Configure autodetects libtomcrypt, but then it adds libtommath to
$LIBS and fails to link subsequent tests if it's unavailable.
| checking for pcre.h... yes
| checking for pcre_compile in -lpcre... no
| checking whether to build with PCRE library... no
| ++ executing failure action
| configure: error: unable to find usable PCRE library
Signed-off-by: Andreas Oberritter <obi@opendreambox.org> Signed-off-by: Ross Burton <ross.burton@intel.com>
