Creating a project, from Makefile to static/dynamic libraries in UNIX

Question

Guys, would you describe a few things about c++ building blocks, on unix.

I want to create an application that links against static libs and dynamic libs (.so).

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Answer 1

Bare bones Makefile for creating a static library consisting of the code in foo.cpp, bar.cpp:

PROJECT = library.a
OBJECTS = foo.o bar.o
CFLAGS  = -Wall -pedantic

all: $(PROJECT)

.cpp.o:
        g++ -c $(CFLAGS) $<

$(PROJECT): $(OBJECTS)
        libtool -o $(PROJECT) -static $(OBJECTS)

Bare bones Makefile for an app baz.cpp that static links to library.a:

PROJECT = baz
CFLAGS  = -Wall -pedantic
OBJECTS = baz.o

all: $(PROJECT)

.cpp.o:
        g++ -c $(CFLAGS) $<

$(PROJECT): $(OBJECTS) library.a
        g++ $(OBJECTS) -L. -llibrary -o $(PROJECT)

Dynamic library left, ahem, as an exercise to the reader.