Re: Linking Emacs with libxml2

[Andreas Schwab <schwab@linux-m68k.org>]

Lars Magne Ingebrigtsen <larsi@gnus.org> writes:

> +### Use libxml2 (-lxml2) if available
> +HAVE_LIBXML2=no
> +LIBXML2_LIBS=
> +if test -n xml2-config; then

What's the point of this test?

> +  LIBXML2_CFLAGS="`xml2-config --cflags`"
> +  SAVE_CFLAGS="$CFLAGS"
> +  CFLAGS="$LIBXML2_CFLAGS $CFLAGS"
> +  AC_CHECK_HEADER(libxml/xmlversion.h,
> +    [AC_CHECK_LIB(xml2, htmlReadMemory, HAVE_LIBXML2=yes, , -lxml2)])

Please use PKG_CHECK_MODULES.

> +    result = Fcons (Fintern (build_string (node->name),
> +			     Vobarray),

                       intern (node->name)

> +  ibeg = CHAR_TO_BYTE (XFASTINT (Fpoint_min ()));
> +  iend = CHAR_TO_BYTE (XFASTINT (Fpoint_max ()));
> +  move_gap_both (XFASTINT (Fpoint_min ()), ibeg);
> +  while (ibeg < iend) {
> +    *s++ = *(BYTE_POS_ADDR (ibeg));
> +    ibeg++;
> +  }

     Lisp_Object s = make_buffer_string (BEGV, ZV, 0);

> +  doc = htmlReadMemory (string, strlen(string), "", "utf-8", 0);

                           SDATA (s), SBYTES (s)

Note that the internal encoding is utf-8-emacs which is different from
utf-8 in details.

> Or an autoconf one, for that matter.  ./configure finds the stuff it's
> looking for, but I get this warning:
>
> -------
> [larsi@quimbies ~/src/emacs/trunk]$ ./configure  | grep xml
> checking libxml/xmlversion.h usability... yes
> checking libxml/xmlversion.h presence... no
> configure: WARNING: libxml/xmlversion.h: accepted by the compiler, rejected by the preprocessor!
> configure: WARNING: libxml/xmlversion.h: proceeding with the compiler's result
> checking for libxml/xmlversion.h... yes
> checking for htmlReadMemory in -lxml2... yes
> -------
>
> I'm not sure what that means...

Look at config.log.

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
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