autoconf macro SANE_CHECK_U_TYPES fails on Tru64 with cc

From: Petter Reinholdtsen (pere@hungry.com)
Date: Wed Jun 06 2001 - 15:51:20 PDT

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    The autoconf macro SANE_CHECK_U_TYPES in sane-backends/acinclude.m4
    fails on Tru64 unix 5.1 when using Compaq C v6.3-28 (ie cc). The
    faulty line uses a compiler flags I've never seen before, and which is
    not recognized by Compaq C:

        [AC_EGREP_HEADER(u_int8_t,netinet/in.h,
           [CPPFLAGS="$CPPFLAGS -isys/bitypes.h"; AC_MSG_RESULT(yes)],
           [AC_MSG_RESULT([no, not even included with netinet/in.h])])])

    The '-isys/bitypes.h' is passed on to the linker, and it refuses to
    use it and fails. I suggest changing macro to set a flag
    (NEED_SYS_BITYPES_H parhaps), and the to include the file in
    sane/config.h when needed. 

    -- 
##>  Petter Reinholdtsen  <##  |  pere@hungry.com

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