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Annotation of coherent/d/lib/libc/stdio/Makefile, revision 1.1

1.1     ! root        1: # /usr/src/libc/stdio/Makefile 2/14/91
        !             2: 
        !             3: # The order of stdio objects in libc.a is significant and a bit complicated.
        !             4: # To reduce the size of linked objects when possible,
        !             5: # libc includes both real and fake versions of _dtefg() (floating point output)
        !             6: # and of _finish() (close open FILEs).
        !             7: # If a program requires floating point output, the "-f" flag to /bin/cc
        !             8: # produces an "-u _dtefg_" argument to /bin/ld, forcing the link to include
        !             9: # the real floating point output routine from _dtefg.o.
        !            10: # Otherwise, /bin/ld resolves the reference to _dtefg() in printf.o with
        !            11: # the much smaller fake floating point output routine from _fdtefg.o.
        !            12: # To avoid linking in extra stdio overhead when not required,
        !            13: # libc.a should contain _fp.o, finit.o, exit.o and _finish.o, in that order,
        !            14: # after stdio objects from $(OBJ) and from the machine-dependent subdirectory,
        !            15: # If a program uses stdio, /bin/ld will link in finit.o;
        !            16: # finit.o defines the real _finish() which closes all open files for exit().
        !            17: # If a program does not use stdio, /bin/ld will link in exit.o but not finit.o;
        !            18: # then it resolves the _finish() reference in exit() with the fake _finish.o,
        !            19: # which does nothing.
        !            20: 
        !            21: OBJ=\
        !            22:        _fgetb.o\
        !            23:        _fgetc.o\
        !            24:        _fgeteof.o\
        !            25:        _fopen.o\
        !            26:        _fpseek.o\
        !            27:        _fputb.o\
        !            28:        _fputc.o\
        !            29:        _fputt.o\
        !            30:        _stropen.o\
        !            31:        fclose.o\
        !            32:        fdopen.o\
        !            33:        fflush.o\
        !            34:        fgetc.o\
        !            35:        fgets.o\
        !            36:        fopen.o\
        !            37:        fputc.o\
        !            38:        fputs.o\
        !            39:        fread.o\
        !            40:        freopen.o\
        !            41:        fseek.o\
        !            42:        ftell.o\
        !            43:        fwrite.o\
        !            44:        getc.o\
        !            45:        getchar.o\
        !            46:        gets.o\
        !            47:        popen.o\
        !            48:        putc.o\
        !            49:        putchar.o\
        !            50:        puts.o\
        !            51:        rewind.o\
        !            52:        scanf.o\
        !            53:        setbuf.o\
        !            54:        ungetc.o
        !            55: 
        !            56: # N.B. The order of objects in $(OBJ2) is significant,
        !            57: # see the lengthy comment above and be extremely careful if you change it.
        !            58: OBJ2=\
        !            59:        _dtefg.o\
        !            60:        printf.o\
        !            61:        _fdtefg.o\
        !            62:        _fp.o\
        !            63:        finit.o\
        !            64:        exit.o\
        !            65:        _finish.o
        !            66: 
        !            67: # Primary target.
        !            68: all:   stdioi8086 STDIO
        !            69:        : libc/stdio done.
        !            70: 
        !            71: # Pseudotargets.
        !            72: stdioi8086:
        !            73:        make SRCPATH=$(SRCPATH)/i8086
        !            74: # This assumes that either libc.a is being made from scratch
        !            75: # or the names of the objects in $(OBJ2) are unchanged.
        !            76: # Otherwise, "ar rkus lib.c $?" may not preserve the required object order.
        !            77: # It could be done more correctly with ar positional specifications.
        !            78: STDIO: $(OBJ) $(OBJ2)
        !            79:        ar rkus libc.a $?
        !            80:        touch $@
        !            81: 
        !            82: # Secondary targets.
        !            83: _dtefg.o:      _dtefg.c
        !            84: _fdtefg.o:     _fdtefg.c
        !            85: _fgetb.o:      _fgetb.c
        !            86: _fgetc.o:      _fgetc.c
        !            87: _fgeteof.o:    _fgeteof.c
        !            88: _finish.o:     _finish.c
        !            89: _fopen.o:      _fopen.c
        !            90: _fp.o:         _fp.c
        !            91: _fpseek.o:     _fpseek.c
        !            92: _fputb.o:      _fputb.c
        !            93: _fputc.o:      _fputc.c
        !            94: _fputt.o:      _fputt.c
        !            95: _stropen.o:    _stropen.c
        !            96: exit.o:                exit.c
        !            97: fclose.o:      fclose.c
        !            98: fdopen.o:      fdopen.c
        !            99: fflush.o:      fflush.c
        !           100: fgetc.o:       fgetc.c
        !           101: fgets.o:       fgets.c
        !           102: finit.o:       finit.c
        !           103: fopen.o:       fopen.c
        !           104: fputc.o:       fputc.c
        !           105: fputs.o:       fputs.c
        !           106: fread.o:       fread.c
        !           107: freopen.o:     freopen.c
        !           108: fseek.o:       fseek.c
        !           109: ftell.o:       ftell.c
        !           110: fwrite.o:      fwrite.c
        !           111: getc.o:                getc.c
        !           112: getchar.o:     getchar.c
        !           113: gets.o:                gets.c
        !           114: popen.o:       popen.c
        !           115: printf.o:      printf.c
        !           116: putc.o:                putc.c
        !           117: putchar.o:     putchar.c
        !           118: puts.o:                puts.c
        !           119: rewind.o:      rewind.c
        !           120: scanf.o:       scanf.c
        !           121: setbuf.o:      setbuf.c
        !           122: ungetc.o:      ungetc.c
        !           123: 
        !           124: # end of /usr/src/libc/stdio/Makefile

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