help with converting /usr/ccs/bin/make to GNU make

[Polder, Matthew J]

I have a set of Makefiles I’ve used for years with /usr/ccs/bin/make that I am now trying to get to work with GNU make so I can port from Solaris to Linux. My directory structure is:

 

project:

            objs/

            src/

            lib/

 

objs:

            release/

            debug/

 

If project is a library, then my Makefile boils down to:

 

TARGET = someLibrary

 

SRC = "" foo2.cpp foo3.cpp

LIB_DIR = ../$(TARGET)/lib

OBJ_DIR = ../$(TARGET)/obj

OBJ_RELEASE_DIR = release

 

#This next line appears to work. For /usr/ccs/bin/make I used:

# OBJS = $(SRC:%.cpp=${OBJ_DIR}/${OBJ_RELEASE_DIR}/%.o)

OBJS = $(patsubst %.cpp,$(OBJ_DIR)/$( OBJ_RELEASE_DIR)/%.o,$(SRC))

 

#This is the part that doesn’t work. I’ve tried $^, $< but they resolve to blank space instead of

#the desired name of the cpp file.

$(OBJS): $(patsubst %.o,%.cpp,$(notdir $@))

            g++ -c $^ -o $@

 

#I used to use this line

#${OBJS}: address@hidden:%.o=%.cpp}

#          g++ -c ${*F}.cpp -o $@

 

$(LIB_DIR)/lib$(TARGET).a: $(OBJS)

            #command to link together the library