAGS = -pedantic -Wall -Wextra -Werror -Wno-non-template-friend -DNDEBUG
BOOSTIP = -I../boost_1_52_0
BOOSTLP = -L./library/boost_1_52_0/libs
SOURCES = exx01.cc
OBJECTS = $(SOURCES:.cc=.o)
EXECUTABLE = exx01

all: $(SOURCES) $(EXECUTABLE)
    
$(EXECUTABLE): $(OBJECTS) 
    $(CPP) $(BOOSTLP) $(OBJECTS) -o $@

.cc.o:
    $(CPP) $(CPPFLAGS) $(BOOSTIP) $< -o $@

.PHONY: clean

clean:
    rm -f $(EXECUTABLE) *.o

---------- Post updated at 03:14 PM ---------- Previous update was at 03:01 PM ----------

The main makefile is like this, but is not working

Code:
# Main makefile

PROG = exx
TRGTS = exx01 exx02 exx03

$(PROG): $(TRGTS)

all: $(TRGTS)

exx01:
    cd ./exx01 ; make exx01

exx02:
    cd ./exx02 ; make exx02

exx03:
    cd ./exx03 ; make exx03

clean:
    rm -f *.o *~
    cd ./exx01 ; make clean
    cd ./exx02 ; make clean
    cd ./exx03 ; make clean

---------- Post updated at 03:47 PM ---------- Previous update was at 03:14 PM ----------

My subdirectory makefiles are not working either

---------- Post updated at 04:19 PM ---------- Previous update was at 03:47 PM ----------

Now I have changed the internal makefiles which build the programs successfully
Hence the remaining problem is fixing the top makefile


Code:
CPP = g++
CPPFLAGS = -pedantic -Wall -Wextra -Werror -Wno-non-template-friend -DNDEBUG
BOOSTIP = -I../../boost_1_52_0
BOOSTLP = -L../../boost_1_52_0/libs
SOURCES = exx02.cc
OBJECTS = $(SOURCES:.cc=.o)
EXECUTABLE = exx02

all: $(SOURCES) $(EXECUTABLE)
    
$(EXECUTABLE): $(OBJECTS)
    $(CPP) $(BOOSTLP) $(OBJECTS) -o $(EXECUTABLE)

%.o : %.c
    $(CPP) $(CPPFLAGS) $(BOOSTIP) -c $<

.PHONY: clean

clean:
    rm -f $(EXECUTABLE) *.o

# 2  
Old 01-03-2013
look at the reply#6 to your previous post
https://www.unix.com/302750539-post6.html
It shows general top level make example
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