Libguestfs - Sep 2011 - [PATCH 0/3] hivex: Improve OS X support

This patch series improves, but does not complete, OS X support for
hivex.  There are several outstanding issues before hivexml and hivexsh
can run:

* hivexsh uses open_memstream, which doesn't exist in OS X as near as I
can see.  Unfortunately, I'm inexperienced with autoconf, so I'm not
sure how to employ AC_CHECK_FUNCS([open_memstream]) to conditionally add
'sh' to the Makefile.am's SUBDIRS.

* The check for libxml fails, because PKG_CHECK_CONFIG doesn't exist on
OS X.  I think it would be better to use AC_CHECK_FUNCS on some of the
libxml functions, but again, I'm not too hot with autoconf and automake.

* hivexml has the following run-time failure:
dyld: lazy symbol binding failed: Symbol not found: _iconv_open
Referenced from: /Users/alex/local/src/hivex/lib/.libs/libhivex.0.dylib
Expected in: flat namespace

dyld: Symbol not found: _iconv_open
Referenced from: /Users/alex/local/src/hivex/lib/.libs/libhivex.0.dylib
Expected in: flat namespace

Trace/BPT trap: 5

I have the vague idea of how to address the first two, but not the last.
I would appreciate any help on these.  Gillen, you said earlier this
weekend you had taken a stab at compiling things in OS X.  Did you have
to take these steps, too?

--Alex


Alex Nelson (3):
  Mac OS X: Detect bindtextdomain
  Mac OS X: setlocale function requires locale.h
  Mac OS X: Run glibtoolize in absence of libtoolize

 bootstrap     |    2 +-
 configure.ac  |    3 +++
 sh/hivexsh.c  |    3 +++
 xml/hivexml.c |    3 +++
 4 files changed, 10 insertions(+), 1 deletions(-)

-- 
1.7.4.4

On 09/06/2011 03:52 AM, Alex Nelson wrote:
> This patch series improves, but does not complete, OS X support for
> hivex.  There are several outstanding issues before hivexml and hivexsh
> can run:
> 
> * hivexsh uses open_memstream, which doesn't exist in OS X as near as I
> can see.  Unfortunately, I'm inexperienced with autoconf, so I'm
not
> sure how to employ AC_CHECK_FUNCS([open_memstream]) to conditionally add
> 'sh' to the Makefile.am's SUBDIRS.
> 
> * The check for libxml fails, because PKG_CHECK_CONFIG doesn't exist on
> OS X.  I think it would be better to use AC_CHECK_FUNCS on some of the
> libxml functions, but again, I'm not too hot with autoconf and
automake.
> 
> * hivexml has the following run-time failure:
> dyld: lazy symbol binding failed: Symbol not found: _iconv_open
> Referenced from: /Users/alex/local/src/hivex/lib/.libs/libhivex.0.dylib
> Expected in: flat namespace
> 
> dyld: Symbol not found: _iconv_open
> Referenced from: /Users/alex/local/src/hivex/lib/.libs/libhivex.0.dylib
> Expected in: flat namespace
> 
> Trace/BPT trap: 5
> 
> I have the vague idea of how to address the first two, but not the last.
> I would appreciate any help on these.  Gillen, you said earlier this
> weekend you had taken a stab at compiling things in OS X.  Did you have
> to take these steps, too?
> 
> --Alex
> 
> 
> Alex Nelson (3):
>   Mac OS X: Detect bindtextdomain
>   Mac OS X: setlocale function requires locale.h
>   Mac OS X: Run glibtoolize in absence of libtoolize
> 
>  bootstrap     |    2 +-
>  configure.ac  |    3 +++
>  sh/hivexsh.c  |    3 +++
>  xml/hivexml.c |    3 +++
>  4 files changed, 10 insertions(+), 1 deletions(-)
> 
I was only interested in the lib itself, so I can't speak for the tools.

I can confirm that libxml2 is not found due to the lack of pkg-config.

Additionally, as explained in my last mail, I had to patch
lib/byte_conversions.h as shown below.

About your "Symbol not found: _iconv_open" problem, this hit to me too
when I linked against hivex. It's due to a missing -liconv on platforms
where this is needed.

-- 
Unix _IS_ user friendly - it's just
selective about who its friends are!

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On Mon, Sep 05, 2011 at 06:52:43PM -0700, Alex Nelson
wrote:
> This patch series improves, but does not complete, OS X support for
> hivex.  There are several outstanding issues before hivexml and hivexsh
> can run:
> 
> * hivexsh uses open_memstream, which doesn't exist in OS X as near as I
> can see.  Unfortunately, I'm inexperienced with autoconf, so I'm
not
> sure how to employ AC_CHECK_FUNCS([open_memstream]) to conditionally add
> 'sh' to the Makefile.am's SUBDIRS.
You need to use an automake conditional.  It'll be something like this
(not tested):

  AM_CONDITIONAL([HAVE_HIVESH],[test "x$HAVE_OPEN_MEMSTREAM" =
"x1"])

and then in Makefile.am:

  if HAVE_HIVESH
  SUBDIRS += sh
  endif

There are plenty of examples of this in the libguestfs source, eg.
have a look at HAVE_PERL in configure.ac and Makefile.am.
> * The check for libxml fails, because PKG_CHECK_CONFIG doesn't exist on
> OS X.  I think it would be better to use AC_CHECK_FUNCS on some of the
> libxml functions, but again, I'm not too hot with autoconf and
automake.
Grumble.  OS X sounds a bit broken if it doesn't include pkg-config
files (*.pc).  Is libxml2 provided in the base OS X or is this coming
from an outside project like MacPorts?
> * hivexml has the following run-time failure:
> dyld: lazy symbol binding failed: Symbol not found: _iconv_open
> Referenced from: /Users/alex/local/src/hivex/lib/.libs/libhivex.0.dylib
> Expected in: flat namespace
> 
> dyld: Symbol not found: _iconv_open
> Referenced from: /Users/alex/local/src/hivex/lib/.libs/libhivex.0.dylib
> Expected in: flat namespace
> 
> Trace/BPT trap: 5
Missing libiconv on OS X??  I don't really know about this one.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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