[Libguestfs] [hivex] OS X, Fedora 17: iconv autotool inconsistency

[Alexander Nelson]

Hello all,

I've been testing hivexml in OS X, and came across an inconsistency in
building.

Some while back, I hit a snag with iconv in OS X, where basically this
would happen when a hive of any sophistication (greater than
hivex/images/small) was processed:

>$ xml/hivexml images/large >test.xml
>dyld: lazy symbol binding failed: Symbol not found: _iconv_open
>  Referenced from: /[snip]/hivex/lib/.libs/libhivex.0.dylib
>  Expected in: flat namespace
>
>dyld: Symbol not found: _iconv_open
>  Referenced from: /[snip]/hivex/lib/.libs/libhivex.0.dylib
>  Expected in: flat namespace
>
>Trace/BPT trap

This is pretty easily resolved in OS X by adding $(LTLIBICONV) to
libhivex_la_LDFLAGS in lib/Makefile.am.

Unfortunately, bringing that same change to Fedora (17) raises this error
in `make`:
>/bin/ld: cannot find -liconv
>collect2: error: ld returned 1 exit status

LIBICONV and LTLIBICONV are both set to '-liconv' in config.log; but there
is no check for how to link in config.log. That is, these lines do not
appear (in part or in whole) in Fedora's config.log:

>checking for iconv... yes
>checking for working iconv... yes
>checking how to link with libiconv... -liconv

The Fedora negative results came from the latest master, 1.3.6.  The OS X
tests were on an effectively an older version of the code [1], but I think
this is an autotools issue in common to both version.

So...any ideas?  I thought this linking error was the kind of thing the
autotools were supposed to catch.

--Alex
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