this bit of code in configure.in:
  AC_MSG_CHECKING([uint32_t is 32 bits])
  AC_TRY_RUN([...........],
  AC_MSG_RESULT(ok),
  AC_MSG_ERROR([WRONG!  uint32_t not defined correctly.]),
  AC_MSG_ERROR([could not compile program using uint32_t.]))

causes problems when cross-compiling in that it always fails.  the fix is to 
change that last AC_MSG_ERROR() into an AC_MSG_WARN().  if you read the 
autoconf spec, you'll see that the last arg is for cross-compiling, not for 
when the compile fails.

a simple patch by Maksim Melnikau has been posted here:
https://bugs.gentoo.org/attachment.cgi?id=243615

http://www.gnu.org/software/autoconf/manual/autoconf.html#index-AC_005fTRY_005fL
INK_005fFUNC-2135