Re: How to prepare an ISO 9660 CD for booting via GRUB ?

["Thomas Schmitt" <scdbackup@gmx.net>]

Hi,

many thanks for testing xorriso in new
situations. 


> 1) It tries to build even if no iconv is present

The tests in configure.ac resp. acinclude.m4
are too lax, obviously. They aim for finding
out whether one needs -liconv or not. But they
don't assure that iconv() works.
I will have to make experiments with a
non-existing dummy function, as it seems
impossible to disable iconv() on Linux.


> 2) I needed to explicitly add LIBS=-liconv to configure depstite
> configure properly detecting the need of -liconv. In some commands
> actually -liconv was double: one from configure and another from LIBS
> but somewhere it's not propagated properly

This sounds a bit like a bug in autotools.

But in the log you sent, i only find them in
pairs. Obviously one from LIBS= and one from
  dnl GNU iconv has no function iconv() but libiconv() and a macro iconv()
  AC_CHECK_LIB(iconv, libiconv, , )

Are you sure that the lack of -liconv was not
due to libiconv missing initially ?


> 3) A ton of warnings.

The implementation of the isspace() family seems
not to be liked by the compiler. Shrug.

I found legitimate warnings about putting out
uid_t and gid_t by printf formatter "%d".
(Question is whether (int) is a suitable cast
 in this case.)

Then there is the intentional warning that no
MMC system adapter is available for operating
optical drives directly.
  libburn/sg.c:42: warning: unused variable INTENTIONAL_COMPILER_WARNING
  libburn/sg.c:39: warning: unused variable This_libburn_will_not_be_able_to_operate_on_real_CD_drives

This does not hamper the GRUB use case. One will
just need cdrecord for burning the CD, rather
than letting xorriso do:
  xorriso -as cdrecord -v dev=... blank=as_needed my_grub.iso


------------------------------------------------

So mainly the LIBS=-liconv remains as build
obstacle.

I have changed the iconv detection code in
configure.ac meanwhile (to care for the "const"
ambiguity on FreeBSD). A new tarball
  http://www.gnu.org/software/xorriso/xorriso-0.5.3.tar.gz
is uploaded.

  cat xorriso/xorriso_timestamp.h
should say
  #define Xorriso_timestamP "2010.04.10.180103"
or later.

Could you please try it on cygwin without LIBS=
(but libiconv installed) and send me the log of
the failing compile run ?

If nothing else helps then i plan to set
  LIBS="$LIBS -liconv"
in a special cygwin case in acinclude.m4.
(Do you know a reliable test pattern for cygwin ?
 Like *-*-linux* for Linux.)

For now the double -liconv options give me hope
that it could work without that.


Have a nice day :)

Thomas