[Botan-devel] Botan 1.4.7 VC7 probs... halp? :)

Jack Lloyd lloyd at randombit.net
Mon Oct 3 21:18:04 EDT 2005

Hi Rachel,

Apparently, this is what I get for not testing every release on every
compiler. That error is occuring on some code that is new to 1.4.7,
and it's simple code, but I must be hitting some interesting bug in
VC++ with it. I'll make sure to track this down and fix it for 1.4.8,
but in the meantime, you should be able to get this to work by editing
cast128.cpp and editing the function key_schedule (at the end of the
file), like so:

Remove the definition of the ByteReader class, as well as the declarations
"ByteReader x(X), z(Z);" Then add the lines

   #define x(num) get_byte(num%4, X[num/4])
   #define z(num) get_byte(num%4, Z[num/4])

where you removed the previous declarations of x and z. And that
should do the trick.

That error message is awfully strange - that function certainly
exists, and it doesn't look like a namespace issue. I wonder what is
going on with this...


On Mon, Oct 03, 2005 at 05:46:05PM -0700, Rachel Blackman wrote:
> So, I have a situation where I need a cryptography library to work 
> under both Windows and Linux.  Happy day, I stumble across Botan, and 
> this pleases me greatly: it seems to meet all my needs perfectly, and 
> even has a comparatively sane API.  (A sadly rare thing these days.)
> So I download, and unpack, and it compiles fine on Linux (and also on 
> the Mac OS X box I use for most UNIX dev).  But... not quite so much on 
> Windows.  With Visual Studio .NET 2003, I run configure just fine, and 
> it's building along happily, and runs into:
> src\cast128.cpp(131) : error C2326: 'Botan::byte 
> Botan::CAST_128::key_schedule::ByteReader::operator ()(Botan::u32bit)' 
> : function cannot access 'Botan::get_byte'
> ...and NMAKE (unsurprisingly) coughs up a hairball and dies.  What does 
> surprise me is that get_byte has been getting used in a number of other 
> BlockCipher subclasses which compiled just fine before this point in 
> the make routine.
> So, before I crack open too many source files to track down what 
> happened, I thought I'd toss off a note to see if anyone's familiar 
> with this one. :)
> -- 
> Rachel 'Sparks' Blackman -- sysadmin, developer, mad scientist
> "If it is not broken, give me five minutes to redesign it!"
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