$ cat foo.c

foo()

{

        (void) printf("foo: called from lib.a\n");

}

$ cat bar.c

bar()

{

        (void) printf("bar: called from lib.a\n");

}

$ cat main.c

extern  void    foo(), bar();



main()

{

        foo();

        bar();

}

$ ar -rc lib.a foo.o bar.o main.o

$ cat mapfile

{

        local:

                foo;

                bar;

        global:

                main;

};

$ cc -o prog -M mapfile lib.a

$ prog

foo: called from lib.a

bar: called from lib.a

$ nm -x prog | egrep "main$|foo$|bar$"

[28]    |0x00010604|0x00000024|FUNC |LOCL |0x0  |7      |foo

[30]    |0x00010628|0x00000024|FUNC |LOCL |0x0  |7      |bar

[49]    |0x0001064c|0x00000024|FUNC |GLOB |0x0  |7      |main