Re: New backend: UMAX 1220P sane'ification take 1

From: Henning Meier-Geinitz (henning@meier-geinitz.de)
Date: Tue May 01 2001 - 12:06:54 PDT

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    Hi,

    On Tue, May 01, 2001 at 02:03:55PM +0200, stef wrote:
    > A fixed version of the UMAX 1220P backend is available at :
    > ftp://umax1220p.sourceforge.net/pub/umax1220p/umax1220p-1.9.gz

    Sorry, I have found some more problems :-}:

    tools/Makefile.in: it's umax_pp_low.o not umax-low.lo
    umax_pp_low.c: On several occasions something is printed even if the
                   debug level is 0 (or not set). Use DBG(0, ...) only if
                   you are sure that you already detected a scanner that is
                   supported by your backend. Otherwise use level 1 or higher.

    Compilation on Linux works now, there is one warning about
    parport_name not used in umax_pp_low left (I don't have the necessary
    lib/header file for ppdev).

    Linking on Irix results in:

    gmake[1]: Entering directory /tmp/sane/sane-backends/tools'
    cc -o umax_pp umax_pp.o ../backend/umax_pp_low.lo ../sanei/libsanei.a ../lib/liblib.a -lm
    ld: WARNING 84: /usr/lib/libm.so is not used for resolving any symbol.
    ld: ERROR 33: Unresolved text symbol "inb" -- 1st referenced by ../backend/umax_pp_low.lo.
    ld: ERROR 33: Unresolved text symbol "outb" -- 1st referenced by ../backend/umax_pp_low.lo.
    ld: ERROR 33: Unresolved text symbol "insb" -- 1st referenced by ../backend/umax_pp_low.lo.
    ld: ERROR 33: Unresolved text symbol "outsb" -- 1st referenced by ../backend/umax_pp_low.lo.
    ld: ERROR 33: Unresolved text symbol "insl" -- 1st referenced by ../backend/umax_pp_low.lo.
    ld: ERROR 33: Unresolved text symbol "outsw" -- 1st referenced by ../backend/umax_pp_low.lo.
    ld: INFO 152: Output file removed because of error.
    gmake[1]: *** [umax_pp] Error 1

    With AIX similar errors occur.

    All these commands aren't defined for most platforms. SGI machines
    maybe don't even have "ports". You must check if these commands are
    available. Look at sanei/sanei_ab306.c or other parport backends for
    how to do that.

    Irix warnings when compiling (irix cc)
    cfe: Warning 709: umax_pp.c, line 866: Incompatible pointer type assignment
                  free (devlist[0].sane.name);
            ---------------------------^
    cfe: Warning 709: umax_pp.c, line 880: Incompatible pointer type assignment
                  free (devlist[0].sane.model);
            ---------------------------^
    cfe: Warning 709: umax_pp.c, line 894: Incompatible pointer type assignment
                  free (devlist[0].sane.vendor);
            ---------------------------^
    cfe: Warning 709: umax_pp.c, line 925: Incompatible pointer type assignment
                  free (devlist[i].sane.name);
            ---------------------------^
    cfe: Warning 709: umax_pp.c, line 926: Incompatible pointer type assignment
                  free (devlist[i].sane.model);
            ---------------------------^
    cfe: Warning 709: umax_pp.c, line 927: Incompatible pointer type assignment
                  free (devlist[i].sane.vendor);
            ---------------------------^
                            

    Here are the warnings from AIX (gcc):
    umax_pp_low.c: In function sanei_umax_pp_InitPort':
    umax_pp_low.c:389: warning: implicit declaration of function inb'
    umax_pp_low.c:398: warning: implicit declaration of function outb'
    umax_pp_low.c:354: warning: unused variable parport_name'
    umax_pp_low.c:353: warning: unused variable mode'
    umax_pp_low.c: In function Insb':
    umax_pp_low.c:535: warning: implicit declaration of function insb'
    umax_pp_low.c: In function Outsb':
    umax_pp_low.c:541: warning: implicit declaration of function outsb'
    umax_pp_low.c: In function Insw':
    umax_pp_low.c:550: warning: implicit declaration of function insl'
    umax_pp_low.c: In function Outsw':
    umax_pp_low.c:556: warning: implicit declaration of function outsw'
    umax_pp_low.c: At top level:
    umax_pp_low.c:7623: warning: no previous prototype for sanei_umax_pp_gamma' 

    ---
umax_pp.c: In function sane_umax_pp_init':
umax_pp.c:626: warning: cast discards qualifiers from pointer target type
umax_pp.c:645: warning: cast discards qualifiers from pointer target type
umax_pp.c:845: warning: cast discards qualifiers from pointer target type
umax_pp.c:859: warning: cast discards qualifiers from pointer target type
umax_pp.c:866: warning: passing arg 1 of free' discards qualifiers from pointer target type
umax_pp.c:873: warning: cast discards qualifiers from pointer target type
umax_pp.c:880: warning: passing arg 1 of free' discards qualifiers from pointer target type
umax_pp.c:887: warning: cast discards qualifiers from pointer target type
umax_pp.c:894: warning: passing arg 1 of free' discards qualifiers from pointer target type
umax_pp.c: In function sane_umax_pp_exit':
umax_pp.c:925: warning: passing arg 1 of free' discards qualifiers from pointer target type
umax_pp.c:926: warning: passing arg 1 of free' discards qualifiers from pointer target type
umax_pp.c:927: warning: passing arg 1 of free' discards qualifiers from pointer target type

    Another thing:
Can yout backend freeze if no scanner is detected or a "wrong" scanner
is at the parport? Or can it confuse other parport scanners so that
they are not detected by their backend? If this is the case, better
comment out umax_pp in dll.conf and tell the user in the manpage to
enable it.

    Bye,
  Henning

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